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@ARTICLE{Lan:907452,
author = {Lan, Qianqian and Kovács, András and Caron, Jan and Du,
Hongchu and Song, Dongsheng and Dasari, Sriswaroop and
Gwalani, Bharat and Chaudhary, Varun and Ramanujan, Raju V.
and Banerjee, Rajarshi and Dunin-Borkowski, Rafal E.},
title = {{H}ighly complex magnetic behavior resulting from
hierarchical phase separation in {A}l{C}o({C}r){F}e{N}i
high-entropy alloys},
journal = {iScience},
volume = {25},
number = {4},
issn = {2589-0042},
address = {St. Louis},
publisher = {Elsevier},
reportid = {FZJ-2022-02044},
pages = {104047 -},
year = {2022},
abstract = {Magnetic high-entropy alloys (HEAs) are a new category of
high-performance magnetic materials, with multicomponent
concentrated compositions and complex multi-phase
structures. Although there have been numerous reports of
their interesting magnetic properties, there is very limited
understanding about the interplay between their hierarchical
multi-phase structures and the resulting magnetic behavior.
We reveal for the first time the influence of a
hierarchically decomposed B2 + A2 structure in an
AlCo0.5Cr0.5FeNi HEA on the formation of magnetic vortex
states within individual A2 (disordered BCC) precipitates,
which are distributed in an ordered B2 matrix that is weakly
ferromagnetic. Non-magnetic or weakly ferromagnetic B2
precipitates in large magnetic domains of the A2 phase, and
strongly magnetic Fe-Co-rich interphase A2 regions, are also
observed. These results provide important insight into the
origin of coercivity in this HEA, which can be attributed to
a complex magnetization process that includes the successive
reversal of magnetic vortices.},
cin = {ER-C-1},
ddc = {050},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {5351 - Platform for Correlative, In Situ and Operando
Characterization (POF4-535) / 5353 - Understanding the
Structural and Functional Behavior of Solid State Systems
(POF4-535) / 3D MAGiC - Three-dimensional magnetization
textures: Discovery and control on the nanoscale (856538) /
ESTEEM3 - Enabling Science and Technology through European
Electron Microscopy (823717) / DARPA, Phase 2 - Defense
Advanced Research Projects Agency Manipulation of magnetic
skyrmions for logicin- memory applications (Z1422.01.18) /
DFG project 405553726 - TRR 270: Hysterese-Design
magnetischer Materialien für effiziente Energieumwandlung
(405553726)},
pid = {G:(DE-HGF)POF4-5351 / G:(DE-HGF)POF4-5353 /
G:(EU-Grant)856538 / G:(EU-Grant)823717 /
G:(DE-Juel-1)Z1422.01.18 / G:(GEPRIS)405553726},
typ = {PUB:(DE-HGF)16},
pubmed = {35359811},
UT = {WOS:000819870200005},
doi = {10.1016/j.isci.2022.104047},
url = {https://juser.fz-juelich.de/record/907452},
}