CRITICAL CURRENTS AND MAGNETIZATION PROPERTIES OF YBCO PREPARED BY MPMG PROCESS

被引：22

作者：

FUJIMOTO, H

MURAKAMI, M

GOTOH, S

YAMAGUCHI, K

YOSHIDA, M

TAKATA, T

KOSHIZUKA, N

TANAKA, S

机构：

[1] Superconductivity Res. Lab., ISTEC, Tokyo

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1992年 / 5卷

关键词：

D O I：

10.1088/0953-2048/5/1S/016

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

YBaCuO prepared by the Melt-Powder-Melt-Growth (MPMG) process has high critical current density over 30,000 A/cm2 at 77K and 1T. It has been found that non-superconducting Y2BaCuO5 (211) particles dispersed in the 123 superconducting phase are responsible for high Jc values. The values of critical current densities increased with increasing the volume fraction of the 211 particles. An anomalous second peak was observed in magnetization loops for some samples which showed a broad Tc transition in AC measurements, suggesting that some kinds of defects are responsible for the peak.

引用

收藏

页码：S93 / S96

页数：4

相关论文

共 16 条

[1] MAGNETIZATION OF HARD SUPERCONDUCTORS [J].

BEAN, CP .

PHYSICAL REVIEW LETTERS, 1962, 8 (06) :250-+

[2] FLUX LINE PINNING BY LARGE NORMAL PARTICLES IN TYPE-II SUPERCONDUCTORS [J].

COOTE, RI ;

CAMPBELL, AM ;

EVETTS, JE .

CANADIAN JOURNAL OF PHYSICS, 1972, 50 (05) :421-&

[3] OXYGEN-DEFECT FLUX PINNING, ANOMALOUS MAGNETIZATION AND INTRAGRAIN GRANULARITY IN YBA2CU3O7-DELTA [J].

DAEUMLING, M ;

SEUNTJENS, JM ;

LARBALESTIER, DC .

NATURE, 1990, 346 (6282) :332-335

[4] DIRECT OBSERVATION OF ELECTRONIC ANISOTROPY IN SINGLE-CRYSTAL Y1BA2CU3O7-X [J].

DINGER, TR ;

WORTHINGTON, TK ;

GALLAGHER, WJ ;

SANDSTROM, RL .

PHYSICAL REVIEW LETTERS, 1987, 58 (25) :2687-2690

[5]

Fujimoto H., 1990, Advances in Superconductivity II. Proceedings of the 2nd International Symposium on Superconductivity (ISS '89), P285

[6]

FUJIMOTO H, 1991, ADV SUPERCONDUCTIVIT, V3, P519

[7] MELT-TEXTURED GROWTH OF POLYCRYSTALLINE YBA2CU3O7-DELTA WITH HIGH TRANSPORT JC AT 77 K [J].

JIN, S ;

TIEFEL, TH ;

SHERWOOD, RC ;

VANDOVER, RB ;

DAVIS, ME ;

KAMMLOTT, GW ;

FASTNACHT, RA .

PHYSICAL REVIEW B, 1988, 37 (13) :7850-7853

[8] MAGNETIC-FLUX PINNING PROPERTIES OF OXIDE SUPERCONDUCTORS PRODUCED BY MELT PROCESSES [J].

MATSUMOTO, K ;

KIKUCHI, H ;

UNO, N ;

TANAKA, Y .

CRYOGENICS, 1990, 30 (01) :5-10

[9]

MATSUSHITA T, 1988, PROGR HIGH TEMPERATU, V15, P49

[10] CRITICAL CURRENTS AND FLUX CREEP IN MELT PROCESSED HIGH-TC OXIDE SUPERCONDUCTORS [J].

MURAKAMI, M ;

GOTOH, S ;

KOSHIZUKA, N ;

TANAKA, S ;

MATSUSHITA, T ;

KAMBE, S ;

KITAZAWA, K .

CRYOGENICS, 1990, 30 (05) :390-396