Study of harmonic generation in Hg(Tl)BaCaCuO thin film

Abstract

The generation of higher harmonics in Hg(Tl)BaCaCuO high-Tc thin film is reported, when an ac magnetic field is applied to it. The film has been prepared by the spray pyrolysis technique using two step process and exhibits Tc(R = 0) = 123 K. Application of an ac magnetic field (Hac > Hc1) on the film leads to generation of higher odd harmonics. Further, application of the dc field (Hdc) in addition to the ac field causes generation of even harmonics also. Variations of amplitude of these harmonics as a function of Hac, Hdc and temperature are studied. The variation of second and third harmonic amplitudes with Hdc shows the hysteresis effect. © 1998 Published by Elsevier Science B.V. All rights reserved.