Splitting of the phase transition in TGSe crystal under uniaxial stress |
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| Authors: | Zbigniew Tylczy&#x Ski Asror D. Karaev Bogus&#x Aw Mr z |
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| Affiliation: | Zbigniew TylczyŃ,Ski ,Asror D. Karaev,Bogusł,Aw Mró,z |
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| Abstract: | Changes in the velocity and attenuation coefficient of quasi-longitudinal waves propagating in TGSe crystal in the direction X induced by uniaxial stress σY were measured in the temperature range of ferroelectric phase transition. The application of uniaxial stress was found to shift the phase transition temperature by ∂TC/∂σY = -0.18 K/MPa. For the stress greater than 2 MPa an additional anomaly in the wave velocity and attenuation appears, which has been interpreted as a splitting of the phase transition. |
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| Keywords: | ferroelectrics ultrasonic waves uniaxial stress |
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