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Temperature dependence of optical activity and circular dichroism in alpha-ZnP2 crystals

机译:α-ZnP2晶体中光学活性和圆二色性的温度依赖性

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The circular birefringence related to the gyration components along and perpendicular to the optical axis and the circular dichroism of tetragonal alpha-ZnP2 single crystals are determined in the temperature range 290-450 K, using universal null-polarimetric techniques. The oscillatory temperature behaviour of the optical rotatory power and the ellipticity of light passed through the crystal in the (001) direction is quantitatively well explained by the influence of multiple reflections of light. The observed thermal hysteresis and dependence of the gyration on sample prehistory testify indirectly the availability of incommensurately modulated structure in alpha-ZnP2. [References: 31]
机译:使用通用零极化技术,在290-450 K的温度范围内确定与沿光轴并垂直于光轴的旋转分量相关的圆形双折射和四方α-ZnP2单晶的圆形二色性。旋光力的振荡温度行为和在(001)方向上通过晶体的光的椭圆率通过光的多次反射的影响在数量上得到了很好的解释。观察到的热滞后和回转对样品史前时间的依赖性间接证明了α-ZnP2中无比调节结构的可用性。 [参考:31]

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