Fishtail effect, magnetic properties and critical current density of Gd-added PMP YBCO

被引：26

作者：

Feng, Y

Zhou, LA

Wen, JG

Koshizuka, N

Sulpice, A

Tholence, JL

Vallier, JC

Monceau, P

机构：

[1] NW Inst Nonferrous Met Res, Xian 710016, Shaanxi, Peoples R China

[2] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 135, Japan

[3] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble 9, France

[4] CNRS, LCMI, F-38042 Grenoble 9, France

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1998年 / 297卷 / 1-2期

关键词：

YBCO; fishtail effect; flux pinning; Gd addition;

D O I：

10.1016/S0921-4534(97)01847-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetization curves of YBa2Cu3Oy and Y0.4Gd0.6Ba2Cu3Oy samples prepared by a powder melting process technique were measured with a superconducting quantum interference device magnetometer at different temperatures. Fishtail effects are observed below 70 K with the H perpendicular to c configuration in the Gd-added sample, while no peak effect is found in YBCO. The origin of the fishtail is discussed. It is found that J(c) and flux pinning can be increased by the Gd addition. The magnitude of the improvement of J(c) increases with the magnetic field. The reduction of the size of Y2BaCuO5 particles, stress-field pinning and magnetic pinning induced by the substitution of Gd for Y may explain the enhancement of J(c) and flux pinning. (C) 1998 Elsevier Science B.V.

引用

页码：75 / 84

页数：10

共 43 条

[1] ENHANCED FLUX-PINNING AND CRITICAL CURRENTS BY HF AND HF-CA SUBSTITUTION IN YBA2CU3O7-DELTA [J].