SUPERCONDUCTIVITY IN GA-BASED-1212 CUPRATES

被引：18

作者：

ADACHI, S

KUBO, K

TAKANO, S

YAMAUCHI, H

机构：

[1] Superconductivity Research Laboratory, International Superconductivity Technology Center, Koto-ku, Tokyo, 135

来源：

PHYSICA C | 1992年 / 191卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(92)90644-R

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The superconductivity in Ga-based cuprates of the "1212" structure was investigated. Ceramic samples of the nominal compositions of (Ga1-yCuy)Sr2(Y1-xCax)Cu2O7 with (x, y) = (0.0-0.6, 0.0-0.2) were prepared by using an O2-HIP (hot isostatic pressing) technique. In the case of samples with y = 0.0, the solubility of Ca, x, was found to be up to about 0.4. The sample with x = 0.4 showed superconductivity of T(c)(Meissner) = 40 K. For the sample with x = 0.4, partial substitution of Cu for Ga induced superconductivity of T(c)(Meissner) = 50 K. The obtained results suggested that the Ga-"1212" and (Ga/Cu)-"1212" phases were respectively a 40 K-class and a 50 K-class superconductor.

引用

页码：174 / 178

页数：5

共 17 条

[1] A NEW TYPE OF CRYSTAL-STRUCTURE IN THE PB-PR-SR-CU-O SYSTEM [J].

ADACHI, S ;

INOUE, O ;

KAWASHIMA, S ;

ADACHI, H ;

ICHIKAWA, Y ;

SETSUNE, K ;

WASA, K .

PHYSICA C, 1990, 168 (1-2) :1-7

[2] SUPERCONDUCTIVITY IN 1201 LEAD CUPRATE [J].

ADACHI, S ;

SETSUNE, K ;

WASA, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1990, 29 (06) :L890-L892

[3]

CAVA RJ, IN PRESS PHYSICA C

[4] SEARCH FOR NEW HIGH-TC OXIDE STRUCTURES [J].

HAUCK, J ;

MIKA, K .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1991, 175 (3-4) :386-392

[5]

Kokubun M., 1991, Journal of the Japan Society of Powder and Powder Metallurgy, V38, P195, DOI 10.2497/jjspm.38.195

[6] SUPERCONDUCTIVITY IN PB-BASED LAYERED COPPER OXIDES, (PB0.5CU0.5)(SR,BA)2(Y,CA)CU2O7 [J].

KORIYAMA, S ;

SAKUYAMA, K ;

MAEDA, T ;

YAMAUCHI, H ;

TANAKA, S .

PHYSICA C, 1990, 166 (5-6) :413-416

[7] NEW SUPERCONDUCTING CUPRATES (PB,CU)(EU,CE)2(SR,EU)2CU2OZ [J].

MAEDA, T ;

SAKUYAMA, K ;

KORIYAMA, S ;

ICHINOSE, A ;

YAMAUCHI, H ;

TANAKA, S .

PHYSICA C, 1990, 169 (1-2) :133-136

[8] POSSIBLE COPPER BASED SUPERCONDUCTORS BY THE COMBINATION OF BLOCKING AND MEDIATING LAYERS [J].

NOBUMASA, H ;

SHIMIZU, K ;

KAWAI, T .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 83 (01) :7-17

[9]

POEPPELMEIER KK, IN PRESS PHYSICA C

[10]

ROTH G, IN PRESS J PHYS PARI

← 1 2 →