Abstract The (Ca1−xSrx)3(VO4)2 crystals were successfully grown by Czochralski method. Sr3(VO4)2 content in the CVO/SVO solid solution was varied from 10 to 45%, which corresponds to chemical compositions of (Ca1−xSrx)3(VO4)2, 0.1≤ x ≤ 0.45. To obtain crystals of optical quality, bulk crystallization rate was decreased from 0.8 to 0.3 cm3/h for the nominally pure Ca3(VO4)2 crystal and Ca1·8Sr1·2(VO4)2 solid solution, respectively. The Ca2·7Sr0·3(VO4)2, Ca2·4Sr0·6(VO4)2, Ca2·1Sr0·9(VO4)2, Ca1·8Sr1·2(VO4)2, Ca1·65Sr1·35(VO4)2 and Ca1·5Sr1·5(VO4)2 polycrystalline solid solutions were prepared by solid-state synthesis. X-ray diffraction analysis and spontaneous Raman spectroscopy were used for investigation powdered polycrystalline material and grinded single crystals. It was estimated that mono-phase solid solutions with a gradually changing structure parameters are formed in the series (Ca1−xSrx)3(VO4)2 with x = 0.10, 0.20, 0.30, 0.40, 0.45. Further increasing Sr3(VO4)2 content in the CVO/SVO solid solution leads to formation of two-phase system. The influence of the chemical composition on the shape and size of ferroelectric domains for as-grown crystalline materials was shown.

中文翻译：

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(Ca1−xSrx)3(VO4)2 固溶体的生长和表征：寻找用于超快拉曼激光器的新材料

摘要 (Ca1−xSrx)3(VO4)2 晶体采用直拉法成功生长。CVO/SVO 固溶体中 Sr3(VO4)2 的含量从 10% 到 45% 不等，这对应于 (Ca1-xSrx)3(VO4)2 的化学成分，0.1≤ x ≤ 0.45。为了获得具有光学质量的晶体，标称纯的 Ca3(VO4)2 晶体和 Ca1·8Sr1·2(VO4)2 固溶体的整体结晶速率分别从 0.8 cm3/h 降低到 0.3 cm3/h。Ca2·7Sr0·3(VO4)2、Ca2·4Sr0·6(VO4)2、Ca2·1Sr0·9(VO4)2、Ca1·8Sr1·2(VO4)2、Ca1·65Sr1·35(VO4)2采用固态合成法制备了Ca1·5Sr1·5(VO4)2多晶固溶体。X 射线衍射分析和自发拉曼光谱用于研究粉状多晶材料和研磨单晶。据估计，在 x = 0.10、0.20、0.30、0.40、0.45 的 (Ca1−xSrx)3(VO4)2 系列中形成了结构参数逐渐变化的单相固溶体。进一步增加 CVO/SVO 固溶体中 Sr3(VO4)2 的含量会导致两相体系的形成。显示了化学成分对生长晶体材料的铁电畴形状和尺寸的影响。