Browsing by Author "H.D. Yang"

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Effect of Sr-doping on multiferroic properties of Bi 0.8La 0.2Fe 0.9Mn 0.1O 3
(2012) Anup K. Ghosh; H. Kevin; B. Chatterjee; G.D. Dwivedi; A. Barman; H.D. Yang; S. Chatterjee
The effect of Sr-doping on ferroelectricity and ferromagnetism at room temperature has been studied for Bi 0.8La 0.2Fe 0.9Mn 0.1O 3 ceramic system. X-ray diffraction shows that a structural phase transition occurs from rhombohedral structure of BiFeO 3 (space group R3c) to orthorhombic structure of Bi 0.8La 0.2FeO 3 (space group C222). Substitutions of Sr-ions in Bi-site and Mn-ions in Fe-site do not induce any further structural change. Moreover, doping of Sr-ions plays a crucial role to obtain single phased samples. DTA and TGA studies show that both the magnetic transition temperature ( TM) and the ferroelectric transition temperature ( TC) decrease for Bi 0.7Sr 0.1La 0.2Fe 0.9Mn 0.1O 3. Sr-doping enhances the ferroelectric property by increasing the electric polarization. MH measurement shows that Sr-ions partially destroy the spin cycloidal structure in it giving rise to weak ferromagnetism (nonlinearity) at room temperature. © 2011 Elsevier Ltd. All rights reserved.
Enhancement of ferromagnetic and ferroelectric properties in codoped biFeO3
(Chemical Publishing Co., 2011) B. Chatterjee; H. Kevin; G.D. Dwivedi; H.D. Yang; S. Chatterjee; A.K. Ghosh
Co-doped insulating Bi0.8La0.2Fe 1-xMnxO3, (x = 0, 0.1) ceramics were prepared by conventional solid state reaction method. The XRD study shows that 20 % substitution of La ions changes the structure from rhombohedral (space group R3c) that of BaFeO3 to the orthorhombic (C222) for Bi0.8La 0.2FeO3 (BLFO). For further substitution of Mn-ions in Fe-site no structural change occurs. From DTA and TGA study, it is observed that magnetic transition temperature (Tm) decreases appreciably whereas ferroelectric transition temperature (TC) does not affect much with the increase of Mn-concentration. The magnetization-magnetic field measurements show that increase of magnetization for co-doping of La and Mn in Bi 0.8FeO3 is due to the destruction of the spin cycloid structure in it and the introduction of the mixed valance state. P-E measurement shows the ferroelectric nature of the sample.
Existence of the multiferroic property at room temperature in Ti doped CoFe 2O 4
(2012) G.D. Dwivedi; Amish G. Joshi; H. Kevin; P. Shahi; A. Kumar; A.K. Ghosh; H.D. Yang; Sandip Chatterjee
The appearance of ferroelectricity has been observed in magnetically ordered Co(Fe 1-xTi x) 2O 4 at room temperature. Magnetization and dielectric constant is found to increase with Ti doping. It is observed from an X-ray Photoemission Spectroscopy study that Ti goes to the octahedral site with (4) ionic state. An MH hysteresis curve at room temperature shows the ferrimagnetic ordering and a PE loop at room temperature clearly indicates the existence of ferroelectricity. © 2011 Elsevier Ltd. All rights reserved.
Global consortium for the classification of fungi and fungus-like taxa
(Zhongkai University, 2023) K.D. Hyde; M.A. Abdel-Wahab; J. Abdollahzadeh; P.D. Abeywickrama; S. Absalan; N. Afshari; A.M. Ainsworth; O.Y. Akulov; V.V. Aleoshin; A.M. Al-Sadi; P. Alvarado; A. Alves; G. Alves-Silva; M. Amalfi; Y. Amira; T.B. Amuhenage; J.L. Anderson; V. Antonín; S. Aouali; A. Aptroot; C.C.S. Apurillo; J.P.M. Araújo; H.A. Ariyawansa; A. Armand; E. Arumugam; R. Asghari; D.M.A. Assis; V. Atienza; S. Avasthi; E. Azevedo; A.H. Bahkali; M. Bakhshi; Z. Banihashemi; D.F. Bao; H.O. Baral; M. Barata; F.R. Barbosa; R.N. Barbosa; R.W. Barreto; C. Baschien; D.B. Belamesiatseva; M. Bennett Reuel; I. Bera; J.D.P. Bezerra; J.L. Bezerra; D.J. Bhat; C.S. Bhunjun; M.V. Bianchinotti; J. Błaszkowski; A. Blondelle; T. Boekhout; G. Bonito; S. Boonmee; N. Boonyuen; C. Bregant; P. Buchanan; D. Bundhun; G. Burgaud; T. Burgess; B. Buyck; M. Cabarroi-Hernández; M.E.S. Cáceres; M.F. Caeiro; L. Cai; M.F. Cai; M.S. Calabon; F.J.S. Calaça; M. Callalli; M.P.S. Camara; J.F. Cano-Lira; T. Cantillo; B. Cao; J.R. Carlavilla; A. Carvalho; R.F. Castañeda-Ruiz; L. Castlebury; O. Castro-Jauregui; M.D.V. Catania; L.H. Cavalcanti; J. Cazabonne; M.L. Cedeño-Sanchez; S. Chaharmiri-Dokhaharani; N. Chaiwan; N. Chakraborty; P. Chaverri; R. Cheewangkoon; C. Chen; C.Y. Chen; K.H. Chen; J. Chen; Q. Chen; W.H. Chen; Y.P. Chen; K.W.T. Chethana; C. Coleine; T.O. Condé; M.A. Corazon-Guivin; A. Cortés-Pérez; D.H. Costa-Rezende; R. Courtecuisse; J.A. Crouch; P.W. Crous; B.K. Cui; Y.Y. Cui; D.K.A. da