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@ARTICLE{Solanki:275660,
      author       = {Solanki, Ravindra Singh and Senyshyn, Anatoliy and Pandey,
                      Dhananjai},
      title        = {{S}pace group symmetries of the phases of
                      $\mathrm{({P}b_{0.94}{S}r_{0.06)}({Z}r_{x}{T}i_{1−x}){O}_{3}}$
                      across the antiferrodistortive phase transition in the
                      composition range 0.620 $≲ x ≲$ 0.940},
      journal      = {Physical review / B},
      volume       = {90},
      number       = {21},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PUBDB-2015-04160},
      pages        = {214110},
      year         = {2014},
      abstract     = {The existing controversies about the space group symmetries
                      of Pb(Zr$_{x}$Ti$_{1−x}$)O$_{3}$ (PZT) above and below the
                      antiferrodistortive (AFD) phase-transition temperature
                      (T$_{AFD}$) in the Zr$^{4+}$-rich (0.620 ≲ x ≲ 0.940)
                      compositions are addressed using the results of dielectric,
                      synchrotron x-ray powder diffraction (SXRPD) and neutron
                      powder diffraction (NPD) studies. These compositions undergo
                      an AFD phase transition above room temperature due to
                      tilting of oxygen octahedra leading to a superlattice phase
                      of PZT. We have substituted 6\% Sr$^{2+}$ at a Pb$^{2+}$
                      site to enhance the tilt angle and thereby the intensity of
                      the superlattice peaks. The real and imaginary parts of the
                      complex dielectric permittivity have been used to locate the
                      paraelectric to ferroelectric and ferroelectric to AFD phase
                      transitions. Rietveld analysis of SXRPD and NPD profiles
                      unambiguously reject the rhombohedral phases in the R3c and
                      R3m space groups below and above T$_{AFD}$, respectively,
                      with or without a coexisting monoclinic phase in the Cm
                      space group and confirm that the true symmetries are
                      monoclinic in the Cc and Cm space groups below and above
                      T$_{AFD}$, respectively. Based on these and previous
                      findings a phase diagram of PSZT for 0.40 ≤ x ≤ 0.90
                      showing stability fields of monoclinic Cc and monoclinic Cm,
                      tetragonal P4mm, and cubic Pm3¯m phases has also been
                      presented.},
      cin          = {FS-PE},
      ddc          = {530},
      cid          = {I:(DE-H253)FS-PE-20120731},
      pnm          = {6G3 - PETRA III (POF3-622) / PETRA Beamline P02.1
                      (POF2-54G14) / INDIA-DESY - INDIA-DESY Collaboration
                      $(2020_Join2-INDIA-DESY)$},
      pid          = {G:(DE-HGF)POF3-6G3 / G:(DE-H253)POF2-P02.1-20140410 /
                      $G:(DE-HGF)2020_Join2-INDIA-DESY$},
      experiment   = {EXP:(DE-H253)P-P02.1-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000347121800001},
      doi          = {10.1103/PhysRevB.90.214110},
      url          = {https://bib-pubdb1.desy.de/record/275660},
}