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@ARTICLE{Mandal:585153,
      author       = {Mandal, Shuvam and Panigrahi, Ajit and Rath, Ashutosh and
                      Bönisch, Matthias and Sengupta, Pradyut and Debata,
                      Mayadhar and Basu, Suddhasatwa},
      title        = {{F}ormation of {L}1$_0$ {O}rdering in {F}e{N}i by
                      {M}echanical {A}lloying and {F}ield-{A}ssisted {H}eat
                      {T}reatment: {S}ynchrotron {XRD} {S}tudies},
      journal      = {ACS omega},
      volume       = {8},
      number       = {15},
      issn         = {2470-1343},
      address      = {Washington, DC},
      publisher    = {ACS Publications},
      reportid     = {PUBDB-2023-03426},
      pages        = {13690 - 13701},
      year         = {2023},
      abstract     = {L10-ordered FeNi, tetrataenite, found naturally in
                      meteorites is a predilection for next-generation rare-earth
                      free permanent magnetic materials. However, the synthesis of
                      this phase remains unattainable in an industrially relevant
                      time frame due to the sluggish diffusion of Fe and Ni near
                      the order–disorder temperature (593 K) of L1$_0$ FeNi. The
                      present work describes the synthesis of ordered L1$_0$ FeNi
                      from elemental Fe and Ni powders by mechanical alloying up
                      to 12 h and subsequent heat treatment at 623 K for 1000 h
                      without a magnetic field and for 4 h in the presence of 1.5
                      T magnetic field. Also, to address the ambiguity of L1$_0$
                      phase identification caused by the low difference in the
                      X-ray scattering factor of Fe and Ni, synchrotron-based
                      X-ray diffraction is employed, which reveals that 6 h
                      milling is sufficient to induce L1$_0$ FeNi formation.
                      Further milling for 12 h is done to achieve a chemically
                      homogeneous powder. The phase fraction of L1$_0$-ordered
                      FeNi is quantified to ∼9 wt \% for 12 h milled FeNi, which
                      increases to ∼15 wt \% after heat treatment. Heat
                      treatment of the milled powder in a magnetic field increases
                      the long-range order parameter (S) from 0.18 to 0.30.
                      Further, the study of magnetic properties reveals a decrease
                      in magnetic saturation and a slight increase in coercivity
                      with the increase in milling duration. At the same time,
                      heat treatment in the magnetic field shows a considerable
                      increase in coercivity.},
      cin          = {DOOR ; HAS-User / Hereon},
      ddc          = {660},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)Hereon-20210428},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20190769
                      EC (I-20190769-EC)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20190769-EC},
      experiment   = {EXP:(DE-H253)P-P07-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {37091413},
      UT           = {WOS:000969765000001},
      doi          = {10.1021/acsomega.2c07869},
      url          = {https://bib-pubdb1.desy.de/record/585153},
}