Silva; G.A. da Silva; I.R. da Silva; R.M.F. da Silva; A.C. da Silva Santos; D.Q. Dai; Y.C. Dai; U. Damm; V. Darmostuk; Daroodi Zoha; K. Das; K. Das; N. Davoodian; E.A. Davydov; M.C. Dayarathne; C. Decock; M.D. de Groot; A. De Kesel; T.E.E. de la Cruz; R. De Lange; G. Delgado; C.M. Denchev; T.T. Denchev; N.T. de Oliveira; N.I. de Silva; F.A. de Souza; B. Dentinger; B. Devadatha; J.C. Dianese; B. Dima; A.G. Diniz; A.J. Dissanayake; L.S. Dissanayake; H.H. Doğan; M. Doilom; S. Dolatabadi; W. Dong; Z.Y. Dong; L.A. Dos Santos; E.R. Drechsler-Santos; T.Y. Du; M.K. Dubey; A.K. Dutta; E. Egidi; T.F. Elliott; M.S. Elshahed; M. Erdoğdu; D. Ertz; J. Etayo; H.C. Evans; X.L. Fan; Y.G. Fan; A.G. Fedosova; J. Fell; I. Fernandes; A.L. Firmino; P.O. Fiuza; A. Flakus; C. A. Fragoso de Souza; J.C. Frisvad; S.C. Fryar; T. Gabaldón; A.J. Gajanayake; L.J. Galindo; P.B. Gannibal; D. García; S.R. García-Sandoval; I. Garrido-Benavent; L. Garzoli; A.K. Gautam; Z.-W. Ge; D.J. Gené; E. Gentekaki; M. Ghobad-Nejhad; A.J. Giachini; T.B. Gibertoni; A. Góes-Neto; D. Gomdola; A. R. Gomes de Farias; S.P. Gorjón; B.T. Goto; M.M. Granados-Montero; G.W. Griffith; J.Z. Groenewald; M. Groenewald; H.P. Grossart; C. Gueidan; A. Gunarathne; S. Gunaseelan; L.F.P. Gusmão; A.C. Gutierrez; L. Guzmán-Dávalos; D. Haelewaters; R. Halling; Y.F. Han; K.K. Hapuarachchi; C.B. Harder; T.C. Harrington; T. Hattori; M.Q. He; S. He; S.H. He; R. Healy; M. Herández-Restrepo; G. Heredia; K.T. Hodge; M. Holgado-Rojas; S. Hongsanan; E. Horak; T. Hosoya; J. Houbraken; S.K. Huang; N. Huanraluek; J.S. Hur; V.G. Hurdeal; V.P. Hustad; M. Iotti; T. Iturriaga; E. Jafar; P. Janik; J.L. Jany; R.G.U. Jayalal; S.C. Jayasiri; R.S. Jayawardena; R. Jeewon; G.H. Jerônimo; A.L. Jesus; J. Jin; P.R. Johnston; E.B.G. Jones; Y. Joshi; A. Justo; P. Kaishian; M. Kakishima; M. Kaliyaperumal; G.P. Kang; J.C. Kang; J.M. Karakehian; O. Karimi; S.A. Karpov; S.C. Karunarathna; M. Kaufmann; M. Kemler; K. Kezo; S. Khyaju; M. Kirchmair; P.M. Kirk; M.J. Kitaura; I. Klawonn; M. Kolarik; A. Kong; F. Kuhar; M. Kukwa; S. Kumar; I. Kušan; C. Lado; K.H. Larsson; K.P.D. Latha; H.B. Lee; M. Leonardi; D.L. Leontyev; A.S. Lestari; C.J.Y. Li; D.W. Li; H. Li; H.Y. Li; L. Li; Q.R. Li; Q. Li; W.L. Li; Y. Li; Y.C. Li; Y.X. Li; C.F. Liao; K. Liimatainen; Y.W. Lim; C.G. Lin; B.T. Linaldeddu; C.C. Linde; M.M. Linn; F. Liu; J.K. Liu; N.G. Liu; S. Liu; S.L. Liu; X.F. Liu; X.Y. Liu; X.Z. Liu; Z.B. Liu; L. Lu; Y.Z. Lu; T. Luangharn; J.J. Luangsa-ard; H.T. Lumbsch; S. Lumyong; L. Luo; M. Luo; Z.L. Luo; J. Ma; A.R. Machado; A.D. Madagammana; H. Madrid; F. Magurno; D. Magyar; N. Mahadevan; S.S.N. Maharachchikumbura; Y. Maimaiti; E. Malosso; D.S. Manamgoda; I.S. Manawasinghe; A. Mapook; D.S. Marasinghe; M. Mardones; Y. Marin-Felix; R. Márquez; H. Masigol; N. Matočec; T.W. May; E.H.C. McKenzie; A. Meiras-Ottoni; R.F.R. Melo; R.L. Mendes-Alvarenga; S. Mendieta; Q.F. Meng; A. Menkis; N. Menolli; A. Mešić; J. G. Meza Calvo; K.V. Mikhailov; S.L. Miller; B. Moncada; J.M. Moncalvo; J.S. Monteiro; M. Monteiro; H.M. Mora-Montes; P.A. Moreau; G.M. Mueller; S. Mukhopadyay; R. Murugadoss; L.G. Nagy; M. Najafiniya; C.M. Nanayakkara; C.C. Nascimento; Y. Nei; M.A. Neves; S. Neuhauser; A.G.T. Niego; R.H. Nilsson; T. Niskanen; N. Niveiro; M.T. Noorabadi; M.E. Noordeloos; C. Norphanphoun; N. B. Nuñez Otaño; R.P. O’Donnell; F. Oehl; I. Olariaga; O.P. Orlando; K.L. Pang; V. Papp; J. Pawłowska; U. Peintner; D. Pem; O.L. Pereira; R.H. Perera; J. Perez-Moreno; S. Perez-Ortega; G. Péter; A.J.L. Phillips; M. Phonemany; C. Phukhamsakda; K. Phutthacharoen; M. Piepenbring; C.L.A. Pires-Zottarelli; G. Poinar; A. Pošta; M. Prieto; I. Promputtha; C.A. Quandt; R. Radek; K. Rahnama; K.N.A. Raj; K.C. Rajeshkumar; T. Rämä; G. Rambold; V. Ramírez-Cruz; S. Rasconi; A.R. Rathnayaka; M. Raza; G.C. Ren; G.L. Robledo; P. Rodriguez-Flakus; A. Ronikier; W. Rossi; M. Ryberg; L.R. Ryvarden; C.A. Salvador-Montoya; B. Samant; B.C. Samarakoon; M.C. Samarakoon; I. Sánchez-Castro; M. Sánchez-García; M. Sandoval-Denis; B. Santamaria; A.L.C.M.A. Santiago; V.V. Sarma; A. Savchenko; K. Savchenko; R.K. Saxena; M. Scholler; N. Schoutteten; E. Seifollahi; L. Selbmann; F. Selcuk; I.C. Senanayake; T.G. Shabashova; H.W. Shen; Y.M. Shen; A.G.S. Silva-Filho; D.R. Simmons; R. Singh; E.B. Sir; C.G. Song; C.M. Souza-Motta; O.P. Sruthi; M. Stadler; A.M. Stchigel; J. Stemler; S.L. Stephenson; J.F.H. Strassert; H.L. Su; L. Su; S. Suetrong; B. Sulistyo; Y.F. Sun; Y.R. Sun; S. Svantesson; P. Sysouphanthong; S. Takamatsu; T.H. Tan; K. Tanaka; A.M.C. Tang; X. Tang; J.B. Tanney; N.M. Tavakol; J.E. Taylor; P.W.J. Taylor; L. Tedersoo; D.S. Tennakoon; G.K. Thamodini; M. Thines; V. Thiyagaraja; N. Thongklang; P.V. Tiago; Q. Tian; W.H. Tian; L. Tibell; S. Tibell; S. Tibpromma; Z. Tkalčec; M. Tomšovský; M. Toome-Heller; G. Torruella; A. Tsurykau; D. Udayanga; M. Ulukapi; W.A. Untereiner; B.A. Uzunov; L.G. Valle; W. Van Caenegem; S. Van den Wyngaert; N. Van Vooren; P. Velez; R.K. Verma; L.C. Vieira; W.A.S. Vieira; A. Vizzini; A. Walker; A.K. Walker; D.N. Wanasinghe; C.G. Wang; K. Wang; S.X. Wang; X.Y. Wang; Y. Wang; N. Wannasawang; F. Wartchow; D.P. Wei; X.L. Wei; J.F. White; N.N. Wijayawardene; S.N. Wijesinghe; D.S.A. Wijesundara; K. Wisitrassameewong; F.R. Worthy; F. Wu; G. Wu; H.X. Wu; N. Wu; W.P. Wu; C. Wurzbacher; Y.P. Xiao; Y.R. Xiong; B. Xu; L.J. Xu; R. Xu; R.F. Xu; R.J. Xu; T.M. Xu; L. Yakovchenko; J.Y. Yan; H.D. Yang; J. Yang; Z.L. Yang; Y.H. Yang; N. Yapa; E. Yasanthika; N.H. Youssef; F.M. Yu; Q. Yu; X.D. Yu; Y.X. Yu; Z.F. Yu; H.S. Yuan; Y. Yuan; A. Yurkov; D. Zafari; J.C. Zamora; R. Zare; M. Zeng; N.K. Zeng; X.Y. Zeng; F. Zhang; H. Zhang; J.F. Zhang; J.Y. Zhang; Q.Y. Zhang; S.N. Zhang; W. Zhang; Y. Zhang; Y.X. Zhang; C.L. Zhao; H. Zhao; Q. Zhao; R.L. Zhao; L.W. Zhou; M. Zhou; M.P. Zhurbenko; H.H. Zin; L. Zucconi
The Global Consortium for the Classification of Fungi and fungus-like taxa is an international initiative of more than 550 mycologists to develop an electronic structure for the classification of these organisms. The members of the Consortium originate from 55 countries/regions worldwide, from a wide range of disciplines, and include senior, mid-career and early-career mycologists and plant pathologists. The Consortium will publish a biannual update of the Outline of Fungi and fungus like taxa, to act as an international scheme for other scientists. Notes on all newly published taxa at or above the level of species will be prepared and published online on the Outline of Fungi website (https://www.outlineoffungi.org/), and these will be finally published in the biannual edition of the Outline of Fungi and fungus-like taxa. Comments on recent important taxonomic opinions on controversial topics will be included in the biannual outline. For example, ‘to promote a more stable taxonomy in Fusarium given the divergences over its generic delimitation’, or ‘are there too many genera in the Boletales?’ and even more importantly, ‘what should be done with the tremendously diverse ‘dark fungal taxa?’ There are undeniable differences in mycologists’ perceptions and opinions regarding species classification as well as the establishment of new species. Given the pluralistic nature of fungal taxonomy and its implications for species concepts and the nature of species, this consortium aims to provide a platform to better refine and stabilise fungal classification, taking into consideration views from different parties. In the future, a confidential voting system will be set up to gauge the opinions of all mycologists in the Consortium on important topics. The results of such surveys will be presented to the International Commission on the Taxonomy of Fungi (ICTF) and the Nomenclature Committee for Fungi (NCF) with opinions and percentages of votes for and against. Criticisms based on scientific evidence with regards to nomenclature, classifications, and taxonomic concepts will be welcomed, and any recommendations on specific taxonomic issues will also be encouraged; however, we will encourage professionally and ethically responsible criticisms of others’ work. This biannual ongoing project will provide an outlet for advances in various topics of fungal classification, nomenclature, and taxonomic concepts and lead to a community-agreed classification scheme for the fungi and fungus-like taxa. Interested parties should contact the lead author if they would like to be involved in future outlines. © (2023), (Zhongkai University). All Rights Reserved.
