Electrostatic model of atomic ordering in complex perovskite alloys

Preprint

23 June 1998

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9806273

Abstract

We present a simple ionic model which successfully reproduces the various types of compositional long-range order observed in a large class of complex insulating perovskite alloys. The model assumes that the driving mechanism responsible for the ordering is simply the electrostatic interaction between the different ionic species. A possible new explanation for the anomalous long-range order observed in some Pb relaxor alloys, involving the proposed existence of a small amount of Pb^4+ on the B sublattice, is suggested by an analysis of the model.

Keywords

ELECTROSTATIC MODEL
COMPLEX PEROVSKITE
PEROVSKITE ALLOYS
ATOMIC ORDERING
RANGE ORDER
LONG RANGE
MODEL

All Related Versions

Version 1, 1998-06-23, ArXiv
Published version: Physical Review Letters, 81 (6), 1318.

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