Influence of uniaxial stresses on electronic and opticalproperties of β-K2SO4 crystal

• Autorzy: Andriyevsky B. , Jaskólski M. , Stadnyk V. Y. , Romanyuk M. O. , Kashuba Z. O. , Romanyuk M. M.

Identyfikatory

DOI

10.1515/msp-2015-0014

• Języki publikacji: EN

Abstrakty

EN

In view of possible practical applications of transparent crystals for mechanical stress sensors, theoretical investigation of piezo(elasto)optic effect in crystals might be useful for searching for proper materials, possessing large coefficients of elasto-optic effect, and for determination of uniaxial stress directions of maximum piezo-optical sensitivity. The influence of the uniaxial stresses on the electronic band structure, density of states, and optical properties of potassium sulphate crystal β-K₂SO₄ have been studied in the framework of the density functional theory using the ab initio CASTEP code. Increase in the band gap, E_g of the crystal takes place for three crystallographic directions and for moderate uniaxial stresses, σ< 1.5 GPa. Dependencies of principal refractive indices and polarizabilities upon principal uniaxial stresses are discussed together with other features of electronic structure of the crystal.

Słowa kluczowe

EN

crystals; insulators; electronic band structure; uniaxial stress; refractive indices

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2015
• Tom: Vol. 33, No. 1
• Strony: 11--17
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Andriyevsky B.

• Faculty of Electronics and Computer Sciences, Koszalin University of Technology, 2 Śniadeckich Str., PL-75-453, Koszalin, Poland

autor

Jaskólski M.

• Faculty of Electronics and Computer Sciences, Koszalin University of Technology, 2 Śniadeckich Str., PL-75-453, Koszalin, Poland

autor

Stadnyk V. Y.

• The Ivan Franko National University of Lviv, 8 Kyrylo-and-Mefodii Str., UA-79005 Lviv, Ukraine

autor

Romanyuk M. O.

• The Ivan Franko National University of Lviv, 8 Kyrylo-and-Mefodii Str., UA-79005 Lviv, Ukraine

autor

Kashuba Z. O.

• The Ivan Franko National University of Lviv, 8 Kyrylo-and-Mefodii Str., UA-79005 Lviv, Ukraine

autor

Romanyuk M. M.

• National University “Lviv Politechnic”, 12 Bandera Street, UA-79013 Lviv, Ukraine

Bibliografia

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