Tuning optical properties of complex oxides: examples of 12CaO.7Al2O3 mayenite and LaCrO3 perovskite

Peter V. Sushko

doi:10.1117/12.912844

29 February 2012 Tuning optical properties of complex oxides: examples of 12CaO.7Al₂O₃ mayenite and LaCrO₃ perovskite

Peter V. Sushko

Proceedings Volume 8263, Oxide-based Materials and Devices III; 826310 (2012) https://doi.org/10.1117/12.912844
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Optical absorption bands in two complex oxides are characterised using ab initio simulations and an embedded cluster method. In sub-nanoporous 12CaO.7Al₂O₃ the width of the optical gap can be controlled by modifying the chemical identities and relative concentration of extra-framework species. In antiferromagnetic LaCrO₃, Cr 3d states split into four narrow one-electron bands and give rise to several types of the optical transitions. Their excitation energies respond differently to lattice strain, thus, providing a possibility for tuning the excitation energies in supported LaCrO₃ films by selecting appropriate substrates.

Citation Download Citation

Peter V. Sushko "Tuning optical properties of complex oxides: examples of 12CaO.7Al₂O₃ mayenite and LaCrO₃ perovskite", Proc. SPIE 8263, Oxide-based Materials and Devices III, 826310 (29 February 2012); https://doi.org/10.1117/12.912844

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