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Enhancing magnetic anisotropy and stability of α′′-Fe16N2 phase by Co and V co-substitution

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Abstract
Employing first-principles density functional calculations, we investigate critical effects of V and Co co-substitution on the structural stability and intrinsic magnetic properties of α′′-phase Fe16N2. We demonstrate that only 1 or 2V substitutes per formula unit stabilize the α′′ phase and enhance uniaxial magnetic anisotropy (Ku) up to 1.1 MJ m?3, which is nearly 2 times that of 0.6 MJ m?3 in α′′-Fe16N2. It is further predicted that Ku can even reach up to 1.8 MJ m?3 in Fe12V2Co2N2 with good stability. These results provide an instructive guideline for simultaneous enhancement of the structural stability and energy product in 3d-only permanent magnets.
Author(s)
T. Ochirkhuyag홍순철Dorj Odkhuu
Issued Date
2021
Type
Article
Keyword
Permanent magnetFe16N2Rare-earth freeMagnetic AnisotropyFirst-principles Calculation
DOI
10.1063/9.0000068
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9494
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_doaj_primary_oai_doaj_org_article_e72e83c46e234c22953121bf534e9caa&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Enhancing%20magnetic%20anisotropy%20and%20stability%20of%20%CE%B1%E2%80%B2%E2%80%B2-Fe16N2%20phase%20by%20Co%20and%20V%20co-substitution&offset=0&pcAvailability=true
Publisher
AIP Advances
Location
미국
Language
영어
ISSN
2158-3226
Citation Volume
11
Citation Number
1
Citation Start Page
0152271
Citation End Page
0152276
Appears in Collections:
Natural Science > Physics
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