On short range ordering in the perovskite lead magnesium niobate

A. D. Hilton; D. J. Barber; C. A. Randall; T. R. Shrout

doi:10.1007/BF00575371

On short range ordering in the perovskite lead magnesium niobate

A. D. Hilton, D. J. Barber, C. A. Randall, T. R. Shrout

Research output: Contribution to journal › Article › peer-review

240 Scopus citations

Abstract

The structural ordering characteristics of lead magnesium niobate (PMN) and solid solutions (PMN-PT) of PMN with lead titanate have been investigated using transmission electron microscopy (TEM). It is proposed that short range, non-stoichiometric 1:1 ordering of the Mg and Nb cations on an F-centred superlattice generates space charges which dominate the kinetics of the ordering process and inhibit the development of long-range order. Furthermore, it is demonstrated that by introducing off-valent La³⁺ ions on to the A-site sublattice, the local charges can be at least partially-compensated and an increase in the extent of structural ordering is consequently observed.

Original language	English (US)
Pages (from-to)	3461-3466
Number of pages	6
Journal	Journal of Materials Science
Volume	25
Issue number	8
DOIs	https://doi.org/10.1007/BF00575371
State	Published - Aug 1 1990

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1007/BF00575371

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title = "On short range ordering in the perovskite lead magnesium niobate",

abstract = "The structural ordering characteristics of lead magnesium niobate (PMN) and solid solutions (PMN-PT) of PMN with lead titanate have been investigated using transmission electron microscopy (TEM). It is proposed that short range, non-stoichiometric 1:1 ordering of the Mg and Nb cations on an F-centred superlattice generates space charges which dominate the kinetics of the ordering process and inhibit the development of long-range order. Furthermore, it is demonstrated that by introducing off-valent La3+ ions on to the A-site sublattice, the local charges can be at least partially-compensated and an increase in the extent of structural ordering is consequently observed.",

author = "Hilton, {A. D.} and Barber, {D. J.} and Randall, {C. A.} and Shrout, {T. R.}",

year = "1990",

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AU - Hilton, A. D.

AU - Barber, D. J.

AU - Randall, C. A.

AU - Shrout, T. R.

PY - 1990/8/1

Y1 - 1990/8/1

N2 - The structural ordering characteristics of lead magnesium niobate (PMN) and solid solutions (PMN-PT) of PMN with lead titanate have been investigated using transmission electron microscopy (TEM). It is proposed that short range, non-stoichiometric 1:1 ordering of the Mg and Nb cations on an F-centred superlattice generates space charges which dominate the kinetics of the ordering process and inhibit the development of long-range order. Furthermore, it is demonstrated that by introducing off-valent La3+ ions on to the A-site sublattice, the local charges can be at least partially-compensated and an increase in the extent of structural ordering is consequently observed.

AB - The structural ordering characteristics of lead magnesium niobate (PMN) and solid solutions (PMN-PT) of PMN with lead titanate have been investigated using transmission electron microscopy (TEM). It is proposed that short range, non-stoichiometric 1:1 ordering of the Mg and Nb cations on an F-centred superlattice generates space charges which dominate the kinetics of the ordering process and inhibit the development of long-range order. Furthermore, it is demonstrated that by introducing off-valent La3+ ions on to the A-site sublattice, the local charges can be at least partially-compensated and an increase in the extent of structural ordering is consequently observed.

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On short range ordering in the perovskite lead magnesium niobate

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