ENHANCED T(C) AND STRONG FLUX-PINNING IN MELT-PROCESSED NDBA2CU3OY SUPERCONDUCTORS

被引：168

作者：

YOO, SI

MURAKAMI, M

SAKAI, N

HIGUCHI, T

TANAKA, S

机构：

[1] International Superconductivity Technology Center, Superconductivity Research Laboratory, Minato-ku, Tokyo, 105, 1-16-25, Shibaura

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1994年 / 33卷 / 7B期

关键词：

NDBA2CU3O(Y); MELT PROCESS; OXYGEN PARTIAL PRESSURE; ANOMALOUS PEAK EFFECT; FLUX PINNING; ND(1+X)BA(2-X)CU3O(Y) SOLID SOLUTIONS;

D O I：

10.1143/JJAP.33.L1000

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of various oxygen partial pressures (P(O2)) during melt processing on the superconducting properties of fabricated NdBa2Cu3Oy (Nd123) superconductors have been systematically investigated. Unlike in air or 02, samples melt-processed in reduced oxygen atmospheres exhibited unprecedentedly high T(c)'s of 95-96 K with a sharp superconducting transition. Especially, for a sample melt-processed in 0.1% 02 in Ar, the magnetization hysteresis (M-H) loop was kept open up to 7 T at 77 K and for the field parallel to the c-axis of the sample (H//c), implying that very effective flux pinning can be achieved in high magnetic fields.

引用

页码：L1000 / L1003

页数：4

共 15 条

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