The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 2002
Filed:
Feb. 20, 2001
Ho-Yong Lee, Seoul, KR;
Jae-Suk Kim, Seoul, KR;
Jong-Hong Lee, Choongchung-Nam-Do, KR;
Tae-Moo Hur, Kyeongki-Do, KR;
Doe-Yeon Kim, Seoul, KR;
Nong-Moon Hwang, Seoul, KR;
Byoung-Ki Lee, Taejeon-Kwangyeoksi, KR;
Sung-Yoon Chung, Seoul, KR;
Suk-Joong L. Kang, Taejeon-Kwangyeoksi, KR;
Ceracomp Co., Ltd., Asan-Si, KR;
Abstract
The invention relates to a method for growing single crystals of barium titanate [BaTiO ] and barium titanate solid solutions [(Ba M )(Ti N )O ]. This invention is directed to a method for growing single crystals of barium titanate or barium titanate solid solutions showing the primary and secondary abnormal grain growths with increasing temperature higher than the liquid formation temperature, characterized by comprising the step for a few secondary abnormal grains to continue to grow at a temperature slightly below the critical temperature where the secondary abnormal grain growth starts to occur. The method for growing single crystals of barium titanate or barium titanate solid solutions according to this invention has an advantage to provide an effective low cost in manufacturing process for single crystals by using usual heat-treatment process without special equipments. The method for growing single crystals of barium titanate and barium titanate solid solutions according to this invention can be also applicable to other material systems showing abnormal grain growth behavior.