TY - JOUR
T1 - The effect of chemical disorder on magnetic properties of FeNi and Fe2Ni2N alloys
AU - Qiao, Zijian
AU - Tsujikawa, Masahito
AU - Shirai, Masafumi
N1 - Funding Information:
This work was supported in part by MEXT as “WISE Program for Artificial Intelligence Electronics by Tohoku University”. We are grateful to A. Sakuma and K. Ito for their valuable discussions.
Publisher Copyright:
© 2023
PY - 2023/2/15
Y1 - 2023/2/15
N2 - The dependency of magnetic anisotropy constant Ku on the degree of order for L10-ordered FeNi alloys and tetragonally ordered Fe2Ni2N alloys has been investigated using first-principles calculations with special quasi-random structure. The Ku increases with increasing ordering parameter S for both alloys and the Ku of Fe2Ni2N exceeds that of FeNi in the region above S = 0.5, and more than 1 MJ/m3 of Ku can be expected when the S is 0.67 or higher, reaching more than 2 MJ/m3 for fully ordered Fe2Ni2N. We also investigated the Ku of tetragonally ordered Fe2Ni2N for the tetragonal distortion, and found that the Ku is increased with in-plane compressive stain and reaches 2.2 MJ/m3 with a 1 % compression of in-plane lattice parameter.
AB - The dependency of magnetic anisotropy constant Ku on the degree of order for L10-ordered FeNi alloys and tetragonally ordered Fe2Ni2N alloys has been investigated using first-principles calculations with special quasi-random structure. The Ku increases with increasing ordering parameter S for both alloys and the Ku of Fe2Ni2N exceeds that of FeNi in the region above S = 0.5, and more than 1 MJ/m3 of Ku can be expected when the S is 0.67 or higher, reaching more than 2 MJ/m3 for fully ordered Fe2Ni2N. We also investigated the Ku of tetragonally ordered Fe2Ni2N for the tetragonal distortion, and found that the Ku is increased with in-plane compressive stain and reaches 2.2 MJ/m3 with a 1 % compression of in-plane lattice parameter.
UR - http://www.scopus.com/inward/record.url?scp=85146613790&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85146613790&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2023.170362
DO - 10.1016/j.jmmm.2023.170362
M3 - Article
AN - SCOPUS:85146613790
SN - 0304-8853
VL - 568
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
M1 - 170362
ER -