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Anomalous electrical properties of poly vinyl alcohol films with Tb3+ ions and copper nanoparticles in different solvents

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dc.contributor.authorKumar, Brijesh
dc.contributor.authorKaur, Gagandeep
dc.contributor.authorSingh, Prabhakar
dc.contributor.authorRai, S.B.
dc.date.accessioned2025-03-03T05:04:57Z
dc.date.available2025-03-03T05:04:57Z
dc.date.issued2015
dc.description.abstractLaser ablation was used to fabricate copper nanoparticles (NPs) in different solvents from sodium lauryl sulphate, acetone and ethanol by applying 1064 nm radiation from a Nd:YAG laser. The sizes and shapes of the colloidal Cu NPs were investigated by transmission electron microscopy (TEM). The electrical conductivities of Tb3+ in polymer films with Cu NPs were measured in the frequency range of 20 Hz to 1 MHz and the temperature range of 308-343 K. It was found that the electrical conductivity of Tb3+ was greater for larger Cu NPs with sizes ranging from 20-40 nm in ethanol as compared to Cu NPs with smaller dimensions formed in the other two solvents. It was concluded that using ethanol as the solvent enhanced the electrical conductivity of Tb3+ in the polymer film. The activation energy as well as the variation in the loss tangent with temperature also explains the enhanced electrical conductivity. This journal is © The Royal Society of Chemistry 2015.
dc.identifier.doihttps://doi.org/10.1039/c4ra10280k
dc.identifier.issn20462069
dc.identifier.urihttps://dl.bhu.ac.in/ir/handle/123456789/76467
dc.publisherRoyal Society of Chemistry
dc.titleAnomalous electrical properties of poly vinyl alcohol films with Tb3+ ions and copper nanoparticles in different solvents
dc.typeArticle
dspace.entity.typePublication
journal.titleRSC Advances
journalvolume.identifier.volume5

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2015