Strontium Bismuthates Sr2Bi2O5 and Sr6Bi2O11: Temperature Dependencies of Urbach Energy and Location of «Urbach Focus»

Egor Olegovich Nashchochin; Dmitry Sergeevich Shtarev; Anna Vladimirovna Shtareva; Alexander Vjacheslavovich Syuy

doi:10.4028/www.scientific.net/DDF.386.181

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 386Strontium Bismuthates Sr2Bi2O5 and Sr6Bi2O11:...

Strontium Bismuthates Sr₂Bi₂O₅ and Sr₆Bi₂O₁₁: Temperature Dependencies of Urbach Energy and Location of «Urbach Focus»

Abstract:

We present information about temperature dependence of optical properties of two different strontium bismuthates. We demonstrate that temperature dependencies of Urbach energy of two strontium bismuthates differ radically. Abnormal behavior of Urbach focus of strontium bismuthate Sr₂Bi₂O₅ is observed. We assume existence of phase transit in strontium bismuthate Sr₂Bi₂O₅ at the temperature around 305 K.

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Periodical:

Defect and Diffusion Forum (Volume 386)

Pages:

181-185

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.386.181

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Online since:

September 2018

Authors:

Egor Olegovich Nashchochin, Dmitry Sergeevich Shtarev*, Anna Vladimirovna Shtareva, Alexander Vjacheslavovich Syuy

Keywords:

Alkaline Earth Metal Bismuthate, Diffuse Reflectance Spectroscopy, Strontium Bismuthate, Urbach Energy, Urbach Focus

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