Interplay of spin, phonon, and lattice degrees in a hole-doped double perovskite: Observation of spin-phonon coupling and magnetostriction effect
(American Institute of Physics Inc., 2022) Arkadeb Pal; Khyati Anand; Neha Patel; Amitabh Das; Surajit Ghosh; Peter Tsung-Wen Yen; Shin-Ming Huang; R.K. Singh; H.D. Yang; A.K. Ghosh; Sandip Chatterjee
Unlike a typical spin-phonon coupling, an exhibition of unconventional spin-phonon coupling, which is mediated via magnetostriction effect, is reported in a hole-doped double perovskite Pr1.5Sr0.5CoMnO6. Various investigations including electronic and crystal structures, spin structure, transport property, lattice dynamics, and theoretical density of states analysis by density-functional theory (DFT) have been performed. A substantial increase in the mean oxidation states of Co ions and a concurrent abrupt decrease in the resistivity upon Sr doping is observed, thus altering its underlying transport mechanism. An insulating and ferromagnetic (FM) ground state is predicted by DFT calculations. The neutron diffraction data analysis reveals a complex crystal structure of Pr1.5Sr0.5CoMnO6, which consists of B-site disordered monoclinic (P21/n) and orthorhombic (Pnma) structures, highlighting the presence of an anti-site disorder in the system. The analysis also suggests an overall FM ordering of Co/Mn spins below 150 K for the monoclinic phase, whereas no such magnetic ordering is found for the orthorhombic phase. More interestingly, the neutron powder diffraction study perceives the presence of a strong magnetostriction effect in the system. Raman spectroscopy unravels the presence of a spin-phonon coupling, which is essentially mediated by the magnetostriction effect. © 2022 Author(s).
Neutron diffraction study of multiferroic Mo-doped CoFe2O4
(Elsevier, 2015) A. Das; G.D. Dwivedi; Poonam Kumari; P. Shahi; H.D. Yang; A.K. Ghosh; Sandip Chatterjee
Neutron diffraction measurements have been carried out to study the coexistence of magnetic ordering and ferroelectricity at room temperature in CoFe1.8Mo0.2O4. It is observed from this study that the Mo6+ preferentially occupies the octahedral site and it converts some of the Fe3+ ions into Fe2+ ions in the tetrahedral site. The conversion of Fe3+ ions into Fe2+ ions modulate the Fe-Fe distances which in effect induce the ferroelectricity in magnetically ordered CoFe1.8Mo0.2O4. © 2014 Elsevier B.V. All rights reserved.
Observation of structural change-driven Griffiths to non-Griffiths-like phase transformation in Pr2-xSrxCoFeO6 (x = 0 to 1)
(Elsevier B.V., 2022) Arkadeb Pal; Khyati Anand; Dheeraj Kumar; Amish G. Joshi; Peter Tsung-Wen Yen; Shin-Ming Huang; H.D. Yang; A.K. Ghosh; Sandip Chatterjee
The study of crystal structure, electronic structure, transport, and magnetic properties of heterovalent Sr2+ doped Pr2-xSrxCoFeO6 (x = 0.0 to 1.0) system have been done. Crystal structure study reveals an occurrence of structural change from orthorhombic (Pnma) to tetragonal (I4/m) phase above x = 0.6. A sudden transformation of the Griffiths-like to non-Griffiths-like magnetic phase is observed as the system changes its crystal structure from Pnma to I4/m. The X-ray photoemission spectroscopy (XPS) study suggests for the existence of mixed oxidation states of the B-site ions viz., Co3+/Co4+ and Fe3+/Fe4+, and it also indicates an increase in the mean oxidation states owing to the hole substitution (Sr2+). The temperature variation of the electrical resistivity of the studied systems follows two different transport mechanisms, such as the variable range hopping (VRH) (in the lower temperature region) and small polaron hoping (SPH) (in the higher temperature region) models. Dc magnetization study shows that a local competing ferromagnetic (FM) exchange interaction increases with Sr doping. Finally, the ac susceptibility study reveals breaking of the long-range-ordering in the system x = 1.0, which appears to be related to the structural change and enhanced spin frustration due to increased competing local FM exchange interactions. In addition, electronic density of states (DOS) calculations of PrSrCoFeO6 (i.e. x = 1.0) using the density functional theory (DFT) have been performed for various Co/Fe atomic distributions. For most of the Co/Fe atomic distributions studied, the calculations show that the total energy of the system with FM coupling among spins has slightly lower energy than that for antiferromagnetic (AFM) coupling. © 2022
