High critical current density and its magnetic fields dependence in (Sm,Eu,Gd)Ba2Cu3Oy films by using multiple targets

被引：2

作者：

Takahashi, Yuya ^{[1
]}

Tsuruta, Akihiro ^{[1
]}

Ichino, Yusuke ^{[1
]}

Yoshida, Yutaka ^{[1
]}

Awaji, Satoshi ^{[2
]}

Ichinose, Ataru ^{[3
]}

Matsumoto, Kaname ^{[4
]}

机构：

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

[2] Tohoku Univ, Sendai, Miyagi 9808577, Japan

[3] Cent Res Inst Elect Power Ind, Yokosuka, Kanagawa 2400196, Japan

[4] Kyushu Inst Technol, Tobata Ku, Kitakyushu, Fukuoka 8048550, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2013年 / 484卷

关键词：

REBa2Cu3Oy; Low temperature growth; Pinning; Films; ENHANCEMENT;

D O I：

10.1016/j.physc.2012.03.019

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Melt textured bulks of (Sm0.33Eu0.33Gd0.33)Ba2Cu3Oy (SEG123) show high J(c) compared with that of YBa2Cu3Oy (Y123), because of nanoscopic network consisting of crossing rare earth (RE) compositional stripes. In this study, we fabricated SEG123 films by using pulsed laser deposition (PLD) method on LaAlO3 (LAO) substrates and evaluated the J(c) and T-c in magnetic field. J(c) of the SEG123 film was typically 1.4 MA/cm(2) at 77 K in self-field. J(c) in self-field of SEG123, Y123 and Sm123 films were almost the same value, however, J(c) in magnetic fields showed a notable difference. The J(c) of SEG123 film were 62.7 kA/cm(2) at 5 T. We conclude that the J(c) in magnetic fields were improved by RE-rich particle made of RE/Ba substitution acting as 3-dimensional pinning centers. Moreover we have confirmed that the superconducting properties changes by varying Sm, Eu and Gd composition ratio. (C) 2012 Published by Elsevier B.V.

引用

页码：130 / 133

页数：4

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