PREPARATION AND CRITICAL-CURRENT DENSITY OF MELT-TEXTURED Y-BA-CU-O SUPERCONDUCTOR CONTAINING FINE Y2BACUO5 INCLUSIONS

被引：12

作者：

KIM, CJ ^{[1
]}

PARK, HW ^{[1
]}

KIM, KB ^{[1
]}

LEE, KW ^{[1
]}

HONG, GW ^{[1
]}

机构：

[1] KOREA RES INST STAND & SCI,SUPERCONDUCT LAB,TAEJON 305606,SOUTH KOREA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1995年 / 34卷 / 6A期

关键词：

Y-BA-CU-O SUPERCONDUCTOR; MELT-TEXTURE GROWTH; ATTRITION MILLING; CEO2; ADDITION; Y2BACUO5; DISPERSION; CRITICAL CURRENT DENSITY;

D O I：

10.1143/JJAP.34.L671

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Melt-textured YBa2Cu3Oy superconductor containing fine Y2BaCuO5 inclusions (a few hundreds nanometers in size) was prepared by using of attrition-milled YBa2Cu3Oy/Y2BaCuO5 powder with 1 wt% CeO2 addition. It is found that the combination of the CeO2 addition and the mechanical milling of the powder mixture is effective in reducing Y2BaCuO5 size. The critical current density (J(c)) of the sample containing fine Y2BaCuO5 is higher than that of the sample containing coarse Y2BaCuO5. J(c) for H//c-axis of Y1.8Ba2.4Cu3.4Oy With coarse Y2BaCuO5 was 1.1x10(4) A/cm(2) and 0.56 x 10(4) A/cm(2), while J, of Y1.8Ba2.4Cu3.4Oy With fine Y2BaCuO5 was 2.0 x 10(4) A/cm(2) and 1.16 x 10(4) A/cm(2) at 1 T, 2 T and 77 K, respectively.

引用

页码：L671 / L674

页数：4

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