ANALYSIS OF PERIODIC NONROTATIONAL W-STRIATIONS IN MO SINGLE-CRYSTALS DUE TO NONSTEADY THERMOCAPILLARY CONVECTION

被引：42

作者：

JURISCH, M

LOSER, W

机构：

[1] Central Institute for Solid State Physics and Materials Research, Academy of Sciences of the German Dem. Rep.

来源：

JOURNAL OF CRYSTAL GROWTH | 1990年 / 102卷 / 1-2期

关键词：

D O I：

10.1016/0022-0248(90)90904-Y

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We have investigated the origin of strictly periodic, non-rotational W striations in Mo single crystals grown by electron beam float-zoning. Through a systematic variation of crystal growth parameters, the periodic striations are shown to be due to the transition of the thermocapillary flow from a steady to a single-mode oscillatory state. Critical Marangoni numbers for the transition are estimated and compared with those published for liquids with Pr ≫ 1. © 1990.

引用

页码：214 / 222

页数：9

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