Relaxor-super-paraelectric behaviour and crystal-field-driven spin-phonon coupling in pyrochlore Eu2Ti2O7
(IOP Publishing Ltd, 2022) Mohd Alam; Arkadeb Pal; Khyati Anand; Surajit Ghosh; Saurabh Tripathi; Ranjan K. Singh; A.K. Ghosh; H.D. Yang; Sandip Chatterjee
The temperature-dependent Raman spectroscopy and dielectric property of pyrochlore Eu2Ti2O7 have been investigated. The appearance of additional phonon modes below 200 K is observed suggesting a local structural change. The anomalous softening of the phonon modes and existence of crystal-field-induced short-range magnetic ordering below 150 K unveiled the possible spin-phonon coupling. The signature behaviour of a dipolar glassy-relaxor state and super-paraelectric nature has been demonstrated. Additional dielectric anomaly at lower temperature, below 40 K, related to spin-spin correlation has also been reported. © 2022 EPLA
Role of codoping on multiferroic properties at room temperature in BiFeO3 ceramic
(Elsevier Ltd, 2013) Anup K. Ghosh; G.D. Dwivedi; B. Chatterjee; B. Rana; A. Barman; S. Chatterjee; H.D. Yang
Role of codoping (20% La in Bi-site and 10% Mn in Fe-site) on mutiferroic properties in insulating BiFeO3 ceramic have been investigated. The X-ray diffraction (XRD) with Rietveld refinement shows that the structure of Bi0.8La0.2FeO3 is orthorhombic (Pnma). Furthermore, it shows that on substitution of 10% Mnions in Fe-site, no structural change occurs which has been supported by micro-Raman study. DTA study shows that ferroelectric transition temperature (TC) decreases very fast due with La-doping and slowly with the Mn-doping. Measurement on magnetization vs. applied magnetic field (M-H) shows increase of magnetization due to codoping of La and Mn in BiFeO 3. This may be due to partly destruction or suppression of the spin cycloid structure in it and/or the introduction of the mixed valance state. P-E measurement shows high leakage in Bi0.8La0.2Fe0.9Mn0.1O3. © 2013 Elsevier Ltd. All rights reserved.
Signature of ferroelectricity in magnetically ordered Mo-doped CoFe 2O4
(2010) G.D. Dwivedi; K.F. Tseng; C.L. Chan; P. Shahi; J. Lourembam; B. Chatterjee; A.K. Ghosh; H.D. Yang; Sandip Chatterjee
Coexistence of both magnetic ordering and ferroelectricity (with giant dielectric constant) have been observed for the first time in Co(Fe 1-xMox)2O4. The magnetization of Co(Fe1-xMox)2O4 ranges from 0 to 0.1) was found to increase with doping concentration of Mo. The magnetic properties indicate that Mo goes into the tetrahedral site. The giant dielectric constant may be attributed to the Maxwell-Wagner relaxation mechanism. © 2010 The American Physical Society.
Signature of Griffith phase in (Tb1-xCex)MnO3
(American Institute of Physics Inc., 2016) Abhishek Kumar; G.D. Dwivedi; A. Singh; R. Singh; K.K. Shukla; H.D. Yang; A.K. Ghosh; Sandip Chatterjee
Griffith phase phenomena is attributed to existence of FM (ferromagnetic) cluster in AFM (antiferromagnetic) ordering which usually occurs in ferromagnetic and antiferromagnetic bilayers or multilayers. In (Tb1-xCex)MnO3 evolution of Griffith phase have been observed. The observed Griffith phase might be due to the exchange interaction between Mn3+/Mn2+ states. © 2016 Author(s).
Simultaneous presence of ferroelectricity and magnetism in Mo-doped CoFe2O4
(2010) G.D. Dwivedi; K.F. Tseng; C.L. Chan; P. Shahi; B. Chatterjee; A.K. Ghosh; H.D. Yang; Sandip Chatterjee
Signature of ferroelectricity has been observed for the first time in magnetically ordered Co(Fe1-xMox)2O 4. The structural property of Co(Fe1-xMox) 2O4 (x ranges from 0 to 0.1) indicates that Mo goes into the tetrahedral site. The frequency dependent P-E loop indicates the existence of weak ferroelectricity in Mo-doped CoFe2O4. © 2010 American Institute of Physics.
