Hydrostatic pressure tuned magneto-structural transition and occurrence of pressure induced exchange bias effect in Mn0.85Fe0.15NiGe alloy

被引：18
作者：
Dutta, P. [1 ]
Pramanick, S. [2 ]
Das, D. [1 ]
Chatterjee, S. [1 ]
机构：
[1] Kolkata Ctr, UGC DAE Consortium Sci Res, Sect 3, LB-8, Kolkata 700098, India
[2] Indian Assoc Cultivat Sci, Dept Solid State Phys, 2 A&B Raja SC Mullick Rd, Kolkata 700032, India
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2016年 / 49卷 / 38期
关键词：
martensitic transformation; magnetocaloric effect; hydrostatic pressure effect; exchange bias; MNNIGE; COMPOUND; CRYSTAL;
D O I：
10.1088/0022-3727/49/38/385001
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic and magneto-functional behavior of a Fe-doped MnNiGe alloy with nominal composition Mn0.85Fe0.15NiGe have been investigated in ambient as well as in high pressure conditions. The alloy undergoes a first order martensitic phase transition (MPT) around 200 K and also shows a large conventional magnetocaloric effect (MCE) (Delta S similar to-21 J kg(-1) K-1 for magnetic field (H) changing from 0-50 kOe) around the transition in ambient conditions. The application of external hydrostatic pressure (P) results in a shift in MPT towards the lower temperature and a clear decrease in the saturation moment of the alloy at 5 K. The peak value of MCE is also found to decrease with increasing external P (similar to 18 J kg(-1) K-1 decrease in Delta S has been observed for P = 12.5 kbar). The most interesting observation is the occurrence of the exchange bias effect (EBE) on application of external P. The competing ferromagnetic and antiferromagnetic interaction in the presence of external P plays the pivotal role towards the observation of P induced EBE.
引用
收藏
页数：6
相关论文
共 28 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]   Pressure-tuned magnetocaloric effect in Mn0.93Cr0.07CoGe [J].
Caron, L. ;
Trung, N. T. ;
Bruck, E. .
PHYSICAL REVIEW B, 2011, 84 (02)
[4]   Reentrant-spin-glass state in Ni2Mn1.36Sn0.64 shape-memory alloy [J].
Chatterjee, S. ;
Giri, S. ;
De, S. K. ;
Majumdar, S. .
PHYSICAL REVIEW B, 2009, 79 (09)
[5]   Magnetocaloric effect around a magnetic phase transition [J].
de Oliveira, N. A. ;
von Ranke, P. J. .
PHYSICAL REVIEW B, 2008, 77 (21)
[6]   Exploring the details of the martensitic phase transition and magnetocaloric effect of CoMnGe0.95Ga0.05 by synchrotron and magnetic measurements [J].
Dincer, I. ;
Yuzuak, E. ;
Durak, G. ;
Elerman, Y. ;
Bell, A. M. T. ;
Ehrenberg, H. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 540 :236-240
[7]   Anomalous magnetotransport behavior in Fe-doped MnNiGe alloys [J].
Dutta, P. ;
Pramanick, S. ;
Singh, Vijay ;
Major, Dan Thomas ;
Das, D. ;
Chatterjee, S. .
PHYSICAL REVIEW B, 2016, 93 (13)
[8]   Hydrostatic pressure effect on the magnetocaloric behavior of Ga-doped MnNiGe magnetic equiatomic alloy [J].
Dutta, P. ;
Das, D. ;
Chatterjee, S. ;
Pramanick, S. ;
Majumdar, S. .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2016, 49 (12)
[9]   Multifunctional behavior of Fe-doped MnNiGe magnetic equiatomic compound [J].
Dutta, P. ;
Pramanick, S. ;
Majumdar, S. ;
Das, D. ;
Chatterjee, S. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2015, 395 :312-315
[10]   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
123