Higher critical current density achieved in Bi-2223 High-Tc superconductors

被引:17
|
作者
Shalaby, M. S. [2 ]
Hashem, H. M. [1 ]
Hammad, T. R. [1 ]
Wahab, L. A. [2 ]
Marzouk, K. H. [2 ]
Soltan, S. [1 ]
机构
[1] Helwan Univ, Fac Sci, Dept Phys, Helwan Cairo 11798, Egypt
[2] Atom Energy Author, Dept Solid State & Accelerators, Natl Ctr Radiat Res & Technol, Cairo, Egypt
关键词
Superconductors; Bi-2223; Critical current density; Magnetoptics; SYSTEM; MICROSTRUCTURE; MAGNETIZATION; PHASE;
D O I
10.1016/j.jrras.2016.04.001
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Bi2Sr2Ca2Cu3Ox (Bi-2223) were prepared using a solid state reaction method at different sintering times and temperatures. Structural phase identifications have been done using X-Ray analysis and refinement by Reitveld method which proves the coexistence of Bi-2223 and Bi-2212 phases. The critical transition temperature T-c and critical current density J(c) values were measured using superconducting quantum interference device magnetometer (SQUID) and by the magneto-optics technique. A remarkable rapid decrease to the diamagnetic signal in the magnetization versus temperature M(T) at 110 K and J(c) around 1.2 x 10(7) A/m(2) at 5 K are confirmed for the Bi-2223 compound. Copyright (C) 2016, The Egyptian Society of Radiation Sciences and Applications. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页码:345 / 351
页数:7
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