Phase stability and magnetic behavior of FeCrCoNiGe high-entropy alloy

We report an alternative FeCrCoNiGe magnetic material based on FeCrCoNi high-entropy alloy with Curie point far below the room temperature. Investigations are done using first-principles calculations and key experimental measurements. Results show that the equimolar FeCrCoNiGe system is decomposed i...

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Published inApplied physics letters Vol. 107; no. 25
Main Authors Huang, Shuo, Vida, Ádám, Molnár, Dávid, Kádas, Krisztina, Varga, Lajos Károly, Holmström, Erik, Vitos, Levente
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 21.12.2015
Subjects
Applied physics
Curie temperature
Ferromagnetism
First principles
High entropy alloys
Magnetic materials
Magnetic properties
Phase stability
Solid solutions
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Summary:We report an alternative FeCrCoNiGe magnetic material based on FeCrCoNi high-entropy alloy with Curie point far below the room temperature. Investigations are done using first-principles calculations and key experimental measurements. Results show that the equimolar FeCrCoNiGe system is decomposed into a mixture of face-centered cubic and body-centered cubic solid solution phases. The increased stability of the ferromagnetic order in the as-cast FeCrCoNiGe composite, with measured Curie temperature of 640 K, is explained using the exchange interactions.
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content type line 14
ISSN:0003-6951
1077-3118
1077-3118
DOI:10.1063/1.4938398