A monoclinic ferroelectric phase in the Pb(Zr1-xTix)O3 solid solution

Details A monoclinic ferroelectric phase in the Pb(Zr1-xTix)O3 solid solution A monoclinic ferroelectric phase in the Pb(Zr1-xTix)O3 solid solution

1999-02-27

arxiv.org/abs/cond-mat/9903007v5

Appl. Phys. Lett. 74 (14), 2059-2061, 1999

Physics

Condensed Matter

Materials Science

6 pages HTML file including 4 figures. Replaced to add Journal ref. Figures format changed. No change in the content

Scientific paper

10.1063/1.123756

A previously unreported ferroelectric phase has been revealed on a highly homogeneous sample of Pb(Zr0.52Ti0.48)O3 by high-resolution synchrotron x-ray powder diffraction measurements. At ambient temperature the sample has tetragonal symmetry (at= 4.037 A, ct= 4.138 A), and transforms below ~250 K into a phase which, unexpectedly, has monoclinic symmetry (am= 5.717 A, bm= 5.703 A, cm= 4.143 A, beta= 90.53 deg., at 20K). The intensity data strongly indicate that the polar axis lies in the monoclinic ac plane close to the pseudo-cubic [111] direction, which would be an example of the species m3m(12)A2Fm predicted on symmetry grounds by Shuvalov.

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