Stable barium compounds in YBa2Cu3Oy superconductors

被引：2

作者：

Kita, R. ^{[1
]}

Suzuki, K. ^{[1
]}

Takeuchi, T. ^{[1
]}

Iwasa, T. ^{[1
]}

Miura, O. ^{[2
]}

Ichino, Y. ^{[3
]}

Yoshimura, T. ^{[3
]}

Yoshida, Y. ^{[3
]}

Yamada, K. ^{[4
]}

Kaneko, K. ^{[4
]}

Ichinose, A. ^{[5
]}

机构：

[1] Shizuoka Univ, Naka Ku, Hamamatsu, Shizuoka 4328561, Japan

[2] Tokyo Metropolitan Univ, Tokyo 1920364, Japan

[3] Nagoya Univ, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[4] Kyushu Univ, Higashi Ku, Fukuoka 9928510, Japan

[5] CRLEPI, Yokohama, Kanagawa 2400916, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2011年 / 471卷 / 21-22期

关键词：

BaTbO3; Ba3Cu3In4O12; Artificial pinning center; Thin film;

D O I：

10.1016/j.physc.2011.05.074

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The stability of various amounts of Ba3Cu3In4O12 (334) or BaTbO3 (BTO) in a sintered YBa2Cu3Oy (YBCO) matrix was examined. Samples with added 334 or BTO exhibited critical temperatures (T-c) above 90 K for up to 20 vol.% addition and improved critical current densities (J(c)) under a magnetic field. X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) analysis indicated that 334 and BTO did not react with the YBCO matrix under the sintering conditions used. The normalized J(c) under a magnetic field of 1 T reached a maximum at 14 vol.% of 334 addition and 20 vol.% BTO addition. YBCO thin films with added BTO showed a gradual decrease in the T-c with increasing BTO content. YBCO films with added 334 showed a constant T-c of 87 K up to a 334 content of 4 vol.%. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：859 / 862

页数：4

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