Inducing strong magnetism in Cr20Mn20Fe20Co20Ni20 high-entropy alloys by exploiting its anti-Invar property

被引：15
|
作者：
Acet, M. [1 ]
机构：
[1] Univ Duisburg Essen, Expt Phys AG Farle, D-47048 Duisburg, Germany
来源：
AIP ADVANCES | 2019年 / 9卷 / 09期
关键词：
PHASE;
D O I：
10.1063/1.5120251
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The equiatomic high-entropy alloy Cr20Mn20Fe20Co20Ni20 high-entropy alloy has a valence-electron-concentration of 8 electrons/atom which is equivalent to that of Fe. The alloy being FCC is therefore electronically equivalent to FCC-Fe. We show through the thermal expansion properties that the alloy carries similar anti-Invar properties as FCC-Fe, but unlike FCC-Fe it is stable throughout its solid-state temperature-range. Therefore, by exploiting the anti-Invar property and expanding the lattice of the alloy by introducing interstitial carbon, we make Cr20Mn20Fe20Co20Ni20 ferromagnetic with a Curie temperature lying above room temperature.
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页数：4
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