Study of the Features of Concentration Inhomogeneities during the On-Ground-Based Processing of the Space Experiment on the Ge(Ga) Crystal Growth

IF 0.6 4区 材料科学 Q4 CRYSTALLOGRAPHY Crystallography Reports Pub Date : 2024-09-27 DOI:10.1134/S1063774524601242
E. N. Korobeynikova, V. I. Strelov, S. I. Supel’nyak, V. N. Vlasov
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Abstract

The results of the preparation and ground testing of the space experiment for growing Ge(Ga) crystals, planned on board the multifunctional laboratory module as a part of the ISS RS are reported. Under the conditions simulating microgravity, the features of the formation of concentration inhomogeneity in the form of striations when growing crystals under various thermal conditions (in the presence or absence of a free melt surface (Marangoni convection)), as well as when changing technological parameters (variations in growth rate) are investigated. Based on the obtained results of metallographic and electrophysical studies, conclusions are drawn on the peculiarities of the influence of the technological parameters of the crystallization process on the structural perfection of crystals grown under microgravity conditions.

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研究 Ge(Ga)晶体生长空间实验的地面处理过程中的浓度不均匀特征
报告了计划在作为国际空间站 RS 一部分的多功能实验舱上进行的生长 Ge(Ga) 晶体的空间实验的准备和地面测试结果。在模拟微重力条件下,研究了在各种热条件下(存在或不存在自由熔体表面(马兰戈尼对流))以及改变技术参数(生长率变化)时晶体生长过程中以条纹形式形成的浓度不均匀性的特征。根据所获得的金相和电物理研究结果,得出了结晶过程的技术参数对微重力条件下生长的晶体结构完美性的特殊影响的结论。
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来源期刊
Crystallography Reports
Crystallography Reports 化学-晶体学
CiteScore
1.10
自引率
28.60%
发文量
96
审稿时长
4-8 weeks
期刊介绍: Crystallography Reports is a journal that publishes original articles short communications, and reviews on various aspects of crystallography: diffraction and scattering of X-rays, electrons, and neutrons, determination of crystal structure of inorganic and organic substances, including proteins and other biological substances; UV-VIS and IR spectroscopy; growth, imperfect structure and physical properties of crystals; thin films, liquid crystals, nanomaterials, partially disordered systems, and the methods of studies.
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