FERROELASTICITY, PSEUDOELASTICITY AND SHAPE MEMORY EFFECT IN PB3(PO4)2

被引：7

作者：

YAMADA, Y ^{[1
]}

UESU, Y ^{[1
]}

机构：

[1] WASEDA UNIV,DEPT PHYS,SHINJUKU KU,TOKYO 169,JAPAN

来源：

SOLID STATE COMMUNICATIONS | 1992年 / 81卷 / 09期

关键词：

D O I：

10.1016/0038-1098(92)90787-A

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have found that ferroelastic Pb3(PO4)2 crystal exhibits pseudoelasticity and shape-memory effect which have been commonly observed in b.c.c. based alloys. Single crystals of Pb3(PO4)2 are observed to be deformed reversibly beyond ordinary elastic limit of ionic materials under the application of stress of specific type. The large deformation was found to be realized by the change in domain structure associated with the variants of the ferroelastic phase. Effective elastic constant (pseudoelastic constant) of Pb3(PO4)2 determined from the measurement of stress-strain curve of a bulk sample was found to be 10(-3) times smaller than the intrinsic elastic constant of this material. By some aging treatment, the bistable state of domain structure was realized, which is interpreted to be a kind of two-way shape memory effect.

引用

页码：777 / 780

页数：4

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