Johnston, HannahBlack, AshleyKayser González, PaulaOró-Solé, JudithKeen, DavidFuertes, AmparoAttfield, Paul2024-01-122024-01-122018ohnston, Hannah, et al. «Dimensional Crossover of Correlated Anion Disorder in Oxynitride Perovskites». Chemical Communications, vol. 54, n.o 41, 2018, pp. 5245-47. https://doi.org/10.1039/C8CC03462A.1364-548X10.1039/c8cc03462ahttps://hdl.handle.net/20.500.14352/92803A simple crossover from two-dimensional to three-dimensional correlated disorder of O and N atoms on a cubic lattice has been discovered within the Ba1xSrxTaO2N 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.engjournal articlehttps://doi.org/10.1039/c8cc03462aopen accessCiencias23 Química