Hysteresis effects in the inverse magnetocaloric effect in martensitic Ni-Mn-In and Ni-Mn-Sn

被引：89

作者：

Titov, I. ^{[1
]}

Acet, M. ^{[1
]}

Farle, M. ^{[1
]}

Gonzalez-Alonso, D. ^{[2
]}

Manosa, L. ^{[2
]}

Planes, A. ^{[2
]}

Krenke, T. ^{[3
]}

机构：

[1] Univ Duisburg Essen, D-47048 Duisburg, Germany

[2] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain

[3] Thyssenkrupp Elect Steel GmbH, D-45881 Gelsenkirchen, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 112卷 / 07期

关键词：

Tin alloys - Magnetocaloric effects - Manganese alloys - Martensitic transformations - Ternary alloys - Nickel alloys - Shape memory effect;

D O I：

10.1063/1.4757425

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The presence of a large inverse magnetocaloric effect around the martensitic transformation in Ni-Mn-Sn and Ni-Mn-In alloys is expected to lead to substantial cooling on applying a magnetic field. However, the occurrence of hysteresis around the transition causes limitations on adiabatic temperature-changes. We study the adiabatic temperature-change in both systems in relation to the hysteresis effects. Ni-Mn-In, having a relatively narrower hysteresis and a greater shift of the characteristic transition temperatures with applied field with respect to Ni-Mn-Sn, shows reversibility in the adiabatic-temperature change related to the inverse magnetocaloric effect when the state of the system is cycled within a minor transitional hysteresis loop. Ni-Mn-Sn does not show reversibility in the inverse magnetocaloric effect under cycling-fields up to 5T. The reversibility in the adiabatic temperature-change is directly related to the reversibility in the relative amount of austenite and martensite in the sample when the field is cycled. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4757425]

引用

页数：5

共 14 条

[1]

Acet M, 2011, HBK MAGN MAT, V19, P231, DOI 10.1016/S1567-2719(11)19004-6

[2] Thermodynamic aspects of first-order phase transformations with hysteresis in magnetic materials [J].