Composition dependence of magnetic and magnetothermal properties of Ni-Mn-Ga shape memory alloys

被引：74

作者：

Albertini, F

Canepa, F

Cirafici, S

Franceschi, EA

Napoletano, M

Paoluzi, A

Pareti, L

Solzi, M

机构：

[1] CNR, IMEM, I-43010 Parma, Italy

[2] Univ Genoa, INFM, Dipartimento Chim & Chim Ind, I-16145 Genoa, Italy

[3] Univ Parma, Dipartimento Fis, INFM, I-43100 Parma, Italy

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

ferromagnetic-shape-memory alloy; martensitic transformation; magnetocaloric effect; Ni-Mn-Ga;

D O I：

10.1016/j.jmmm.2003.12.883

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simultaneous magnetic and structural transition is found for Ni2 + xMn1-xGa at 0.18less than or equal toxless than or equal to0.2. The existence of a composition range for observing the co-occurrent transition and the composition dependence of the critical temperatures are discussed in the light of the expected difference between the Curie temperatures of the austenitic and martensitic phases. A giant magnetic entropy change is deduced for the three samples, with a maximum value of the order of \DeltaS(m)\ = 15 J/kg K for a field span of 1.8 T. (C) 2003 Elsevier B.V. All rights reserved.

引用

收藏

页码：2111 / 2112

页数：2

相关论文

共 10 条

[1]

Callen H. B., 1966, THERMODYNAMICS

[2] Ferromagnetism of thermoelastic martensites: Theory and experiment [J].

Chernenko, VA ;

L'vov, VA ;

Zagorodnyuk, SP ;

Takagi, T .

PHYSICAL REVIEW B, 2003, 67 (06)

[3] Reversible structural phase transition in Ni-Mn-Ga alloys in a magnetic field [J].

Dikshtein, IE ;

Ermakov, DI ;

Koledov, VV ;

Koledov, LV ;

Takagi, T ;

Tulaikova, AA ;

Cherechukin, AA ;

Shavrov, VG .

JETP LETTERS, 2000, 72 (07) :373-376

[4] Superhigh strains by variant reorientation in the nonmodulated ferromagnetic NiMnGa alloys [J].

Jiang, CB ;

Liang, T ;

Xu, HB ;

Zhang, M ;

Wu, GH .

APPLIED PHYSICS LETTERS, 2002, 81 (15) :2818-2820

[5] Magnetic properties of Ni2.18Mn0.82Ga Heusler alloys with a coupled magnetostructural transition -: art. no. 092410 [J].

Khovailo, VV ;

Takagi, T ;

Tani, J ;

Levitin, RZ ;

Cherechukin, AA ;

Matsumoto, M ;

Note, R .

PHYSICAL REVIEW B, 2002, 65 (09) :1-4

[6] Giant entropy change at the co-occurrence of structural and magnetic transitions in the Ni2.19Mn0.81Ga Heusler alloy [J].

Pareti, L ;

Solzi, M ;

Albertini, F ;

Paoluzi, A .

EUROPEAN PHYSICAL JOURNAL B, 2003, 32 (03) :303-307

[7] Some common misconceptions concerning magnetic refrigerant materials [J].

Pecharsky, VK ;

Gschneidner, KA .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (09) :4614-4622

[8] Magnetic and Magnetomechanical Properties of Ni-Mn-Ga Alloys with easy axis and easy plane of magnetization [J].

Sozinov, A ;

Likhachev, AA ;

Ullakko, K .

SMART STRUCTURES AND MATERIALS 2001: ACTIVE MATERIALS: BEHAVIOR AND MECHANICS, 2001, 4333 :189-196

[9] Transition-metal-based magnetic refrigerants for room-temperature applications [J].

Tegus, O ;

Brück, E ;

Buschow, KHJ ;

de Boer, FR .

NATURE, 2002, 415 (6868) :150-152

[10] Structural and magnetic phase transitions in shape-memory alloys Ni2+xMn1-xGa [J].

Vasil'ev, AN ;

Bozhko, AD ;

Khovailo, VV ;

Dikshtein, IE ;

Shavrov, VG ;

Buchelnikov, VD ;

Matsumoto, M ;

Suzuki, S ;

Takagi, T ;

Tani, J .

PHYSICAL REVIEW B, 1999, 59 (02) :1113-1120