Electron energy-loss spectroscopy of LiMn2O4, LiMn1.6Ti0.4O4 and LiMn1.5Ni0.5O4

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Abstract

The dielectric properties of LiMn2O4, LiMn1.6Ti0.4O4 and LiMn1.5Ni0.5O4 powders, synthesized by sol-gel method, were determined by analyzing the low-loss region of the electron energy-loss spectroscopy (EELS) spectrum in a transmission electron microscope. From these data, the optical joint density of states (OJDS) was obtained by Kramers-Kronig analysis. Since maxima observed in the OJDS spectra are assigned to interband transitions above the Fermi level, these spectra can be interpreted on the basis of calculated density of states (DOS), carried out with the CASTEP code. Experimental and theoretical results are in good agreement. © 2009 Elsevier Ltd. All rights reserved.

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Espinosa-Magaña, F., Alvarez-Contreras, L., Morales-Rivera, O., Ochoa-Lara, M. T., Loya-Mancilla, S. M., & Aguilar-Elguezabal, A. (2009). Electron energy-loss spectroscopy of LiMn2O4, LiMn1.6Ti0.4O4 and LiMn1.5Ni0.5O4. Journal of Physics and Chemistry of Solids, 70(6), 972–977. https://doi.org/10.1016/j.jpcs.2009.04.018

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