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000907452 1001_ $$0P:(DE-Juel1)173944$$aLan, Qianqian$$b0$$eCorresponding author$$ufzj
000907452 245__ $$aHighly complex magnetic behavior resulting from hierarchical phase separation in AlCo(Cr)FeNi high-entropy alloys
000907452 260__ $$aSt. Louis$$bElsevier$$c2022
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000907452 520__ $$aMagnetic 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.
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000907452 536__ $$0G:(EU-Grant)856538$$a3D MAGiC - Three-dimensional magnetization textures: Discovery and control on the nanoscale (856538)$$c856538$$fERC-2019-SyG$$x2
000907452 536__ $$0G:(EU-Grant)823717$$aESTEEM3 - Enabling Science and Technology through European Electron Microscopy (823717)$$c823717$$fH2020-INFRAIA-2018-1$$x3
000907452 536__ $$0G:(DE-Juel-1)Z1422.01.18$$aDARPA, Phase 2 - Defense Advanced Research Projects Agency Manipulation of magnetic skyrmions for logicin- memory applications (Z1422.01.18)$$cZ1422.01.18$$x4
000907452 536__ $$0G:(GEPRIS)405553726$$aDFG project 405553726 - TRR 270: Hysterese-Design magnetischer Materialien für effiziente Energieumwandlung (405553726)$$c405553726$$x5
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000907452 7001_ $$0P:(DE-Juel1)144926$$aKovács, András$$b1$$eCorresponding author$$ufzj
000907452 7001_ $$0P:(DE-Juel1)157760$$aCaron, Jan$$b2
000907452 7001_ $$0P:(DE-Juel1)145710$$aDu, Hongchu$$b3$$ufzj
000907452 7001_ $$0P:(DE-Juel1)176812$$aSong, Dongsheng$$b4
000907452 7001_ $$0P:(DE-HGF)0$$aDasari, Sriswaroop$$b5
000907452 7001_ $$0P:(DE-HGF)0$$aGwalani, Bharat$$b6
000907452 7001_ $$0P:(DE-HGF)0$$aChaudhary, Varun$$b7
000907452 7001_ $$0P:(DE-HGF)0$$aRamanujan, Raju V.$$b8
000907452 7001_ $$00000-0003-4703-7030$$aBanerjee, Rajarshi$$b9
000907452 7001_ $$0P:(DE-Juel1)144121$$aDunin-Borkowski, Rafal E.$$b10$$ufzj
000907452 773__ $$0PERI:(DE-600)2927064-9$$a10.1016/j.isci.2022.104047$$gVol. 25, no. 4, p. 104047 -$$n4$$p104047 -$$tiScience$$v25$$x2589-0042$$y2022
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