Optical properties of reduced LiNbO3

Jhans, H. ; Honig, J. M. ; Rao, C. N. R. (1986) Optical properties of reduced LiNbO3 Journal of Physics C: Solid State Physics, 19 (19). pp. 3649-3658. ISSN 0022-3719

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Official URL: http://iopscience.iop.org/0022-3719/19/19/019

Related URL: http://dx.doi.org/10.1088/0022-3719/19/19/019


Optical characteristics of H2-reduced LiNbO3 have been studied. The optical transmission in the spectral range 0.3 to 5 mu m is progressively narrowed as the sample is reduced. An absorption band centred at about 2.48 eV is assigned to small polarons. This interpretation is consistent with the published defect structure, transport and spectroscopic reports on reduced LiNbO3. A semi-quantitative analysis of the 2.48 eV absorption band is carried out by employing the Reik and Heese theory (1967) for optical properties of small polarons.

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