Fundamental spectra of optical functions of ferroelectric sodium nitrite
- Udmurt State University (Russian Federation)
Spectra of optical fundamental functions of ferroelectric sodium nitrite were determined in the range 4-24 eV at 77 K for the three polarizations: E -parallel a, E -parallel b, and E -parallel c. The calculations were based on the experimental R(E) reflection spectra and integral Kramers-Kronig relations. Using the method of Argand diagrams, the permittivity and bulk characteristic electron loss spectra were decomposed into the elementary transverse and longitudinal components. Their main parameters were determined. The obtained data were compared with the theoretical calculations of the permittivity spectra performed using the FPLAPW method. The main features of the permittivity spectra, the parameters of the transitions, and their theoretical nature were established.
- OSTI ID:
- 21255653
- Journal Information:
- Semiconductors, Vol. 42, Issue 7; Other Information: DOI: 10.1134/S1063782608070026; Copyright (c) 2008 Pleiades Publishing, Ltd; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
- Country of Publication:
- United States
- Language:
- English
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