Method for producing a single crystal
AssigneeNGK Insulators, Ltd.
InventorsSoichiro Matsuzawa, Syunzo Mase
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Abstract
A single crystal is produced by previously forming a macrocrystal grain having substantially the same crystal structure as crystal grains composing a polycrystal showing a discontinuous crystal grain growth or forming said macrocrystal grain after preparing said polycrystal in contact with the crystal grains composing the polycrystal and heating such a contacted body at a temperature lower than the temperature causing the discontinuous crystal grain growth of the polycrystal to grow crystal while integrating the above described macrocrystal grain with the crystal grains composing the polycrystal whereby a single crystal is grown.
Claims8
A method for producing a single crystal, comprising:
- forming a polycrystal which has a macrocrystal grain therein or thereon, said polycrystal having the property of a discontinuous crystal grain growth which noticeably increases the crystal growing rate at a given temperature in the course of heating, said macrocrystal grain having substantially the same crystal structure as crystal grains comprising said polycrystal;
- heating said polycrystal having said macrocrystal grain to a temperature lower than the temperature causing discontinuous crystal grain growth of the polycrystal, said heating causing growth of said macrocrystal grain;
- and during said heating, integrating said macrocrystal grain with the crystal grains of said polycrystal so that a single crystal is grown.
Dependencies are inferred from the claim text.