In:
physica status solidi c, Wiley, Vol. 6, No. 12 ( 2009-12), p. 2765-2768
Abstract:
In this work a spectroscopic ellipsometry was applied to the thermo‐optical investigations of sodium niobate NaNbO 3 (NN) thin films at the wide temperature range of 5–820 K. The temperature dependence of complex refractive index dispersions and optical bang energy of the direct allowed electron transitions were evaluated. Additionally dynamic scans of the main ellipsometric angles at the several fixed wave lengths of 300, 400, 500 and 635 nm were performed to acquire more detailed temperature dependences of the refractive index and extinction coefficient. Pronounced minima/maxima and substantial jumps in the temperature dependence of complex refractive index and band gap energy were found and corresponded to the structural phase transition temperatures of NN single crystals and ceramics. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Type of Medium:
Online Resource
ISSN:
1862-6351
,
1610-1642
DOI:
10.1002/pssc.200982589
Language:
English
Publisher:
Wiley
Publication Date:
2009
detail.hit.zdb_id:
2105580-4
detail.hit.zdb_id:
2102966-0
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