PROCESS PARAMETERS, ORIENTATION, AND FUNCTIONAL-PROPERTIES OF MELT-PROCESSED BULK Y-BA-CU-O SUPERCONDUCTORS

被引：0

作者：

ZAKHARCHENKO, IV ^{[1
]}

TERRYLL, KM ^{[1
]}

RAO, KV ^{[1
]}

BALACHANDRAN, U ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV ENERGY TECHNOL,ARGONNE,IL 60439

来源：

JOURNAL OF ELECTRONIC MATERIALS | 1995年 / 24卷 / 12期

关键词：

MELT PROCESSING; ORIENTATION; ROCKING CURVE;

D O I：

10.1007/BF02653009

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This study compared the microstructure, texturing, and functional properties (critical currents) of YBa2Cu3O7-x-based bulk pellets that were prepared by the quench-melt-growth-process (QMGP), melt-textured growth, and conventional solid-state reaction approaches. Using two x-ray diffraction methods, theta-2 theta, and rocking curves, we found that the individual grains of two melt-processed pellets exhibited remarkable preferred orientational alignment (best rocking curve width = 3.2 degrees). However, the direction of the preferred orientation among the grains was random. Among the three types of bulk materials studied, the QMGP sample was found to have the best J(c) values, approximate to 4500 A/cm(2) at 77K in a field of 2 kG, as determined from superconducting quantum interference device magnetic data.

引用

页码：1913 / 1917

页数：5

共 11 条

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