A heat shield to control thermal gradients, melt convection, and interface shape during shouldering in Czochralski oxide growth

被引：15
作者：
Rojo, JC
Diéguez, E
Derby, JJ
机构：
[1] Univ Minnesota, Army HPC Res Ctr, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA
[2] Univ Minnesota, Minnesota Supercomp Inst, Minneapolis, MN 55455 USA
[3] Univ Autonoma Madrid, Dept Fis Mat, E-28049 Madrid, Spain
来源：
JOURNAL OF CRYSTAL GROWTH | 1999年 / 200卷 / 1-2期
关键词：
Czochralski growth system; melt-crystal interface;
D O I：
10.1016/S0022-0248(98)01250-0
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
A modification of the Czochralski growth system consisting of a circular disk attached to the pulling rod has been used during the shouldering of Bi12SiO20 Single crystals. Experimental results show significant changes to the melt-crystal interface shape and faceting behavior from the use of disks of different materials. A simple mathematical analysis of enclosure radiation provides a self-consistent explanation for the observed changes in terms of system thermal gradients and the intensity of melt convection. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：329 / 334
页数：6
相关论文
共 25 条
[1]   CONDITIONS OF MAINTENANCE OF A FLAT CRYSTAL MELT INTERFACE DURING CZOCHRALSKI GROWTH OF BISMUTH GERMANIUM OXIDE SINGLE-CRYSTALS [J].
BERKOWSKI, M ;
ILIEV, K ;
NIKOLOV, V ;
PESHEV, P ;
PIEKARCZYK, W .
JOURNAL OF CRYSTAL GROWTH, 1991, 108 (1-2) :225-232
[2]  
BRANDLE CD, 1980, CRYSTAL GROWTH
[3]   CZOCHRALSKI GROWTH OF BI12SIO20 CRYSTALS [J].
BRICE, JC ;
BRUTON, TM ;
HILL, OF ;
WHIFFIN, PAC .
JOURNAL OF CRYSTAL GROWTH, 1974, 24 (OCT) :429-431
[4]   FLOW TRANSITIONS AND INTERFACE SHAPES IN CZOCHRALSKI GROWTH OF OXIDE CRYSTALS [J].
CARRUTHERS, JR .
JOURNAL OF CRYSTAL GROWTH, 1976, 36 (02) :212-214
[5]   GROWTH DEFECTS IN CALCIUM TUNGSTATE SINGLE CRYSTALS [J].
COCKAYNE, B ;
ROBERTSON, DS ;
BARDSLEY, W .
BRITISH JOURNAL OF APPLIED PHYSICS, 1964, 15 (10) :1165-&
[6]   INTERFACE SHAPE CHANGES DURING CZOCHRALSKI GROWTH OF GADOLINIUM GALLIUM GARNET SINGLE-CRYSTALS [J].
COCKAYNE, B ;
LENT, B ;
ROSLINGTON, JM .
JOURNAL OF MATERIALS SCIENCE, 1976, 11 (02) :259-263
[7]   FACETTING AND OPTICAL PERFECTION IN CZOCHRALSKI GROWN GARNETS AND RUBY [J].
COCKAYNE, B ;
CHESSWAS, M ;
GASSON, DB .
JOURNAL OF MATERIALS SCIENCE, 1969, 4 (05) :450-&
[8]   ON THE QUASI-STEADY-STATE ASSUMPTION IN MODELING CZOCHRALSKI CRYSTAL-GROWTH [J].
DERBY, JJ ;
BROWN, RA .
JOURNAL OF CRYSTAL GROWTH, 1988, 87 (2-3) :251-260
[9]  
KVAPIL J, 1981, J CRYST GROWTH, V52, P542, DOI 10.1016/0022-0248(81)90336-5
[10]   MEASUREMENTS OF OPTICAL-PROPERTIES OF SOME MOLTEN OXIDES [J].
NASON, DO ;
YEN, CT ;
TILLER, WA .
JOURNAL OF CRYSTAL GROWTH, 1990, 106 (2-3) :221-226
123