SUPERCONDUCTIVE PROPERTIES OF THE YBA2CU4O8 SUPERCONDUCTOR

被引：2

作者：

SARKAR, AK ^{[1
]}

KOZLOWSKI, G ^{[1
]}

MAARTENSE, I ^{[1
]}

机构：

[1] WRIGHT RES & DEV CTR,AERO PROP & POWER LAB,WRIGHT PATTERSON AFB,OH 45433

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 10期

关键词：

magnetization; sintering; superconductors; susceptibility;

D O I：

10.1111/j.1151-2916.1990.tb06729.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A bulk density of 85% of the theoretical density was achieved by sintering a powder compact of YBa2Cu4O8 (124) at 850°C in flowing oxygen at 1 atm (≅105 Pa). This value is very close to that obtained by the hot isostatic pressure technique (90%). The superconducting properties of the sample were characterized by magnetization and ac susceptibility techniques. The magnetization critical current density at 20 K in zero field was determined to be ∼5 × 104 A/cm2, and the superconducting transition temperatures were found to be 77 K for the bulk material and 82 K for the granular phase. The powder X‐ray diffraction and ac susceptibility studies revealed the sintered 124 material to be single phase. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：3110 / 3112

页数：3

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