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@ARTICLE{Sabyasachi:127637,
      author       = {Sabyasachi, Sk. and Patra, M. and Majumdar, S. and Giri, S.
                      and Das, S. and Amaral, V. S. and Iglesias, O. and Borghols,
                      W. and Chatterji, T.},
      title        = {{G}lassy magnetic phase driven by short-range charge and
                      magnetic ordering in nanocrystalline
                      {L}a1/3{S}r2/3{F}e{O}3−δ: {M}agnetization, {M}össbauer,
                      and polarized neutron studies},
      journal      = {Physical review / B},
      volume       = {86},
      number       = {10},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2012-00595},
      pages        = {104416},
      year         = {2012},
      note         = {10 pages, 9 figures. Fig. 1 available upon request or in
                      http://www.ffn.ub.es/oscar/Articles.html. Accepted in Phys.
                      Rev. B},
      abstract     = {The charge ordered La$_{1/3}$Sr$_{2/3}$FeO$_{3-delta}$
                      (LSFO) in bulk and nanocrystalline forms are investigated
                      using ac and dc magnetization, M'{o}ssbauer, and polarised
                      neutron studies. A complex scenario of short range charge
                      and magnetic ordering is realized from the polarised neutron
                      studies in nanocrystalline specimen. This short range
                      ordering does not involve any change in spin state and
                      modification in the charge disproportion between Fe$^{3+}$
                      and Fe$^{5+}$ compared to bulk counterpart as evident in the
                      M'{o}ssbauer results. The refinement of magnetic diffraction
                      peaks provides magnetic moments of Fe$^{3+}$ and Fe$^{5+}$
                      are about 3.15$mu_B$ and 1.57$mu_B$ for bulk, and 2.7$mu_B$
                      and 0.53$mu_B$ for nanocrystalline specimen, respectively.
                      The destabilization of charge ordering leads to magnetic
                      phase separation, giving rise to the robust exchange bias
                      (EB) effect. Strikingly, EB field at 5 K attains a value as
                      high as 4.4 kOe for average size $sim$ 70 nm, which is zero
                      for the bulk counterpart. A strong frequency dependence of
                      ac susceptibility reveals cluster-glass like transition
                      around $sim$ 65 K, below which EB appears. Overall results
                      propose that finite size effect directs the complex glassy
                      magnetic behavior driven by unconventional short range
                      charge and magnetic ordering, and magnetic phase separation
                      appears in nanocrystalline LSFO.},
      cin          = {JARA-FIT / 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)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) / 54G - JCNS
                      (POF2-54G24) / 544 - In-house Research with PNI (POF2-544)},
      pid          = {G:(DE-HGF)POF2-422 / G:(DE-HGF)POF2-424 /
                      G:(DE-HGF)POF2-54G24 / G:(DE-HGF)POF2-544},
      experiment   = {EXP:(DE-MLZ)DNS-20140101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {1209.1923},
      howpublished = {arXiv:1209.1923},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1209.1923;\%\%$},
      UT           = {WOS:000308640300005},
      doi          = {10.1103/PhysRevB.86.104416},
      url          = {https://juser.fz-juelich.de/record/127637},
}