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@ARTICLE{Paul:201167,
      author       = {Paul, Amitesh and Mattauch, Stefan},
      title        = {{C}hemical and magnetic profile of magnetic semiconductors
                      as probed by polarized neutron reflectivity},
      journal      = {Journal of physics / D},
      volume       = {43},
      number       = {18},
      issn         = {1361-6463},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2015-03472},
      pages        = {185002},
      year         = {2010},
      abstract     = {We investigate the depth dependence of magnetic species in
                      co-doped dilute magnetic semiconductor (DMS) specimens. We
                      also compare the reliability of the nuclear and
                      magnetization depth profile of these specimens on different
                      polarized neutron reflectivity instruments. These
                      reflectometers were not only angle dispersive instruments
                      but also wavelength dispersive instruments. Measurements
                      indicate a segregation of DMS species onto the top into the
                      cap layer for lower Fe doping. However, for higher Fe
                      doping, as we alter the doping concentrations of magnetic
                      species, no segregation and lower clustering tendencies are
                      indicated. Thus sensitive depth profiling, for specimens
                      with such low magnetic-ion concentrations, may not be a
                      challenge for brighter sources and careful measurements. Our
                      results show that homogeneity can be achieved with Fe
                      co-doping within a Ge matrix which can make it a potential
                      candidate for spintronic applications.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS (München) ; Jülich
                      Centre for Neutron Science JCNS (München) ; JCNS-FRM-II},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ /
                      I:(DE-Juel1)JCNS-FRM-II-20110218},
      pnm          = {422 - Spin-based and quantum information (POF2-422) / 424 -
                      Exploratory materials and phenomena (POF2-424) / 542 -
                      Neutrons (POF2-542) / 544 - In-house Research with PNI
                      (POF2-544) / 54G - JCNS (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-422 / G:(DE-HGF)POF2-424 /
                      G:(DE-HGF)POF2-542 / G:(DE-HGF)POF2-544 /
                      G:(DE-HGF)POF2-54G24},
      experiment   = {EXP:(DE-MLZ)MARIA-20140101 / EXP:(DE-MLZ)TREFF-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000276910500003},
      doi          = {10.1088/0022-3727/43/18/185002},
      url          = {https://juser.fz-juelich.de/record/201167},
}