Method of suppressing convection in a fluid in a cylindrical vessel
AssigneeSumitomo Electric Industries, Ltd.
InventorSHINSUKE FUJIWARA
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Abstract
An object of the present invention is to provide a method of suppressing convection of a fluid in a cylindrical vessel by means of realizing an environment under micro gravity which can be maintained for such a long time that growth of a large-sized crystal be economically effected. The feature of the present invention consists in a method of suppressing occurrence of natural convection of a fluid in a cylindrical vessel, when a density gradient due to difference in temperature, concentration or partial pressure is added to the gas or liquid filled in the cylindrical vessel along the central axis of the vessel, characterized by maintaining horizontal the vessel and rotating it around the central axis.
Claims9
A method of suppressing occurrence of natural convection of a fluid in a cylindrical vessel, when a density gradient due to difference in temperature, concentration or partial pressure is added to the gas or liquid filled in the cylindrical vessel along the central axis of the vessel, characterized by maintaining horizontal the vessel and rotating it around the central axis.
A method for the growth of a compound semiconductor crystal of Group II-VI elements of Periodic Table in a cylindrical vessel by a chemical vapor transport method using iodine as a transport agent, characterized by carrying out the growth of the crystal while maintaining the vessel horizontal, holding a solid raw material at one end of the vessel to secure a crystal growth zone and rotating the vessel around the central axis.
Dependencies are inferred from the claim text.