Tuning of Magnetic Properties of Ni-Mn-Ga Glass-Coated Microwires

被引：4

作者：

Zhukova, Valentina ^{[1
,2
]}

Ipatov, Mihail ^{[1
,2
]}

Jose del Val, Juan ^{[1
]}

Granovsky, Alexandr ^{[3
]}

Zhukov, Arcady ^{[1
,2
,4
]}

机构：

[1] Univ Basque Country, UPV EHU, Fac Quim, Dept Fis Mater, San Sebastian 20018, Spain

[2] Univ Basque Country, UPV EHU, EUPDS, Dept Fis Aplicada, San Sebastian 20018, Spain

[3] Lomonosov Moscow State Univ, Fac Phys, Moscow 11991, Russia

[4] Basque Fdn Sci, Ikerbasque, Bilbao 48011, Spain

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2018年 / 54卷 / 06期

关键词：

Heusler alloys glass-coated microwires; magnetic properties; magnetic refrigeration; HEUSLER-TYPE MICROWIRES; TRANSFORMATION BEHAVIOR; MECHANICAL-PROPERTIES; FE-PT; COERCIVITY; ALLOYS; MELT;

D O I：

10.1109/TMAG.2018.2813003

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have observed that annealing conditions strongly affect the temperature dependence of magnetization and Curie temperature of NiMnGa glass-coated microwires. After long (6 h) annealing of the microwires at 773 K, a ferromagnetic ordering is obtained with T-c approximate to 300 K, which is beneficial for a magnetic solid-state refrigeration. The annealed samples also exhibit the exchange bias effect at low temperatures. The decomposition of GaNi phase and the precipitation of Ni2MnGa phase after the annealing can be responsible for the magnetic hardening and the change of the Curie temperature.

引用

页数：4

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