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Ferroelectrics Volume 257, 2001 - Issue 1
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Original Articles

Ultrasonic investigation of photostimulated phenomena in ferroelectric semiconductors

V. Samulionis Physics Faculty, Vilnius University, Sauletekio 9/3, 2040, Vilnius, Lithuania
,
J. Banys Physics Faculty, Vilnius University, Sauletekio 9/3, 2040, Vilnius, Lithuania
&
Yu. Vysochanskii Physics Faculty, Vilnius University, Sauletekio 9/3, 2040, Vilnius, Lithuania; Institute of Solid State Physics and Chemistry, Uzhgorod University, Ukraine
Pages 135-140 | Received 15 Apr 2001, Published online: 09 Mar 2011
 
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Abstract

The paper presents results of the study of the dependence of longitudinal ultrasonic velocity and attenuation in ferroelectric-semiconductor single crystals of the Sn2P2(Se,S)6 family on temperature. A photostimulated shift of the phase transition to lower temperature has been detected. Oscillations of relaxing ultrasonic velocity and attenuation have been observed in the incommensurate phase of Sn2P2Se6 crystal after illumination. Ultrasonic investigations show that the intermediate incommensurate phase appears in illuminated at. the Lifshitz point Sn2P2Se0.28S0.72 crystal

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Related Research Data

Ferroelectricity, nonlinear dynamics, and relaxation effects in monoclinic Sn2P2S6.
Source: American Physical Society (APS)

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