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首页> 外文期刊>Crystallography reports >Temperature dependence of the crystal-optics characteristics of [N(CH3)(4)](2)ZnCl4:Ni2+ crystals with correlated motion of tetrahedral groups
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Temperature dependence of the crystal-optics characteristics of [N(CH3)(4)](2)ZnCl4:Ni2+ crystals with correlated motion of tetrahedral groups

机译:[N(CH3)(4)](2)ZnCl4:Ni2 +晶体的晶体光学特性与四面体基团的相关运动的温度依赖性

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摘要

The optical birefringence, optical indicatrix rotation, and residual intensity have been experimentally investigated in the parent and incommensurate phases of [N(CH3)(4)](2)ZnCl4 crystals doped with Ni2+. The temperature dependences obtained are nonlinear in a wide temperature range (T (i) - 360 K). It is shown that the nature of this nonlinearity is related to the presence of local spatial regions of the correlated motion of tetrahedral groups. It is established that the deformation of tetrahedral groups increases the temperature range of existence of these regions.
机译:在掺有Ni2 +的[N(CH3)(4)](2)ZnCl4晶体的母相和不相称相中,已通过实验研究了光学双折射,光学指示旋转和残余强度。所获得的温度依赖性在宽温度范围(T(i)-360 K)中是非线性的。结果表明,这种非线性的性质与四面体群相关运动的局部空间区域的存在有关。已经确定,四面体基团的变形增加了这些区域存在的温度范围。

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