Structure and properties of the ferromagnetic shape-memory alloy Co50Ni20Ga30-xSix

被引：1

作者：

Dai Xue-Fang ^{[1
]}

Sun Chen-Guang ^{[1
]}

Qu Jing-Ping ^{[1
]}

Li Yang-Xian ^{[1
]}

Zhu Wei ^{[2
]}

Chen Jing-Lan ^{[2
]}

Wu Guang-Heng ^{[2
]}

机构：

[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China

来源：

ACTA PHYSICA SINICA | 2009年 / 58卷 / 12期

基金：

中国国家自然科学基金;

关键词：

ferromagnetic shape-memory alloy; martensitic transformation; CoNiGaSi alloy; MARTENSITIC-TRANSFORMATION; MAGNETIC-PROPERTIES; TRANSITION;

D O I：

10.7498/aps.58.8602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The structure, martensitic transformation and magnetism have been studied in the CoNiGa alloys after certain Ga substrated by Si. From the experimental results, we found that the alloy can form pure body-centered cubic structure accompanied by good thermal martensitic transformation when the atom ratio of Si lies in the range 0-10%. It can be concluded from further analysis that it is not only the radius of the doped atom but also the radius ratio of the doped atom and the host atom that affect the stability of the austenite. At the same time, it can be found that the Curie temperature and the saturated magnetization decrease with increasing Si. But the anisotropy of the martensite increases with the increasing Si, which is of significance for obtaining large magnetically-induced-strain.

引用

页码：8602 / 8606

页数：5

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