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@ARTICLE{Pradheesh:129129,
      author       = {Pradheesh, R. and Nair, Harikrishnan and Sankaranarayanan,
                      V. and Sethupat, K.},
      title        = {{L}arge {M}agnetoresistance and {J}ahn {T}eller effect in
                      {S}r$_2${F}e{C}o{O}$_6$},
      journal      = {The European physical journal / B},
      volume       = {85},
      issn         = {1434-6028},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {FZJ-2013-00649},
      pages        = {260},
      year         = {2012},
      abstract     = {Neutron diffraction measurement on the spin glass double
                      perovskite Sr$_2$FeCoO$_6$ reveals site disorder as well as
                      Co$^{3+}$ intermediate spin state. In addition, multiple
                      valence states of Fe and Co are confirmed through
                      M'{o}ssbauer and X-ray photoelectron spectroscopy. The
                      structural disorder and multiple valence lead to competing
                      ferromagnetic and antiferromagnetic interactions and
                      subsequently to a spin glass state, which is reflected in
                      the form of an additional $T$-linear contribution at low
                      temperatures in specific heat. A clear evidence of
                      Jahn-Teller distortion at the Co$^{3+}$-O$_6$ complex is
                      observed and incorporating the physics of Jahn-Teller
                      effect, the presence of localized magnetic moment is shown.
                      A large, negative and anomalous magnetoresistance of
                      $approx$ 63\% at 14K in 12T applied field is observed for
                      Sr$_2$FeCoO$_6$. The observed magnetoresistance could be
                      explained by applying a semi-empirical fit consisting of a
                      negative and a positive contribution and show that the
                      negative magnetoresistance is due to spin scattering of
                      carriers by localized magnetic moments in the spin glass
                      phase.},
      cin          = {JARA-FIT / PGI-4 / JCNS-2 / JCNS (München) ; Jülich
                      Centre for Neutron Science JCNS (München) ; JCNS-FRM-II},
      ddc          = {530},
      cid          = {$I:(DE-82)080009_20140620$ / I:(DE-Juel1)PGI-4-20110106 /
                      I:(DE-Juel1)JCNS-2-20110106 /
                      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)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {1205.5879},
      howpublished = {arXiv:1205.5879},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1205.5879;\%\%$},
      UT           = {WOS:000308403500029},
      doi          = {10.1140/epjb/e2012-30264-2},
      url          = {https://juser.fz-juelich.de/record/129129},
}