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. 08, 1997
Filed:
Jun. 10, 1996
Katumi Ogi, Omiya, JP;
Tadashi Yonezawa, Omiya, JP;
Tsutomu Atsuki, Omiya, JP;
Keiko Endo, Omiya, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A composition comprising Ba and Sr salts of carboxylic acids represented by the formula: C.sub.n H.sub.2n+1 COOH wherein 3.ltoreq.n.ltoreq.7, and having structures represented by the following formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each represent a hydrogen atom, a methyl group or an ethyl group, and M represents Ba or Sr, can be used to form thin films of Ba.sub.1-x Sr.sub.x Ti.sub.y O.sub.3. A composition comprising a barium carboxylate, a strontium carboxylate and a titanium alkoxide in a mixed solvent of a carboxylic acid and an ester, can also be used to form Ba.sub.1-x Sr.sub.x Ti.sub.y O.sub.3 thin films. The proportion of the mixed solvent is 2-11 molar times as much as the Ti. A composition comprising salts of carboxylic acids represented by R.sup.a COOH wherein R.sup.a is a linear or branched alkyl group having 3-7 carbon atoms, as the Ba and Sr sources, and Ti(OR.sup.b).sub.4 wherein R.sup.b is a linear or branched alkyl group having 1-7 carbon atoms, as the Ti source, can also be used to form thin films of Ba.sub.1-x Sr.sub.x TiO.sub.3.