Dimensional crossover of correlated anion disorder in oxynitride perovskites

Hannah Johnston; Ashley P. Black; Paula Kayser; Judith Oró-Solé; David A. Keen; Amparo Fuertes; J. Paul Attfield

doi:10.1039/c8cc03462a

Dimensional crossover of correlated anion disorder in oxynitride perovskites

Hannah Johnston, Ashley P. Black, Paula Kayser, Judith Oró-Solé, David A. Keen, Amparo Fuertes, J. Paul Attfield

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Abstract

© 2018 The Royal Society of Chemistry. A simple crossover from two-dimensional to three-dimensional correlated disorder of O and N atoms on a cubic lattice has been discovered within the Ba1-xSrxTaO2N series of perovskite oxynitrides. The crossover is driven by lattice expansion as x decreases, and provides a rapid increase in entropy due to a change from subextensive to extensive configurational entropy regimes.

Original language	English
Pages (from-to)	5245-5247
Journal	Chemical Communications
Volume	54
Issue number	41
DOIs	https://doi.org/10.1039/c8cc03462a
Publication status	Published - 1 Jan 2018

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title = "Dimensional crossover of correlated anion disorder in oxynitride perovskites",

abstract = "{\textcopyright} 2018 The Royal Society of Chemistry. A simple crossover from two-dimensional to three-dimensional correlated disorder of O and N atoms on a cubic lattice has been discovered within the Ba1-xSrxTaO2N series of perovskite oxynitrides. The crossover is driven by lattice expansion as x decreases, and provides a rapid increase in entropy due to a change from subextensive to extensive configurational entropy regimes.",

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AU - Black, Ashley P.

AU - Kayser, Paula

AU - Oró-Solé, Judith

AU - Keen, David A.

AU - Fuertes, Amparo

AU - Paul Attfield, J.

PY - 2018/1/1

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N2 - © 2018 The Royal Society of Chemistry. A simple crossover from two-dimensional to three-dimensional correlated disorder of O and N atoms on a cubic lattice has been discovered within the Ba1-xSrxTaO2N series of perovskite oxynitrides. The crossover is driven by lattice expansion as x decreases, and provides a rapid increase in entropy due to a change from subextensive to extensive configurational entropy regimes.

AB - © 2018 The Royal Society of Chemistry. A simple crossover from two-dimensional to three-dimensional correlated disorder of O and N atoms on a cubic lattice has been discovered within the Ba1-xSrxTaO2N series of perovskite oxynitrides. The crossover is driven by lattice expansion as x decreases, and provides a rapid increase in entropy due to a change from subextensive to extensive configurational entropy regimes.

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DO - 10.1039/c8cc03462a

M3 - Article

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VL - 54

SP - 5245

EP - 5247

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ER -

Dimensional crossover of correlated anion disorder in oxynitride perovskites

Abstract

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