Structural, magnetic, magneto-transport properties, and electronic structure study of charge-ordered (La0.4Pr0.6)0.65Ca0.35MnO3
(Elsevier Ltd, 2017) G.D. Dwivedi; Satyam Kumar; Amish G. Joshi; Shiv Kumar; A.K. Ghosh; H. Chou; H.D. Yang; Sandip Chatterjee
Structural, magnetic and magneto-transport properties of nanocrystalline (La0.4Pr0.6)0.65Ca0.35MnO3have been investigated along with their electronic structures. Temperature dependent magnetization measurement shows different magnetic phases in different temperature regions. (La0.4Pr0.6)0.65Ca0.35MnO3completely transforms into a ferromagnet below 50 K. The temperature dependent resistivity measurement of (La0.4Pr0.6)0.65Ca0.35MnO3system displays semiconducting behavior up to 45 K under zero magnetic field. Application of 1 T magnetic field enforces semiconductor to metal transition around 65 K during cooling and around 115 K during warming. This shows that (La0.4Pr0.6)0.65Ca0.35MnO3still behaves as itinerant ferromagnet under applied magnetic field. X-ray photoemission spectra of Mn2p and Mn3s core-level confirm dual valence states of Mn (Mn3+and Mn4+), which is responsible for the magnetic behavior of the (La0.4Pr0.6)0.65Ca0.35MnO3system. High-resolution ultraviolet photoemission spectra near Fermi-edge confirms the presence of finite electronic states at Fermi-level, which explains the observed low-temperature metallic behavior of the (La0.4Pr0.6)0.65Ca0.35MnO3system. © 2016
Structural, transport and optical properties of (La0.6Pr0.4)0.65Ca0.35MnO3 nanocrystals: A wide band-gap magnetic semiconductor
(Royal Society of Chemistry, 2015) Satyam Kumar; G.D. Dwivedi; Shiv Kumar; R.B. Mathur; U. Saxena; A.K. Ghosh; Amish G. Joshi; H.D. Yang; Sandip Chatterjee
(La0.6Pr0.4)0.65Ca0.35MnO3 system has been synthesized via a sol-gel route at different sintering temperatures. Structural, transport and optical measurements have been carried out to investigate (La0.6Pr0.4)0.65Ca0.35MnO3 nanoparticles. Raman spectra show that Jahn-Teller distortion has been decreased due to the presence of Ca and Pr in A-site. Magnetic measurements provide a Curie temperature around 200 K and saturation magnetization (MS) of about 3.43μB/Mn at 5 K. X-ray photoemission spectroscopy study suggests that Mn exists in a dual oxidation state (Mn3+ and Mn4+). Resistivity measurements suggest that charge-ordered states of Mn3+ and Mn4+, which might be influenced by the presence of Pr, have enhanced insulating behavior in (La0.6Pr0.4)0.65Ca0.35MnO3. Band gap estimated from UV-Vis spectroscopy measurements comes in the range of wide band gap semiconductors (∼3.5 eV); this makes (La0.6Pr0.4)0.65Ca0.35MnO3 a potential candidate for device application. This journal is © The Royal Society of Chemistry 2015.
The 2024 Outline of Fungi and fungus-like taxa
(Zhongkai University, 2024) K.D. Hyde; M.T. Noorabadi; V. Thiyagaraja; M.Q. He; P.R. Johnston; S.N. Wijesinghe; A. Armand; A.Y. Biketova; K.W.T. Chethana; M. Erdoğdu; Z.W. Ge; J.Z. Groenewald; S. Hongsanan; I. Kušan; D.V. Leontyev; D.W. Li; C.G. Lin; N.G. Liu; S.S.N. Maharachchikumbura; N. Matočec; T.W. May; E.H.C. McKenzie; A. Mešić; R.H. Perera; C. Phukhamsakda; M. Piątek; M.C. Samarakoon; F. Selcuk; I.C. Senanayake; J.B. Tanney; Q. Tian; A. Vizzini; D.N. Wanasinghe; N. Wannasawang; N.N. Wijayawardene; R.L. Zhao; M.A. Abdel-Wahab; J. Abdollahzadeh; P.D. Abeywickrama; S. Absalan; K. Acharya; N. Afshari; N.S. Afshan; S. Afzalinia; S.A. Ahmadpour; O. Akulov; A. Alizadeh; M. Alizadeh; A.M. Al-Sadi; A. Alves; V.C.S. Alves; G. Alves-Silva; V. Antonín; S. Aouali; A. Aptroot; C.C.S. Apurillo; R.M. Arias; B. Asgari; R. Asghari; D.M.A. Assis; B. Assyov; V. Atienza; H.D.R. Aumentado; S. Avasthi; E. Azevedo; M. Bakhshi; D.F. Bao; H.O. Baral; M. Barata; K.D. Barbosa; R.N. Barbosa; F.R. Barbosa; R. Baroncelli; G.G. Barreto; C. Baschien; R.M. Bennett; I. Bera; J.D.P. Bezerra; C.S. Bhunjun; M.V. Bianchinotti; J. Błaszkowski; T. Boekhout; G.M. Bonito; S. Boonmee; N. Boonyuen; F.M. Bortnikov; C. Bregant; D. Bundhun; G. Burgaud; B. Buyck; M.F. Caeiro; M. Cabarroi-Hernández; Cai M