Fundamental and harmonic susceptibilities of an oxide superconductor synthesized by the polymerized complex method

✍ Scribed by Hiromasa Mazaki; Hiroshi Yasuoka; Masato Kakihana; Hirotaka Fujimori; Masatomo Yashima; Masahiro Yoshimura

• Book ID: 103950123
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 549 KB
• Volume: 252
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(95)00447-5

✦ Synopsis

To examine the utility of the Kim-Anderson model for the study of the magentic response of ceramic superconductors, we measured ac complex susceptibilities Xn = X"-ix~' (n = 1, 2, 3) of an oxide superconductor YBa2Cu2.95Co0.05Oy synthesized by the polymerized complex method, and attempted to simulate the results in the framework of this model. Analyses of X, have shown that generation of the harmonic susceptibilities can be reproduced pretty well by the model, where the material parameters k and B o involved were determined so as to give the best fit to the observed Xn" Comparison of k which corresponds to the pinning force against a flux quantum with those obtained for other ceramic specimens prepared by other methods have revealed that k well reflects the sample quality in view of critical current density.