Low temperature superlattice in monoclinic PZT

Details Low temperature superlattice in monoclinic PZT Low temperature superlattice in monoclinic PZT

2002-04-24

arxiv.org/abs/cond-mat/0204512v1

Phys. Rev. B 66, 060103 (2002)

Physics

Condensed Matter

Materials Science

REVTeX4, 4 eps figures embedded. JPG version of figs. 2&4 is also included

Scientific paper

10.1103/PhysRevB.66.060103

TEM has shown that the strongly piezoelectric material Pb(Zr0.52Ti0.48)O3 separates into two phases at low temperatures. The majority phase is the monoclinic phase previously found by x-ray diffraction. The minority phase, with a nanoscale coherence length, is a slightly distorted variant of the first resulting from the anti-phase rotation of the oxygen octahedra about [111]. This work clears up a recent controversy about the origin of superlattice peaks in these materials, and supports recent theoretical results predicting the coexistence of ferroelectric and rotational instabilities.

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