Observation of a novel stacking-fault nucleation mechanism in melt-textured YBa2Cu3O7

被引：4

作者：

Rabier, J

Sandiumenge, F

Plain, J

Proult, A

Stretton, I

机构：

[1] Univ Poitiers, Met Phys Lab, UMR 6630, CNRS, F-86962 Futuroscope, France

[2] Inst Ciencia Mat Barcelona, Consejo Super Invest Cientif, Bellaterra 08193, Spain

[3] Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2002年 / 82卷 / 08期

关键词：

D O I：

10.1080/09500830210148810

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dislocation substructure of melt-textured YBa2Cu3O7-Y2BaCuO5 composites deformed under uniaxial compressive stress and a superposed gaseous confining pressure has been investigated by transmission electron microscopy. Observations reveal the generation of perfect dislocations in (001) as well as out of this plane. Screw segments of the latter lying on (001) are seen to act as Frank-Read sources for 1/6 [301] partials bounding YBa2Cu4O8-type stacking faults, according to a mechanism previously anticipated from theoretical considerations by one of the present authors.

引用

页码：419 / 423

页数：5

共 12 条

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ZANDBERGEN, HW ;

GRONSKY, R ;

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THOMAS, G .

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