A Comparison of the Cc and R3c Space Groups for the Superlattice Phase of Pb(Zr0.52Ti0.48)O3

Details A Comparison of the Cc and R3c Space Groups for the Superlattice Phase of Pb(Zr0.52Ti0.48)O3 A Comparison of the Cc and R3c Space Groups for the Superlattice Phase of Pb(Zr0.52Ti0.48)O3

2004-07-30

arxiv.org/abs/cond-mat/0407807v1

Physics

Condensed Matter

Materials Science

18 pages, 3 figures, 2 tables, submitted to Physical Review B on 6th July 2004

Scientific paper

Recent controversy about the space group of the low temperature superlattice phase of Pb(Zr0.52Ti0.48)O3 is settled. It is shown that the R3c space group for the superlattice phase cannot correctly account for the peak positions of the superlattice reflections present in the neutron diffraction patterns. The correct space group is reconfirmed to be Cc. A comparison of the atomic coordinates of Cc and Cm space groups is also presented to show that in the absence of superlattice reflections, as is the case with XRD data, one would land up in the Cm space group. This superlattice phase is found to coexist with another monoclinic phase of Cm space group.

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