Effects of atomic short-range order on the properties of perovskite alloys in their morphotropic phase boundary

Details Effects of atomic short-range order on the properties of perovskite alloys in their morphotropic phase boundary Effects of atomic short-range order on the properties of perovskite alloys in their morphotropic phase boundary

2003-09-17

arxiv.org/abs/cond-mat/0309413v1

Phys. Rev. Lett. 91, 045504 (2003)

Physics

Condensed Matter

Materials Science

4 pages, with 2 postscript figures embedded. Uses REVTEX4 and graphicx macros

Scientific paper

10.1103/PhysRevLett.91.045504

The effects of atomic short-range order on the properties of Pb(Zr_{1-x}Ti_x)O_3 alloy in its morphotropic phase boundary (MPB) are predicted by combining first-principles-based methods and annealing techniques. Clustering is found to lead to a compositional expansion of this boundary, while the association of unlike atoms yields a contraction of this region. Atomic short-range order can thus drastically affect properties of perovskite alloys in their MPB, by inducing phase transitions. Microscopic mechanisms responsible for these effects are revealed and discussed.

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