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@ARTICLE{Titov:865912,
      author       = {Titov, Ivan and Barbieri, Massimiliano and Bender, Philipp
                      and Peral, Inma and Kohlbrecher, Joachim and Saito, Kotaro
                      and Pipich, Vitaliy and Yano, Masao and Michels, Andreas},
      title        = {{E}ffect of grain-boundary diffusion process on the
                      geometry of the grain microstructure of {N}d − {F}e −
                      {B} nanocrystalline magnets},
      journal      = {Physical review materials},
      volume       = {3},
      number       = {8},
      issn         = {2475-9953},
      address      = {College Park, MD},
      publisher    = {APS},
      reportid     = {FZJ-2019-05189},
      pages        = {084410},
      year         = {2019},
      abstract     = {Hot-deformed anisotropic Nd−Fe−B nanocrystalline
                      magnets have been subjected to the grain-boundary diffusion
                      process (GBDP) using a Pr70Cu30 eutectic alloy. The
                      resulting grain microstructure, consisting of
                      shape-anisotropic Nd−Fe−B nanocrystals surrounded by a
                      Pr−Cu-rich intergranular grain-boundary phase, has been
                      investigated using unpolarized small-angle neutron
                      scattering and very small-angle neutron scattering. The
                      neutron data have been analyzed using the generalized
                      Guinier-Porod model and by computing, model independently,
                      the distance distribution function. We find that the GBDP
                      results in a change of the geometry of the scattering
                      particles: In the small-q regime, the scattering from the
                      as-prepared sample exhibits a slope of about 2, which is
                      characteristic for the scattering from two-dimensional
                      platelet-shaped objects, while the GBDP sample manifests a
                      slope of about 1, which is the scattering signature of
                      one-dimensional elongated objects. The evolution of the
                      Porod exponent indicates the smoothing of the grain surfaces
                      due to the GBDP, which is accompanied by an increase of the
                      coercivity.},
      cin          = {JCNS-FRM-II / JCNS-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
                      Neutron Research (JCNS) (POF3-623)},
      pid          = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
      experiment   = {EXP:(DE-MLZ)KWS3-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000480695600004},
      doi          = {10.1103/PhysRevMaterials.3.084410},
      url          = {https://juser.fz-juelich.de/record/865912},
}