SUBSTITUTION EFFECT OF RARE-EARTH ELEMENTS FOR Y IN PB-SR-Y-CA-CU-O WITH 1212 STRUCTURE

被引：14
作者：
ADACHI, S
ADACHI, H
SETSUNE, K
WASA, K
机构：
[1] Central Research Laboratories, Matsushita Electric Industrial Co. Ltd, Moriguchi Osaka, 570
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1991年 / 30卷 / 6B期
关键词：
OXIDE SUPERCONDUCTOR; HIGH-TC SUPERCONDUCTOR; LEAD CUPRATE; 1212; STRUCTURE; SUBSTITUTION; RARE EARTH;
D O I：
10.1143/JJAP.30.L1099
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The superconducting transition temperature (T(c)) and lattice constants of "1212" lead cuprate, (Pb/Cu)Sr2(Ln/Ca) Cu2O(z) (Ln = Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu and Y), were investigated. (Pb0.75Cu0.25)Sr2(Ln0.4Ca0.6)Cu2O(z) ceramics were prepared by sintering at 1000-degrees-C for 1 h in oxygen. Obtained ceramics were annealed at 800-degrees-C for 24 h in oxygen and subsequently quenched. Linear correlation between lattice constants and ionic radii of Ln was observed in the "1212" phases. The T(c) value increased with decreasing ionic radii of Ln. The Ln = Lu sample exhibited a T(c)(zero resistivity) of 61 K in our oxperiments.
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页码：L1099 / L1101
页数：3
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