Stress-assisted magnetic-field-induced strain in Ni-Fe-Ga-Co ferromagnetic shape memory alloys

被引：63

作者：

Morito, H.

Fujita, A.

Oikawa, K.

Ishida, K.

Fukamichi, K.

Kainuma, R.

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 06期

关键词：

D O I：

10.1063/1.2450667

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To obtain a large strain for Ni-Fe-Ga ferromagnetic shape memory alloys, the Curie temperature was increased by adding Co, and the magnetic-field-induced strain (MFIS) has been investigated under static stresses. The magnetocrystalline anisotropy constant K is increased by the addition of Co, and Ni49Fe18Ga27Co6 alloy gives a relatively large value of 1.15x10(6) erg/cm(3) at 300 K. From the stress-strain curves for this alloy, the twinning stress is estimated to be 8-9 MPa. Consequently, the Ni49Fe18Ga27Co6 alloy exhibits a large MFIS of about 8.5% at room temperature under a static compressive stress of about 8 MPa. (c) 2007 American Institute of Physics.

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页数：3

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共 22 条

[11] Magnetic-field-induced strain of Fe-Ni-Ga in single-variant state [J].

Morito, H ;

Fujita, A ;

Fukamichi, K ;

Kainuma, R ;

Ishida, K ;

Oikawa, K .

APPLIED PHYSICS LETTERS, 2003, 83 (24) :4993-4995

[12] Model for strain and magnetization in magnetic shape-memory alloys [J].

O'Handley, RC .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (06) :3263-3270

[13] Influence of Co addition on martensitic and magnetic transitions in Ni-Fe-Ga β based shape memory alloys [J].

Oikawa, K ;

Imano, Y ;

Chernenko, VA ;

Luo, FH ;

Omori, T ;

Sutou, Y ;

Kainuma, R ;

Kanomata, T ;

Ishida, K .

MATERIALS TRANSACTIONS, 2005, 46 (03) :734-737

[14] Magnetic and martensitic phase transformations in a Ni54Ga27Fe19 alloy [J].

Oikawa, K ;

Ota, T ;

Sutou, Y ;

Ohmori, T ;

Kainuma, R ;

Ishida, K .

MATERIALS TRANSACTIONS, 2002, 43 (09) :2360-2362

[15] Phase equilibria and phase transformations in new B2-type ferromagnetic shape memory alloys of Co-Ni-Ga and Co-Ni-Al systems [J].

Oikawa, K ;

Ota, T ;

Gejima, F ;

Ohmori, T ;

Kainuma, R ;

Ishida, K .

MATERIALS TRANSACTIONS, 2001, 42 (11) :2472-2475

[16] Promising ferromagnetic Ni-Co-Al shape memory alloy system [J].

Oikawa, K ;

Wulff, L ;

Iijima, T ;

Gejima, F ;

Ohmori, T ;

Fujita, A ;

Fukamichi, K ;

Kainuma, R ;

Ishida, K .

APPLIED PHYSICS LETTERS, 2001, 79 (20) :3290-3292

[17] Magnetic and martensitic phase transitions in ferromagnetic Ni-Ga-Fe shape memory alloys [J].

Oikawa, K ;

Ota, T ;

Ohmori, T ;

Tanaka, Y ;

Morito, H ;

Fujita, A ;

Kainuma, R ;

Fukamichi, K ;

Ishida, K .

APPLIED PHYSICS LETTERS, 2002, 81 (27) :5201-5203

[18] Giant magnetic-field-induced strain in NiMnGa seven-layered martensitic phase [J].

Sozinov, A ;

Likhachev, AA ;

Lanska, N ;

Ullakko, K .

APPLIED PHYSICS LETTERS, 2002, 80 (10) :1746-1748

[19] Stress-strain characteristics in Ni-Ga-Fe ferromagnetic shape memory alloys [J].

Sutou, Y ;

Kamiya, N ;

Omori, T ;

Kainuma, R ;

Ishida, K ;

Oikawa, K .

APPLIED PHYSICS LETTERS, 2004, 84 (08) :1275-1277

[20] Large magnetic-field-induced strains in Ni2MnGa single crystals [J].

Ullakko, K ;

Huang, JK ;

Kantner, C ;

OHandley, RC ;

Kokorin, VV .

APPLIED PHYSICS LETTERS, 1996, 69 (13) :1966-1968