Birefringence of mechanically stressed Rb2ZnCl4 crystals

Kurlyak V. Yu.; Stadnyk V. Yo.; Stakhura V. B.; Kohut Z. O.

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Birefringence of mechanically stressed Rb2ZnCl4 crystals

机译：机械应力的Rb2ZnCl4晶体的双折射

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The spectral and temperature dependences of the birefringence of mechanically free and uniaxially stressed Rb2ZnCl4 crystals have been investigated. It is shown that annealing a crystal leads to step changes in the birefringence at the phase transition from the incommensurate to commensurate phase, whereas the birefringence of as-prepared crystals changes continuously. It is established that the birefringence of Rb2ZnCl4 crystal is sensitive to uniaxial pressure; however, uniaxial stress does not change the character of its dispersion and temperature dependences. A new "pseudoisotropic" state of this crystal and a baric shift of the points of paraelectric phase-incommensurate phase-commensurate phase transitions to different temperature regions are found.

机译：研究了机械自由和单轴应力的Rb2ZnCl4晶体的双折射的光谱和温度依赖性。结果表明，对晶体进行退火会导致在从不相称到相称相变的相变中双折射的阶跃变化，而所制备晶体的双折射则连续变化。建立了Rb2ZnCl4晶体的双折射对单轴压力敏感的现象。但是，单轴应力不会改变其分散性和温度依赖性。发现了该晶体的新的“拟各向同性”状态以及顺电相-不相称相-相称相变点到不同温度区域的重偏移。

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《Crystallography reports》 |2015年第6期|共6页
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Kurlyak V. Yu.; Stadnyk V. Yo.; Stakhura V. B.; Kohut Z. O.;
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正文语种 eng
中图分类晶体学;
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1. Birefringence of mechanically stressed Rb2ZnCl4 crystals [J] . Kurlyak V. Yu., Stadnyk V. Yo., Stakhura V. B., Crystallography reports . 2015,第6期

机译：机械应力的Rb2ZnCl4晶体的双折射
2. Birefringence properties of mechanically clamped K_2ZnCl_4 crystals [J] . Stadnyk V.I., Gaba V.M., Andrievskii B.V., Physics of the solid state . 2011,第1期

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3. Anisotropy of the Refractive Indices and Thermal Expansion Coefficients of Rb2ZnCl4 Crystals [J] . Stadnyk V. Yo., Andrievskii B. V., Stakhura V. B., Crystallography reports . 2018,第7期

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Birefringence of mechanically stressed Rb2ZnCl4 crystals

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