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@article{806291, author = {Nebojsa, Alois and Fikarová Zrzavecká, Olga and Navrátil, Karel and Humlíček, Josef}, article_number = {5}, keywords = {spectroscopic ellipsometry; iron; CrNiAl steel; temperature dependence}, language = {eng}, issn = {1610-1642}, journal = {physica status solidi (c)}, title = {Temperature dependence of ellipsometric spectra of Fe and CrNiAl steel}, volume = {5}, year = {2008} }
TY - JOUR ID - 806291 AU - Nebojsa, Alois - Fikarová Zrzavecká, Olga - Navrátil, Karel - Humlíček, Josef PY - 2008 TI - Temperature dependence of ellipsometric spectra of Fe and CrNiAl steel JF - physica status solidi (c) VL - 5 IS - 5 SP - 1176-1179 EP - 1176-1179 SN - 16101642 KW - spectroscopic ellipsometry KW - iron KW - CrNiAl steel KW - temperature dependence N2 - We report on the temperature dependence of optical response of pure bcc iron and CrNiAl steel. Ellipsometric spectra, covering the 1.4-3.0 eV spectral range, have been obtained during temperature cycles reaching 650 C in UHV chamber. Since the penetration depth of light is rather small and the data are sensitive to the quality of sample surfaces, we have examined polished, etched and annealed samples. We identify characteristic features of the temperature dependence, consisting in spectral shifts of interband transitions and a redistribution of spectral weight. We have also detected reproducible irreversible changes in the initial stages of annealing cycles when the samples are heated to at least 300 C. With increasing temperature, we observe a pronounced reduction of the minority-spin interband contribution. ER -
NEBOJSA, Alois, Olga FIKAROVÁ ZRZAVECKÁ, Karel NAVRÁTIL a Josef HUMLÍČEK. Temperature dependence of ellipsometric spectra of Fe and CrNiAl steel. \textit{physica status solidi (c)}. 2008, roč.~5, č.~5, s.~1176-1179. ISSN~1610-1642.
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