NDBCO MELTING AND SOLIDIFICATION BY A ZONE-MELTING METHOD

被引：12

作者：

YAO, X

FURUYA, K

NAKAMURA, Y

WEN, J

ENDOH, A

SUMIDA, M

SHIOHARA, Y

机构：

[1] Superconductivity Research Laboratory, Division IV, International Superconductivity Technology Center, Koto-ku, Tokyo, 135

来源：

JOURNAL OF MATERIALS RESEARCH | 1995年 / 10卷 / 12期

关键词：

D O I：

10.1557/JMR.1995.3003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the Nd-Ba-Cu-O system, a directional structure produced by a peritectic reaction has been observed. On heating, the sintered Nd1Ba2CU3O6+delta (Nd123) precursor formed a rod-like directional structure of Nd4Ba2-Cu2O10 (Nd422) phase. These Nd422 rods became thicker from the melting interface to the solidified interface. The [100] direction of Nd422 crystal is parallel to the axis of Nd422 rod and the sample pulling direction. Moreover, Nd422 rod spacing was observed as a function of growth rate and decreased with an increase of growth rate. In addition, with an increase of growth rate, Nd123 solidified interface morphologies changed from planar, cellular to equiaxed.

引用

页码：3003 / 3008

页数：6

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