Field-dependent Behavior of AC Susceptibility in [Y0.8 Ca0.2 ](Ba0.5 Sr0.5 )2 Cu3 O7−δ
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Article
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Abstract
The AC susceptibility of Y0.8Ca0.22 Cu3O7−δ was investigated as a function of frequency and amplitude of AC magnetic field. The susceptibilities of the sample display the field amplitude dependence. The peak temperature (Tp) of its imaginary part shows not frequency dependence but field amplitude dependence. The frequency effect on AC susceptibility was negligible. As the field amplitude increases, Tp shifts to lower temperature. This effect can be interpreted in terms of bulk pinning hysteresis loss due to the vortices motion in/out grain boundary.
Description
Keywords
[Y0.8Ca0.2](Ba0.5Sr0.5)(2)Cu3O7-delta, AC susceptibility, Rietveld refinement
Journal Title
Journal of Superconductivity and Novel Magnetism
Conference Name
Journal ISSN
1557-1939
1557-1947
1557-1947
Volume Title
29
Publisher
Springer Science and Business Media LLC
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Sponsorship
The work in Peru has been supported by the Superior Council of Research of the National University of San Marcos (Grant No. 151301031). This work was also supported by the National Research Foundation of President Post-doctoral fellowship Program (NRF-2013R1A6A3A060443). “L. De Los Santos thanks the Ministry of the Production “Programa Nacional de Innovacion´ para la Competitividad y Productividad” for financial support (Project ECIP-1-P-069-14)”.