Strong magneto-volume effects and hysteresis reduction in the In-doped (NiCo)2MnGa Heusler alloys

被引：3

作者：

Kamarad, J. ^{[1
]}

Fabbrici, S. ^{[2
,3
]}

Kastil, J. ^{[1
]}

Misek, M. ^{[1
]}

Cabassi, R. ^{[2
]}

Cugini, F. ^{[4
]}

Albertini, F. ^{[2
]}

Arnold, Z. ^{[1
]}

机构：

[1] Inst Phys ASCR, Vvi, Na Slovance 2, Prague 18221 8, Czech Republic

[2] IMEM CNR, Parco Area Sci 37-A, I-43124 Parma, Italy

[3] MIST ER Lab, Via Piero Gobetti 101, I-40129 Bologna, Italy

[4] Univ Parma, Parco Area Sci 7-A, I-43124 Parma, Italy

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 685卷

关键词：

Heusler alloys; Martensitic transformation; Magnetic properties; High pressure; HYDROSTATIC-PRESSURE; CURIE-TEMPERATURE; CO; NI2MNGA; MAGNETIZATION; TRANSITIONS; GA;

D O I：

10.1016/j.jallcom.2016.05.240

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the effect of high hydrostatic pressure (up to 1.1 GPa) on magnetization and critical temperatures of the magnetic and magneto-structural transitions in the off-stoichiometric In-doped (Ni, Co)(2)Mn(Ga, In) alloys. The magnetization M-M(5 K) of their martensitic phase significantly decreases under pressure and the value of dlnMM(5 K)/dP = -55 x 10(-3) GPa(-1) was observed in the Ni41Co9Mn33Ga14In3 alloy. The temperature of structural transition of the alloys from martensite to austenite, TM-A, shows a strong dependence on both pressure (dT(M-A)/dP = 60 K/GPa) and magnetic field. The complex mutual dependence of TM-A to both pressure and magnetic field produces a remarkable reduction of the transformation hysteresis. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：142 / 146

页数：5

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