Frequency response of AC susceptibility in melt textured YBCO superconductors

• Published in: Journal of superconductivity Vol. 18; no. 2; pp. 281 - 285
• Main Authors: LIU, S. L, WU, J. G, XU, X. B, WU, J, SHAO, H. M, CAI, Y. M, JIN, X. C
• Format: Journal Article
• Language: English
• Published: New York, NY Kluwer/Plenum 01.04.2005
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cuprates superconductors (high tc and insulating parent compounds); Exact sciences and technology; Granular, melt-textured, amorphous and composite superconductors; Inhomogeneous superconductors and superconducting systems; Magnetic properties and materials; Physics; Properties of type I and type II superconductors; Superconductivity; Vortex lattices ,flux pinning, flux creep; Frequency dependence; Vortex glass; Barium oxides; Scaling laws; High-Tc superconductors; Magnetic field effects; Quaternary compounds; Copper oxides; Melt texturing; Yttrium oxides; Magnetic susceptibility
• ISSN: 0896-1107; 1572-9605
• DOI: 10.1007/s10948-005-3382-7

We have reviewed the scaling relations for frequency dependent AC susceptibility proposed by Lee. et al. and other contributions. Based on vortex glass analysis, we derived a scaling equation for the peak temperature of the imaginary part and ac magnetic field frequency f. The peak temperature Tp is found to obey: Tp = Cf+Tg, where C is a constant, and Tg is the vortex glass temperature. The scaling relationship was applied to our melt textured YBCO superconductors, which was found in good agreement with the experimental data.