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Structural characteristics of melt-grown (ZrO2)0.99-(Sc2O3) (Yb2O3)0.01 solid solution crystals and their effect on ionic conductivity
Journal of Crystal Growth ( IF 1.8 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.jcrysgro.2020.125808
A.V. Kulebyakin , M.A. Borik , I.E. Kuritsyna , N.A. Larina , E.E. Lomonova , F.O. Milovich , V.A. Myzina , P.A. Ryabochkina , E.A. Skryleva , N.Yu. Tabachkova , T.V. Volkova

Abstract (ZrO2)0.99-x(Sc2O3)x(Yb2O3)0.01 solid solutions crystals (x = 0.08–0.10) have been grown by directional crystallization of the melt in a cold crucible. Single-phase optically transparent single crystals were obtained only for the (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 composition. The phase composition, local structure and transport properties of the crystals have been studied using X-ray diffraction, Raman, optical and impedance spectroscopy. The dependence of the lattice parameters and the phase composition of (ZrO2)0.99-x(Sc2O3)x(Yb2O3)0.01 solid solutions on Sc2O3 content has been discussed. The (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 single-phase cubic single crystals had the maximum conductivity throughout the entire temperature range. It is shown that the high-temperature conductivity of the (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 single-phase cubic single crystals is close to the conductivity of the (ZrO2)0.90(Sc2O3)0.10 crystals. The results of studying the local structure of crystals by optical spectroscopy are presented.

中文翻译:

熔融生长的 (ZrO2)0.99-(Sc2O3) (Yb2O3)0.01 固溶体晶体的结构特征及其对离子电导率的影响

摘要 (ZrO2)0.99-x(Sc2O3)x(Yb2O3)0.01 固溶体晶体 (x = 0.08–0.10) 已通过熔体在冷坩埚中的定向结晶生长。仅针对 (ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 组成获得单相光学透明单晶。已经使用 X 射线衍射、拉曼、光学和阻抗光谱研究了晶体的相组成、局部结构和传输特性。已经讨论了 (ZrO2)0.99-x(Sc2O3)x(Yb2O3)0.01 固溶体的晶格参数和相组成对 Sc2O3 含量的依赖性。(ZrO2)0.90(Sc2O3)0.09(Yb2O3)0.01 单相立方单晶在整个温度范围内具有最大的电导率。结果表明(ZrO2)0.90(Sc2O3)0.09(Yb2O3)0的高温电导率。01单相立方单晶的电导率接近于(ZrO2)0.90(Sc2O3)0.10晶体。介绍了通过光谱学研究晶体局部结构的结果。
更新日期:2020-10-01
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