INFLUENCE OF OXYGEN PARTIAL-PRESSURE ON THE SOLUBILITY OF Y2O3 IN THE HIGH-TC PHASE OF BI-PB-SR-CA(Y)-CU-O SUPERCONDUCTING OXIDE

被引：6

作者：

IWAI, Y ^{[1
]}

KOBAYASHI, T ^{[1
]}

SAITO, H ^{[1
]}

TAKATA, M ^{[1
]}

机构：

[1] NAGAOKA UNIV TECHNOL,NAGAOKA,NIIGATA 94021,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 5B期

关键词：

2212; PHASE; 2223; Y2O3; OXYGEN PARTIAL PRESSURE; SOLUBILITY;

D O I：

10.1143/JJAP.30.L891

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The solubility of Y2O3 in the high T(C) phase (2223 phase) of (Bi, Pb)-based superconducting oxides was investigated to examine the possibility of substitution of Y3+ for Ca2+. Under P(o2) = 0.21 atm, approximately x = 0.02 (x = Y/Ca+Y) of Y2O3 was found to be soluble. The solubility was measured as a function of the oxygen partial pressure (P(o2)) at 790-degrees-C. Under lower P(o2), the Y-substituted 2223 phase was unstable and decomposed partially into the 2212 phase. The stable area of the 2223 phase was narrowed and the solubility of Y2O3 in the 2223 phase was decreased with decreasinff P(o2). Electrical resistivity was increased and T(C,zero) was decreased by doping with Y2O3.

引用

页码：L891 / L893

页数：3

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