Dimensional crossover of correlated anion disorder in oxynitride perovskites

Ciencias 23 Química 01 natural sciences 0104 chemical sciences
DOI: 10.1039/c8cc03462a Publication Date: 2018-05-01T08:34:47Z
ABSTRACT
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 perovskite oxynitrides. The is driven by expansion as x decreases, provides rapid increase in entropy due change subextensive extensive configurational regimes.
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