Comparative studies of the features of the formation of impurity heterogeneity in GaSb:Te crystals in the case of directed crystallization under space and ground conditions

Serebryakov Y.A.; Vlasov V.N.; Sidorov V.S.; Prokhorov I.A.; Shulpina I.L.; Korobeinikova E.N.

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Comparative studies of the features of the formation of impurity heterogeneity in GaSb:Te crystals in the case of directed crystallization under space and ground conditions

机译：在空间和地面条件下定向结晶的情况下，GaSb：Te晶体中杂质异质性形成特征的比较研究

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The results of comparative studies concerned with the formation of impurity heterogeneity in GaSb:Te crystals grown at the POLIZON facility by the Bridgman method under space and ground conditions are presented. Crystallization is carried out in the same temperature-time modes of the heaters: on board the Foton-M 3 spacecraft in space and by the vertical Bridgman method under conditions of weakened thermogravitational convection on Earth. In both cases, Marangoni convection is eliminated, and the effect of vibration microaccelerations on the ampoule that contains the melt is minimized. The microuniformity of the dopant distribution in the crystal areas that are recrystallized by the Bridgman method is higher than that in the seed grown by the Czochralski method. Microuniformity is higher under space conditions than under ground conditions with weakened thermogravitational convection. Spectral Fourier analysis of the spreading resistance distribution R _s reveals the characteristic periods of heat and mass transfer processes in the melts under ground and space conditions.

机译：提出了关于在空间和地面条件下通过Bridgman方法在POLIZON设施中生长的GaSb：Te晶体中杂质异质形成的比较研究结果。结晶是在与加热器相同的温度-时间模式下进行的：在太空中的Foton-M 3航天器上，并通过垂直Bridgman方法在地球上热重对流减弱的条件下进行结晶。在这两种情况下，都消除了Marangoni对流，并且使振动微加速度对包含熔体的安瓿的影响最小化。通过Bridgman方法重结晶的晶体区域中的掺杂剂分布的微观均匀性高于通过Czochralski方法生长的种子中的掺杂物的微观均匀性。在热力对流较弱的条件下，在空间条件下的均匀度要高于在地面条件下的均匀度。扩展电阻分布R _s的光谱傅里叶分析揭示了在地面和空间条件下熔体中传热和传质过程的特征周期。

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《Journal of surface investigation: x-ray, synchrotron and neutron techniques》 |2012年第4期|共8页
作者
Serebryakov Y.A.; Vlasov V.N.; Sidorov V.S.; Prokhorov I.A.; Shulpina I.L.; Korobeinikova E.N.;
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中图分类原子核物理学、高能物理学;
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1. Comparative studies of the features of the formation of impurity heterogeneity in GaSb:Te crystals in the case of directed crystallization under space and ground conditions [J] . Serebryakov Y.A., Vlasov V.N., Sidorov V.S., Journal of surface investigation: x-ray, synchrotron and neutron techniques . 2012,第4期

机译：在空间和地面条件下定向结晶的情况下，GaSb：Te晶体中杂质异质性形成特征的比较研究
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Comparative studies of the features of the formation of impurity heterogeneity in GaSb:Te crystals in the case of directed crystallization under space and ground conditions

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