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@ARTICLE{Bouaziz:1025385,
author = {Bouaziz, Juba and Patrick, Christopher E. and Staunton,
Julie B.},
title = {{C}rucial role of {F}e in determining the hard magnetic
properties of {N}d 2 {F}e 14 {B}},
journal = {Physical review / B},
volume = {107},
number = {2},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2024-02848},
pages = {L020401},
year = {2023},
abstract = {Nd2Fe14B's unsurpassed, hard magnetic properties for a wide
range of temperatures result from a combination of a large
volume magnetization from Fe and a strong single-ion
anisotropy from Nd. Here, using finite temperature
first-principles calculations, we focus on the other crucial
roles played by the Fe atoms in maintaining the magnetic
order on the Nd sublattices, and hence the large magnetic
anisotropy, and directly generating significant uniaxial
anisotropy at high temperatures. We identify effective spins
for atomistic modeling from the material's interacting
electrons and quantify pairwise and higher order,
nonpairwise magnetic interactions among them. We find the Nd
spins couple most strongly to spins on sites belonging to
two specific Fe sublattices: 8j1 and 8j2. Moreover, the Fe
8j1 sublattice also provides the electronic origin of the
unusual, nonmonotonic temperature dependence of the
anisotropy of Y2Fe14B. Our work provides atomic-level
resolution of the properties of this fascinating magnetic
material.},
cin = {PGI-1 / IAS-1},
ddc = {530},
cid = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406},
pnm = {5211 - Topological Matter (POF4-521)},
pid = {G:(DE-HGF)POF4-5211},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000922182700004},
doi = {10.1103/PhysRevB.107.L020401},
url = {https://juser.fz-juelich.de/record/1025385},
}