The Influence of Postannealing on Structural and Superconducting Properties of Bi-2212 Ceramics

被引：10
作者：
Ozkurt, Berdan [1 ]
Madre, M. A. [2 ]
Sotelo, A. [2 ]
Diez, J. C. [2 ]
机构：
[1] Mersin Univ, Fac Tarsus Technol, Dept Energy Syst Engn, Mersin, Turkey
[2] Univ Zaragoza, CSIC, ICMA, Zaragoza 50018, Spain
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2013年 / 26卷 / 11期
关键词：
Bi-2212; XRD; Electrical resistivity; Hysteresis loops; CU-O SUPERCONDUCTOR; LASER FLOATING-ZONE; TEXTURED RODS; ELECTRICAL-PROPERTIES; AG; MICROSTRUCTURE; PHASE; COMPOSITES; SUBSTITUTION; PRECURSORS;
D O I：
10.1007/s10948-013-2193-5
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effect of postannealing on the structural and superconducting properties of Bi-2212 sintered ceramic samples prepared by the solid state reaction method has been investigated. Postannealing times were varied from 0 h to 192 h at 700 C-a similar to. Electrical resistivity studies showed that postannealed samples at 96 h have the lowest room temperature values while critical transition temperature does not change significantly. XRD data have shown that the Bi-2212 phase content does not change noticeably, independently of the postannealing length. In addition, J (c) values, calculated from the hysteresis loops using the Bean's model, increased with increasing the postannealing time until 48 h and decrease for longer ones.
引用
收藏
页码：3247 / 3252
页数：6
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