The Influence of BaZrO3 on the Magnetic Response of (Bi,Pb) : 2223 High-Temperature Superconductors |
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| Authors: | V. Mihalache G. Aldica S. Popa P. Nita A. Crisan |
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| Affiliation: | (1) National Institute for Materials Physics, P.O. Box MG-7, Bucharest, Romania;(2) METAV S.A., P.O. Box 18/3, Bucharest, Romania;(3) Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba, Ibaraki, 305-8568, Japan |
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| Abstract: | DC magnetization and AC complex susceptibility measurements on (Bi,Pb) : 2223 high-temperature superconductors impurified with various amounts of BaZrO3 are presented. The results are discussed in the frame of the critical state model, and the values of the inter- and intragranular critical current density as well as of the field for full penetration are estimated. The values of the intergranular critical current density are consistent with those obtained from transport measurements. The intragranular critical current density and the field for full penetration have similar values from both DC magnetization and AC susceptibility measurements. It was shown that, in the (Bi,Pb) : 2223 system, BaZrO3 impurification changes only the properties of the intergrain matrix, while the superconducting properties of the grains are not modified. |
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| Keywords: | (Bi,Pb) : 2223 superconductors BaZrO3 impurification magnetization susceptibility critical current density |
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