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@ARTICLE{Nair:23058,
      author       = {Nair, H. and Swain, D. and Hariharan, N. and Adiga, S. and
                      Narayana, C. and Elzabeth, S.},
      title        = {{G}riffiths phase-like behavior and spin-phonon coupling in
                      double perovskite {T}b2{N}i{M}n{O}6},
      journal      = {Journal of applied physics},
      volume       = {110},
      issn         = {0021-8979},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {PreJuSER-23058},
      pages        = {123919},
      year         = {2011},
      note         = {S.E. wishes to thank Department of Science and Technology,
                      India, for financial support through project grants.},
      abstract     = {The Griffiths phase-like features and the spin-phonon
                      coupling effects observed in Tb2NiMnO6 are reported. The
                      double perovskite compound crystallizes in monoclinic
                      P2(1)/n space group and exhibits a magnetic phase transition
                      at T-c similar to 111 K as an abrupt change in
                      magnetization. A negative deviation from ideal Curie-Weiss
                      law exhibited by 1/chi(T) curves and less-than-unity
                      susceptibility exponents from the power-law analysis of
                      inverse susceptibility are reminiscent of Griffiths
                      phase-like features. Arrott plots derived from magnetization
                      isotherms support the inhomogeneous nature of magnetism in
                      this material. The observed effects originate from
                      antiferromagnetic interactions that arise from inherent
                      disorder in the system. Raman scattering experiments display
                      no magnetic-order-induced phonon renormalization below Tc in
                      Tb2NiMnO6, which is different from the results observed in
                      other double perovskites and is correlated to the smaller
                      size of the rare earth. The temperature evolution of
                      full-width-at-half-maximum for the stretching mode at 645
                      cm(-1) presents an anomaly that coincides with the magnetic
                      transition temperature and signals a close connection
                      between magnetism and lattice in this material. (C) 2011
                      American Institute of Physics. [doi: 10.1063/1.3671674]},
      keywords     = {J (WoSType)},
      cin          = {PGI-4 / JCNS (München) ; Jülich Centre for Neutron
                      Science JCNS (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-4-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {Grundlagen für zukünftige Informationstechnologien
                      (FUEK412) / 544 - In-house Research with PNI (POF2-544)},
      pid          = {G:(DE-Juel1)FUEK412 / G:(DE-HGF)POF2-544},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      shelfmark    = {Physics, Applied},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000298639800078},
      doi          = {10.1063/1.3671674},
      url          = {https://juser.fz-juelich.de/record/23058},
}