The magnetostructural transformation and magnetocaloric effect in Co-doped MnNiGe1.05 alloys

被引：61
作者：
Zhang, Chengliang
Wang, Dunhui [1 ]
Cao, Qingqi
Ma, Shengcan
Xuan, Haicheng
Du, Youwei
机构：
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 20期
基金：
中国国家自然科学基金;
关键词：
TRANSITION; PRESSURE; CRYSTAL;
D O I：
10.1088/0022-3727/43/20/205003
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A series of MnNi1-xCoxGe1.05 (x = 0, 0.03, 0.05, 0.07, 0.09, and 0.11) alloys were prepared by the arc-melting method. With increasing content of Co, a first-order magnetostructural transformation between the antiferromagnetic TiNiSi-type phase and the ferromagnetic Ni2In-type phase was observed. A magnetic and crystallographic phase diagram for MnNi1-xCoxGe1.05 alloys was proposed in this paper. Owing to the abrupt and large jump of magnetization around the magnetostructural transformation, MnNi1-xCoxGe1.05 (x = 0.07, 0.09, 0.11) alloys show large and positive magnetic entropy changes at relatively low field.
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页数：5
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共 27 条
[1]   COUPLED NATURE OF MAGNETIC AND STRUCTURAL TRANSITION IN MNNIGE UNDER PRESSURE [J].
ANZAI, S ;
OZAWA, K .
PHYSICAL REVIEW B, 1978, 18 (05) :2173-2178
[2]   CRYSTAL AND MAGNETIC-STRUCTURE OF NIMNGE [J].
BAZELA, W ;
SZYTULA, A ;
TODOROVIC, J ;
TOMKOWICZ, Z ;
ZIEBA, A .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1976, 38 (02) :721-729
[3]   Thermomagnetic irreversibility in Ni2Mn1.36Sn0.64 shape-memory alloy [J].
Chatterjee, S. ;
Giri, S. ;
Majumdar, S. ;
De, S. K. .
PHYSICAL REVIEW B, 2008, 77 (22)
[4]   ON THE CRYSTAL-STRUCTURE AND MAGNETIC-PROPERTIES OF MNNIGE [J].
FJELLVAG, H ;
ANDRESEN, AF .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1985, 50 (03) :291-297
[5]   A Finemet-type alloy as a low-cost candidate for high-temperature magnetic refrigeration -: art. no. 042505 [J].
Franco, V ;
Blázquez, JS ;
Conde, CF ;
Conde, A .
APPLIED PHYSICS LETTERS, 2006, 88 (04) :1-3
[6]   Phase diagram and magnetocaloric effect of CoMnGe1-xSnx alloys [J].
Hamer, J. B. A. ;
Daou, R. ;
Oezcan, S. ;
Mathur, N. D. ;
Fray, D. J. ;
Sandeman, K. G. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2009, 321 (21) :3535-3540
[7]   Magnetic entropy change in Ni51.5Mn22.7Ga25.8 alloy [J].
Hu, FX ;
Shen, BG ;
Sun, JR .
APPLIED PHYSICS LETTERS, 2000, 76 (23) :3460-3462
[8]   Magnetic-field-induced shape recovery by reverse phase transformation [J].
Kainuma, R ;
Imano, Y ;
Ito, W ;
Sutou, Y ;
Morito, H ;
Okamoto, S ;
Kitakami, O ;
Oikawa, K ;
Fujita, A ;
Kanomata, T ;
Ishida, K .
NATURE, 2006, 439 (7079) :957-960
[9]   Observation of field-induced reverse transformation in ferromagnetic shape memory alloy Ni50Mn36Sn14 [J].
Koyama, K ;
Watanabe, K ;
Kanomata, T ;
Kainuma, R ;
Oikawa, K ;
Ishida, K .
APPLIED PHYSICS LETTERS, 2006, 88 (13)
[10]   Field-induced martensitic transformation in new ferromagnetic shape memory compound Mn1.07Co0.92Ge [J].
Koyama, K ;
Sakai, M ;
Kanomata, T ;
Watanabe, K .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2004, 43 (12) :8036-8039
123