Magnetostructural phase transitions and large magnetic entropy changes in Ag-doped Mn1-xAgx,CoGe intermetallic compounds

被引：9

作者：

Aryal, Anil ^{[1
]}

Pandey, Sudip ^{[1
]}

Dubenko, Igor ^{[1
]}

Mazumdar, Dipanjan ^{[1
]}

Stadler, Shane ^{[2
]}

Ali, Naushad ^{[1
]}

机构：

[1] Southern Illinois Univ, Dept Phys, Carbondale, IL 62901 USA

[2] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

MRS COMMUNICATIONS | 2019年 / 9卷 / 01期

关键词：

CRYSTAL; COMNGE;

D O I：

10.1557/mrc.2018.228

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of Ag-doping on the crystallographic structure, magnetic properties, and magnetocaloric effects of Mn1-xAgx,CoGe (0.01 <= x <= 0.10) is reported. A transformation of crystal structure from orthorhombic to hexagonal was observed at room temperature. Doping Ag in Mn sites results in a first-order magnetostructural transition near room temperature. A Curie-temperature window of 90 K was obtained between the Curie temperatures of the austenite (Ni(2)ln-type) and martensite (TiNiSi-type) phases. Large magnetic entropy change values of similar to 22.0 and 9.4 J/kg/K. and refrigerant capacity of 308 and 272 J/kg, were found for x= 0.06 and 0.05. respectively. for mu(0)Delta H= 5 T.

引用

页码：315 / 320

页数：6

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