Giant inverse magnetocaloric effect near room temperature in Co substituted NiMnSb Heusler alloys

被引：111

作者：

Nayak, Ajaya K. ^{[1
]}

Suresh, K. G. ^{[1
]}

Nigam, A. K. ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Phys, Magnet Mat Lab, Bombay 400076, Maharashtra, India

[2] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2009年 / 42卷 / 03期

关键词：

D O I：

10.1088/0022-3727/42/3/035009

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of Co on the structural, magnetic and magnetocaloric effect (MCE) of Ni50-x CoxMn38Sb12 (x = 0, 2, 3, 4, 5) Heusler alloys was studied. Using x-ray diffraction, we show the evolution of the martensitic phase from the austenite phase. The martensitic transition temperature is found to decrease monotonically with Co concentration. Remarkable enhancement of MCE is observed near room temperature upon Co substitution. The maximum magnetic entropy change of 34 J kg(-1) K-1 was achieved for x = 5 at 262K in a field of 50 kOe and a value of 29 J kg(-1) K-1 was found near room temperature. The significant increase in the magnetization with large magneto-structural coupling associated with the reverse martensitic transition is responsible for the giant MCE in these compounds.

引用

页数：4

共 21 条

[1] Tailoring magnetic and magnetocaloric properties of martensitic transitions in ferromagnetic Heusler alloys [J].

Aksoy, Seda ;

Krenke, Thorsten ;

Acet, Mehmet ;

Wassermann, Eberhard F. ;

Moya, Xavier ;

Manosa, Lluis ;

Planes, Antoni .

APPLIED PHYSICS LETTERS, 2007, 91 (24)

[2] Phase transition processes and magnetocaloric effect in Ni2.15Mn0.85-xCoxGa alloys [J].

Bao, B. ;

Long, Y. ;

Duan, J. F. ;

Shi, P. J. ;

Wu, G. H. ;

Ye, R. C. ;

Chang, Y. Q. ;

Zhang, J. ;

Rong, C. B. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (07)

[3] Room temperature magnetocaloric effect in Ni-Mn-In [J].

Bhobe, P. A. ;

Priolkar, K. R. ;

Nigam, A. K. .

APPLIED PHYSICS LETTERS, 2007, 91 (24)

[4] Magneto-structural instability in Ni2Mn1.4Sb0.6 alloy [J].

Chatterjee, S. ;

Giri, S. ;

Majumdar, S. ;

Deb, A. K. ;

De, S. K. ;

Hardy, V. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2007, 19 (34)

[5] Ambient pressure colossal magnetocaloric effect tuned by composition in Mn1-xFexAs [J].

De Campos, Ariana ;

Rocco, Daniel L. ;

Carvalho, Alexandre Magnus G. ;

Caron, Luana ;

Coelho, Adelino A. ;

Gama, Sergio ;

Da Silva, Luzeli M. ;

Gandra, Flavio C. G. ;

Dos Santos, Adenilson O. ;

Cardoso, Lisandro P. ;

Von Ranke, Pedro J. ;

De Oliveira, Nilson A. .

NATURE MATERIALS, 2006, 5 (10) :802-804

[6] Magnetocaloric effect and magnetic-field-induced shape recovery effect at room temperature in ferromagnetic Heusler alloy Ni-Mn-Sb [J].

Du, J. ;

Zheng, Q. ;

Ren, W. J. ;

Feng, W. J. ;

Liu, X. G. ;

Zhang, Z. D. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2007, 40 (18) :5523-5526

[7] Large magnetocaloric effect in La(FexSi1-x)13 itinerant-electron metamagnetic compounds [J].

Fujieda, S ;

Fujita, A ;

Fukamichi, K .

APPLIED PHYSICS LETTERS, 2002, 81 (07) :1276-1278

[8] Inverse magnetocaloric effect in ferromagnetic Ni50Mn37+xSb13-x Heusler alloys [J].

Khan, Mahmud ;

Ali, Naushad ;

Stadler, Shane .

JOURNAL OF APPLIED PHYSICS, 2007, 101 (05)

[9] Magnetostructural phase transitions in Ni50Mn25+xSb25-x heusler alloys [J].

Khan, Mahmud ;

Dubenko, Igor ;

Stadler, Shane ;

Ali, Naushad .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (23)

[10] Martensitic transitions and the nature of ferromagnetism in the austenitic and martensitic states of Ni-Mn-Sn alloys -: art. no. 014412 [J].

Krenke, T ;

Acet, M ;

Wassermann, EF ;

Moya, X ;

Mañosa, L ;

Planes, A .

PHYSICAL REVIEW B, 2005, 72 (01)

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