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@ARTICLE{imek:189600,
      author       = {Šimek, P. and Sedmidubský, D. and Klímová, K. and
                      Mikulics, M. and Maryško, M. and Veselý, M. and Jurek, K.
                      and Sofer, Z.},
      title        = {{G}a{N}:{C}o epitaxial layers grown by {MOVPE}},
      journal      = {Journal of crystal growth},
      volume       = {414},
      issn         = {0022-0248},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2015-02737},
      pages        = {62 - 68},
      year         = {2015},
      abstract     = {We present a growth of GaN layers doped by cobalt using low
                      pressure metalorganic vapor phase epitaxy on c-plane
                      sapphire substrates. The in situ doping of GaN by Co was
                      performed by the decomposition of
                      bis(cyclopentadienyl)cobalt precursor. Three parameters, the
                      temperature and pressure of the deposition and the Ga/Co
                      ratio in the gas phase, influencing cobalt concentration
                      were investigated. The obtained results were confronted with
                      the thermodynamic predictions of Co solubility within GaN
                      lattice and electronic structure calculations of GaN:Co. The
                      magnetic properties of GaN:Co thin films were investigated
                      using superconducting quantum interference device
                      magnetometer. In addition, the layers were characterized by
                      Raman and photoluminescence spectroscopy and atomic force
                      microscopy. The concentration of Co was measured using
                      electron microprobe and depth profile was measured using
                      secondary ion mass spectroscopy. Room temperature
                      ferromagnetic ordering was observed on the Co doped GaN
                      layers.},
      cin          = {PGI-9 / JARA-FIT},
      ddc          = {540},
      cid          = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16 / PUB:(DE-HGF)36},
      UT           = {WOS:000349602900012},
      doi          = {10.1016/j.jcrysgro.2014.10.031},
      url          = {https://juser.fz-juelich.de/record/189600},
}