UPPER CRITICAL-FIELD AND NORMAL-STATE RESISTIVITY OF THE HIGH-TC SUPERCONDUCTORS RBA2CU3OY (R = Y, GD, DY, HO, ER AND YB)

被引：0
|
作者：
IKEDA, K [1 ]
KATSUMATA, K [1 ]
KOBAYASHI, N [1 ]
机构：
[1] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 980,JAPAN
来源：
MATERIALS TRANSACTIONS JIM | 1990年 / 31卷 / 03期
关键词：
electrical resistivity; RBa[!sub]2[!/sub]Cu[!sub]3[!/sub]O[!sub]y[!/sub; superconductor; upper critical field;
D O I：
10.2320/matertrans1989.31.184
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrical resistivity of the superconducting RBa2Cu3Oy (R=Y, Gd, Dy, Ho, Er and Yb) compounds, which were prepared by prefiring and sintering in air or oxygen, was measured in zero field and various magnetic fields up to 15 T. The experimental results show that the sintering in oxygen is indispensable for the formation of the superconducting RBa2Cu3Oy phase. The upper critical field at 0 K in the superconducting RBa2Cu3Oy compounds with the transition temperature of ∽ 90 K has been determined to be ∽ 170 T, and it is suggested that the purified superconducting phase has the normal-state resistivity of ≲3 μΩ⋅m, if the previous theory of the type-II superconductivity is applied. © 1990, The Japan Institute of Metals. All rights reserved.
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页码：184 / 189
页数：6
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