Single-crystal – oriented-crystal – and epitaxy growth processes; – Processes of growth from liquid or supercritical state – Having pulling during growth
Patent
1996-08-23
1999-07-06
Kunemund, Robert
Single-crystal, oriented-crystal, and epitaxy growth processes;
Processes of growth from liquid or supercritical state
Having pulling during growth
117 23, 117 26, 117 33, 117209, 117211, 117910, 117948, C30B 1508
Patent
active
059193042
ABSTRACT:
When producing an oxide-series single crystal by continuously pulling downwardly by .mu. pulling down method, the composition of the single crystal can properly and quickly controlled to continuously produce the single crystal of a constant composition by changing the pulling rate of the single crystal. Preferably, the pulling rate is 20-300 mm/hr, and the pulling rate is decreased with the proceeding of growing of the single crystal.
REFERENCES:
Kon et al, "generation of an interface electric field during crystal growth by .mu. PD method", nippon Kessho Seicho Gakkaishi vol. 23(3) p. 269, 1996.
Uda et al., "Intrinsic LiNbO3 melt species partitioning at the congruent melt composition. III. Choice of the growth parameters for the dynamic congruent-state growth", Journal of Crystal Growth, vol. 15593/4) pp. 229-239, 1995.
Yoon et al, characterization of dislocations in a LiNbO3 single crystal grown by micro pulling down method', crystal Research Technology, vol. 29(8) pp. 1119-1122, 1994.
Yoon et al.'"Growth and characterization of K3Li2-xNb5+xO15+2x micro single crystals formed by the .mu. pulling down method for blue SHG applications", Japanese Journal of Applied Physics. Part 1 vol. 33 (6a), pp. 3510-3513, 1994.
Journal of Crystal Growth, vol. 144, No. 3/04, Dec. 02,1994, pp. 201-206, XP000483659, DAE-HO Yoon et al: "Characterization of LiNbO3 Micro Single Crystals Grownth by the Micro-Pulling-Down Method".
Journal of Crystal Growth, vol. 142, No. 3/04, Sep. 02, 1994, pp. 339-343, XP000468428, Dae-Ho Yoon et al: "Crystal Growth of Dislocation-Free LiNbO3 Single Crystals by Micro Pulling Down Method".
Journal of Crystal Growth, vol. 144, No. 3/04, Dec. 02, 1994, pp. 207-212, XP000483660, Yoon D H et al: "Morphological Aspects of Potassium Lithium Niobate Crystals with Acicular Habit Grown by the Micro-Pulling Down Method".
Extended Abstracts, vol. 94/2, 1994, p. 888 XP000550905, Yoon D H et al: "Growth and SHG Properties on Potassium Lithium Niobate Micro Single Crystals for Blue Laser Applications".
Fukuda Tsuguo
Imaeda Minoru
Imai Katsuhiro
Kunemund Robert
NGK Insulators Ltd.
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