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:
Jul. 15, 2003
Filed:
May. 29, 2001
Sahn Nahm, Seoul, KR;
Chang Hak Choi, Seoul, KR;
Jung In Yang, Seoul, KR;
Jun Hwan Jeong, Inchon, KR;
Byung Kyu Kim, Seoul, KR;
Hwack Joo Lee, Daejeon, KR;
Amotech Co., Ltd., Kyungki-do, KR;
Abstract
The present invention discloses a method for preparing Ba(Zn Ta )O dielectric ceramic compositions. In accordance with the present invention, by adding a small amount of Al O , Ga O , ZrO , or TiO , which can generate metal ion having an atomic value of 3+ or 4+, the problems occurring during the sintering of BZT due to the volatilization of Zn can be solved. Also, the BZT dielectrics obtained from the present method have a Q value of 200,000, which is higher than the pure BZT, a dielectric constant of 28.5 or more and a resonant frequency temperature coefficient of near 0.