Effects of partial substitution of Co on magnetocrystalline anisotropy and magnetic-field-induced strain in NiFeGa alloys

被引：39
作者：
Morito, H
Oikawa, K
Fujita, A
Fukamichi, K
Kainuma, R
Ishida, K
Takagi, T
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan
[2] Natl Inst Adv Ind Sci & Technol, Sendai, Miyagi 9838551, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 290卷
关键词：
Curie temperature; phase transition-martensitic-like; anisotropy-magnetocrystalline; magnetostriction;
D O I：
10.1016/j.jmmm.2004.11.392
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of partial substitution of Co on magnetocrystalline anisotropy and magnetic-field-induced strain (MFIS) in Ni-Fe-Ga alloys have been investigated. To obtain a single-variant state in the martensite phase, uniaxial compressive stresses were applied to the single-crystalline specimen. The Curie temperature T-C is increased up to 405 K by a partial substitution of 6 at% Co. The single-variant martensite phase in the Ni49Fe18Ga27Co6 alloy exhibits a large value of magnetocrystalline anisotropy constant K = 1.2 x 10(6) erg/cm(3) at 300 K. Furthermore, the magnitude of the MFIS is enhanced in a wide range of temperature. Therefore, the increase of T-C by the substitution of Co effectively improves the MFIS. © 2004 Elsevier B.V. All rights reserved.
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收藏
页码：850 / 853
页数：4
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