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:
May. 10, 1994
Filed:
Sep. 28, 1992
Akira Oishi, Tokyo, JP;
Toshio Usui, Tokyo, JP;
Hidekazu Teshima, Tokyo, JP;
Tadataka Morishita, Tokyo, JP;
Abstract
A substrate material for the preparation of an oxide superconductor includes two different rare earth elements A' and A' in the IIIa group, Ga, and 0, the atomic ratio of these elements being expressed as A'1-xA'xGaO.sub.3 (where 0<x<1), and a mixed crystal material forming a perovskite-type structure having a composition of AGaO.sub.3 with A being at least one of the two rare earth elements A' and A' in the IIIa group, a substrate material for preparing an oxide superconductor includes a mixed crystal material made up of Nd, La, Ga, and O in an atomic ratio of La.sub.1-x Nd.sub.x GaO.sub.3 wherein 0.2.ltoreq.x<1.0, the substrate material forming a GdFeO.sub.3 -type structure; a substrate material for preparing an oxide superconductor includes a mixed material made up of Nd, A.sup.1, Ga, and O in an atomic ratio of A.sup.1.sub.1-x Nd.sub.x GaO.sub.3 where A.sup.1 is a rare earth element excluding La and Nd, and 0.2.ltoreq.x<1.0, the mixed crystal material forming a GdFeO.sub.3 -type structure. A method for the preparation of the oxide superconductor, or a semiconductor, includes forming an intermediate layer of a mixed crystal material of two different rare earth elements A' and A' in the IIIa group, Ga, and O. The atomic ratio of these elements is expressed as A'1-xA'xGaO.sub.3 (where 0<x<1) and the mixed crystal material has a perovskite-type structure whose composition is AGaO.sub.3 with A being at least one of the two rare earth elements A' and A' in the IIIa group.