Anisotropy in the Raman scattering of a CaFeO2.5 single crystal and its link with oxygen ordering in Brownmillerite frameworks.

Abstract

Periodic DFT calculations allow an understanding of the strong orientation-dependent Raman spectra of oriented CaFeO2.5 single crystals. Modes involving the oscillation of the apical oxygen (O(ap)) atoms perturb the induced electric dipoles. These are formed by anisotropy in the charge distribution and are found to be strongly enhanced when the electric… (More)
DOI: 10.1088/0953-8984/27/22/225403

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Cite this paper

@article{Piovano2015AnisotropyIT, title={Anisotropy in the Raman scattering of a CaFeO2.5 single crystal and its link with oxygen ordering in Brownmillerite frameworks.}, author={A Piovano and Monica Ceretti and Mark R. Johnson and Giovanni Agostini and Werner Paulus and Carlo Lamberti}, journal={Journal of physics. Condensed matter : an Institute of Physics journal}, year={2015}, volume={27 22}, pages={225403} }