Feng; L. Cai; M.S. Calabon; F.J.S. Calaça; M. Callalli; M.P.S. Câmara; J. Cano-Lira; B. Cao; J.R. Carlavilla; A. Carvalho; T.G. Carvalho; R.F. Castañeda-Ruiz; M.D.V. Catania; J. Cazabonne; M. Cedeño-Sanchez; S. Chaharmiri-Dokhaharani; N. Chaiwan; N. Chakraborty; R. Cheewankoon; C. Chen; J. Chen; Q. Chen; Y.P. Chen; S. Chinaglia; C.C. Coelho-Nascimento; C. Coleine; D.H. Costa-Rezende; A. Cortés-Pérez; J.A. Crouch; P.W. Crous; R.H.S.F. Cruz; P. Czachura; U. Damm; V. Darmostuk; Z. Daroodi; K. Das; K. Das; N. Davoodian; E.A. Davydov; G.A. daSilva; I.R. daSilva; R.M.F. daSilva; A.C. daSilvaSantos; D.Q. Dai; Y.C. Dai; D. deGrootMichiel; A. DeKesel; R. DeLange; E.V. deMedeiros; C.F.A. deSouza; F.A. deSouza; T.E.E. delaCruz; C. Decock; G. Delgado; C.M. Denchev; T.T. Denchev; Y.L. Deng; B.T.M. Dentinger; B. Devadatha; J.C. Dianese; B. Dima; M. Doilom; A.J. Dissanayake; L.S. Dissanayake; A.G. Diniz; S. Dolatabadi; J.H. Dong; W. Dong; Z.Y. Dong; E.R. Drechsler-Santos; I.S. Druzhinina; T.Y. Du; M.K. Dubey; A.K. Dutta; T.F. Elliott; M.S. Elshahed; E. Egidi; P. Eisvand; L. Fan; X. Fan; X.L. Fan; A.G. Fedosova; L.O. Ferro; P.O. Fiuza; A. Flakus; E.O. Fonseca; S.C. Fryar; T. Gabaldón; A.J. Gajanayake; P.B. Gannibal; F. Gao; D. García-Sánchez; R. García-Sandoval; I. Garrido-Benavent; L. Garzoli; J. Gasca-Pineda; A.K. Gautam; J. Gené; M. Ghobad-Nejhad; A. Ghosh; A.J. Giachini; T.B. Gibertoni; E. Gentekaki; V.I. Gmoshinskiy; A. Góes-Neto; D. Gomdola; S.P. Gorjón; B.T. Goto; M.M. Granados-Montero; G.W. Griffith; M. Groenewald; H.-P. Grossart; Z.R. Gu; C. Gueidan; A. Gunarathne; S. Gunaseelan; S.L. Guo; L.F.P. Gusmão; A.C. Gutierrez; L. Guzmán-Dávalos; D. Haelewaters; H. Haituk; R.E. Halling; S.C. He; G. Heredia; M. Hernández-Restrepo; T. Hosoya; S.D. Hoog; E. Horak; C.L. Hou; J. Houbraken; Z.H. Htet; S.K. Huang; W.J. Huang; V.G. Hurdeal; V.P. Hustad; C.A. Inácio; P. Janik; R.G.U. Jayalal; S.C. Jayasiri; R.S. Jayawardena; R. Jeewon; G.H. Jerônimo; J. Jin; E.B.G. Jones; Y. Joshi; Ž. Jurjević; A. Justo; M. Kakishima; M. Kaliyaperumal; G.P. Kang; J.C. Kang; O. Karimi; S.C. Karunarathna; S.A. Karpov; K. Kezo; A.N. Khalid; M.K. Khan; S. Khuna; S. Khyaju; M. Kirchmair; I. Klawonn; N. Kraisitudomsook; M. Kukwa; N.D. Kularathnage; S. Kumar; M.A. Lachance; C. Lado; K.P.D. Latha; H.B. Lee; M. Leonardi; A.S. Lestari; C. Li; H. Li; J. Li; Q. Li; Y. Li; Y.C. Li; Y.X. Li; C.F. Liao; J.L.R. Lima; J.M.S. Lima; N.B. Lima; L. Lin; B.T. Linaldeddu; M.M. Linn; F. Liu; J.K. Liu; J.W. Liu; S. Liu; S.L. Liu; X.F. Liu; X.Y. Liu; J.E. Longcore; T. Luangharn; J.J. Luangsa-ard; L. Lu; Y.Z. Lu; H.T. Lumbsch; L. Luo; M. Luo; Z.L. Luo; J. Ma; A.D. Madagammana; A. Madhushan; H. Madrid; F. Magurno; D. Magyar; S. Mahadevakumar; E. Malosso; J.M. Malysh; M. Mamarabadi; I.S. Manawasinghe; R.G. Manfrino; P. Manimohan; N. Mao; A. Mapook; P. Marchese; D.S. Marasinghe; M. Mardones; Y. Marin-Felix; H. Masigol; M. Mehrabi; M. Mehrabi-Koushki; Meiras-Ottoni A de; R.F.R. Melo; R.L. Mendes-Alvarenga; S. Mendieta; Q.F. Meng; A. Menkis; N. Menolli; M. Mikšík; S.L. Miller; B. Moncada; J.M. Moncalvo; J.S. Monteiro; M. Monteiro; H.M. Mora-Montes; E.L. Moroz; J.C. Moura; U. Muhammad; S. Mukhopadhyay; G.L. Nagy; A. NajamulSehar; M. Najafiniya; C.M. Nanayakkara; A. Naseer; E.C.R. Nascimento; S.S. Nascimento; S. Neuhauser; M.A. Neves; A.R. Niazi; Nie Yong; R.H. Nilsson; P.T.S. Nogueira; Y.K. Novozhilov; M. Noordeloos; C. Norphanphoun; N. NuñezOtaño; R.P. O’Donnell; F. Oehl; J.A. Oliveira; I. Oliveira; N.V.L. Oliveira; P.H.F. Oliveira; T. Orihara; M. Oset; K.L. Pang; V. Papp; L.S. Pathirana; U. Peintner; D. Pem; O.L. Pereira; J. Pérez-Moreno; S. Pérez-Ortega; G. Péter; C.L.A. Pires-Zottarelli; M. Phonemany; S. Phongeun; A. Pošta; J.F.S.A. Prazeres; Y. Quan; C.A. Quandt; M.B. Queiroz; R. Radek; K. Rahnama; K.N.A. Raj; K.C. Rajeshkumar; Rajwar Soumyadeep; A.B. Ralaiveloarisoa; T. Rämä; V. Ramírez-Cruz; G. Rambold; A.R. Rathnayaka; M. Raza; G.C. Ren; A.C. Rinaldi; M. Rivas-Ferreiro; G.L. Robledo; A. Ronikier; W. Rossi; K. Rusevska; M. Ryberg; A. Safi; F. Salimi; C.A. Salvador-Montoya; B. Samant; N.P. Samaradiwakara; I. Sánchez-Castro; M. Sandoval-Denis; A.L.C.M.A. Santiago; A.C.D.S. Santos; L.A. dos Santos; V.V. Sarma; S. Sarwar; A. Savchenko; K. Savchenko; R.K. Saxena; N. Schoutteten; L. Selbmann; H. Ševčíková; A. Sharma; H.W. Shen; Y.M. Shen; Y.X. Shu; H.F. Silva; A.G.S. Silva-Filho; V.S.H. Silva; D.R. Simmons; R. Singh; E.B. Sir; M. Sohrabi; F.A. Souza; C.M. Souza-Motta; V. Sri-indrasutdhi; O.P. Sruthi; M. Stadler; J. Stemler; S.L. Stephenson; M.P. Stoyneva-Gaertner; J.F.H. Strassert; M. Stryjak-Bogacka; H. Su; Y.R. Sun; S. Svantesson; P. Sysouphanthong; S. Takamatsu; T.H. Tan; K. Tanaka; C. Tang; X. Tang; J.E. Taylor; P.W.J. Taylor; D.S. Tennakoon; S.A.D. Thakshila; K.M. Thambugala; G.K. Thamodini; D. Thilanga; M. Thines; P.V. Tiago; X.G. Tian; W.H. Tian; S. Tibpromma; Z. Tkalčec; Y.S. Tokarev; M. Tomšovský; G. Torruella; A. Tsurykau; D. Udayanga; M. Ulukapı; W.A. Untereiner; M. Usman; B.A. Uzunov; S. Vadthanarat; R. Valenzuela; S. VandenWyngaert; N. VanVooren; P. Velez; R.K. Verma; L.C. Vieira; W.A.S. Vieira; J.M. Vinzelj; A.M.C. Tang; A. Walker; A.K. Walker; Q.M. Wang; Y. Wang; X.Y. Wang; Z.Y. Wang; N. Wannathes; F. Wartchow; G. Weerakoon; D.P. Wei; X. Wei; J.F. White; D.S.A. Wijesundara; K. Wisitrassameewong; G. Worobiec; H.X. Wu; N. Wu; Y.R. Xiong; B. Xu; J.P. Xu; R. Xu; R.F. Xu; R.J. Xu; S. Yadav; L.S. Yakovchenko; H.D. Yang; X. Yang; Y.H. Yang; Y. Yang; Y.Y. Yang; R. Yoshioka; H. YoussefNoha; F.M. Yu; Z.F. Yu; L.L. Yuan; Q. Yuan; D.A. Zabin; J.C. Zamora; C.V. Zapata; R. Zare; M. Zeng; X.Y. Zeng; J.F. Zhang; J.Y. Zhang; S. Zhang; X.C. Zhang; C.L. Zhao; H. Zhao; H.J. Zhao; Q. Zhao; H.M. Zhou; X.Y. Zhu; I.V. Zmitrovich; L. Zucconi; E. Zvyagina
With the simultaneous growth in interest from the mycological community to discover fungal species and classify them, there is also an important need to assemble all taxonomic information onto common platforms. Fungal classification is facing a rapidly evolving landscape and organizing genera into an appropriate taxonomic hierarchy is central to better structure a unified classification scheme and avoid incorrect taxonomic inferences. With this in mind, the Outlines of Fungi and fungus-like taxa (2020, 2022) were published as an open-source taxonomic scheme to assist mycologists to better understand the taxonomic position of species within the Fungal Kingdom as well as to improve the accuracy and consistency of our taxonomic language. In this paper, the third contribution to the series of Outline of Fungi and fungus-like taxa prepared by the Global Consortium for the Classification of Fungi and fungus-like taxa is published. The former is updated considering our previous reviews and the taxonomic changes based on recent taxonomic work. In addition, it is more comprehensive and derives more input and consensus from a larger number of mycologists worldwide. Apart from listing the position of a particular genus in a taxonomic level, nearly 1000 notes are provided for newly established genera and higher taxa introduced since 2022. The notes section emphasizes on recent findings with corresponding references, discusses background information to support the current taxonomic status and some controversial taxonomic issues are also highlighted. To elicit maximum taxonomic information, notes/taxa are linked to recognized databases such as Index Fungorum, Faces of Fungi, MycoBank and GenBank, Species Fungorum and others. A new feature includes links to Fungalpedia, offering notes in the Compendium of Fungi and fungus-like Organisms. When specific notes are not provided, links are available to webpages and relevant publications for genera or higher taxa to ease data accessibility. Following the recent synonymization of Caulochytriomycota under Chytridiomycota, with Caulochytriomycetes now classified as a class within the latter, based on formally described and currently accepted data, the Fungi comprises 19 Phyla, 83 classes, 1,220 families, 10,685 genera and ca 140,000 species. Of the genera, 39.5% are monotypic and this begs the question whether mycologists split genera unnecessarily or are we going to find other species in these genera as more parts of the world are surveyed? They are 433 speciose genera with more than 50 species. The document also highlights discussion of some important topics including number of genera categorized as incertae sedis status in higher level fungal classification. The number of species at the higher taxonomic level has always been a contentious issue especially when mycologists consider either a lumping or a splitting approach and herein we provide figures. Herein a summary of updates in the outline of Basidiomycota is provided with discussion on whether there are too many genera of Boletales, Ceratobasidiaceae, and speciose genera such as Colletotrichum. Specific case studies deal with Cortinarius, early diverging fungi, Glomeromycota, a diverse early divergent lineage of symbiotic fungi, Eurotiomycetes, marine fungi, Myxomycetes, Phyllosticta, Hymenochaetaceae and Polyporaceae and the longstanding practice of misapplying intercontinental conspecificity. The outline will aid to better stabilize fungal taxonomy and serves as a necessary tool for mycologists and other scientists interested in the classification of the Fungi. © (2024), (Zhongkai University). All Rights Reserved.