CRYSTALLOGRAPHICALLY ORIENTED SUPERCONDUCTING BI2SR2CACU2O8 BY SHOCK COMPACTION OF PREALIGNED POWDER

被引：14

作者：

SEAMAN, CL

WEIR, ST

EARLY, EA

MAPLE, MB

NELLIS, WJ

MCCANDLESS, PC

BROCIOUS, WF

机构：

[1] UNIV CALIF SAN DIEGO,INST PURE & APPL PHYS SCI,LA JOLLA,CA 92093

[2] UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550

来源：

APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 01期

关键词：

D O I：

10.1063/1.104209

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Highly textured specimens of Bi2Sr2CaCu 2O8 were obtained by shock compaction of powder at 30-140 kbar and by sintering. The compacts were characterized by x-ray diffraction, magnetic susceptibility, electrical resistance, optical microscopy, and scanning electron microscopy data. Preferential orientation with the a-b plane in the plane of the disk-shaped compacts was achieved by tapping platelet-shaped powder with a controlled size distribution, followed by shock compaction or by sintering. The shocked compacts were annealed to induce metallic resistance while maintaining preferential crystallographic orientation. The electrical and magnetic data demonstrate that shock compaction heterogeneously heats and bonds grain boundaries.

引用

页码：93 / 95

页数：3

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