AC susceptibility of YBa2Cu3O7-d superconducting thin film in a perpendicular field

Details AC susceptibility of YBa2Cu3O7-d superconducting thin film in a perpendicular field AC susceptibility of YBa2Cu3O7-d superconducting thin film in a perpendicular field

2002-11-30

arxiv.org/abs/cond-mat/0212007v1

physica B,321 (2002) 337

Physics

Condensed Matter

Superconductivity

15 pages, 6 figures

Scientific paper

The temperature dependence of ac susceptibility of YBCO thin film was measured as a function of frequency and ac field amplitude in a field perpendicular to the film plane. We show that all measured ac susceptibility curves can be caled into a single curve using the peak temperature (Tp) of its imaginary part as the scaling parameter. The frequency effect on ac susceptibility was also measured. As the frequency increases,(Tp)shifts to higher temperature.This effect can be interpreted in terms of flux creep. The temperature T,and field,Hac, dependence of the activation energy obtained from the Arrhenius plot for the frequency(f)and(Tp),can be described as U(Hac,T)=Uo(1-T/Tc)Hac^(-0.18).

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