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Dimensional crossover of correlated anion disorder in oxynitride perovskites

Dimensional crossover of correlated anion disorder in oxynitride perovskites

Scientific Highlights Materials for information science and electronics 15 June 2018 709 hits jags

Chem. Commun.DOI:10.1039/C8CC03462A

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.

Related Topics: Materials for information science and electronics

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