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@ARTICLE{Galanakis:17872,
      author       = {Galanakis, I. and Sasioglu, E.},
      title        = {{V}ariation of the magnetic properties of {N}i2{M}n{G}a
                      {H}eusler alloy upon tetragonalization: a first-principles
                      study},
      journal      = {Journal of physics / D},
      volume       = {44},
      issn         = {0022-3727},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {PreJuSER-17872},
      pages        = {235001},
      year         = {2011},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We study the influence of the tetragonalization occurring
                      during the martensitic phase transition on the exchange
                      interactions in Ni2MnGa Heusler alloy using first-principles
                      calculations in conjunction with the frozen-magnon
                      approximation. We show that the tetragonalization alters
                      only the exchange constants characterizing the Mn-Mn
                      interactions. Calculated Curie temperatures within the
                      random-phase approximation are found to agree with
                      experimental data. Moreover, we study the temperature
                      dependence of the magnetization and the small deviation from
                      the experimental data exactly at the temperature of the
                      phase transition is discussed. Obtained results agree with
                      previous theoretical results using Liechtenstein's formula
                      to calculate the exchange constants and the Monte Carlo
                      simulation technique to estimate the Curie temperature.},
      keywords     = {J (WoSType)},
      cin          = {IAS-1 / PGI-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      shelfmark    = {Physics, Applied},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000290911400005},
      doi          = {10.1088/0022-3727/44/23/235001},
      url          = {https://juser.fz-juelich.de/record/17872},
}