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:
Oct. 04, 2011
Filed:
Aug. 23, 2007
Hironori Wakana, Ohira-machi, JP;
Seiji Adachi, Narashino, JP;
Koji Tsubone, Higashihiroshima, JP;
Keiichi Tanabe, Mito, JP;
Hironori Wakana, Ohira-machi, JP;
Seiji Adachi, Narashino, JP;
Koji Tsubone, Higashihiroshima, JP;
Keiichi Tanabe, Mito, JP;
Chugoku Electric Power Co., Inc., Hiroshima, JP;
International Superconductivity Technology Center, The Juridical Foundation, Tokyo, JP;
Abstract
A Josephson device includes a first superconducting electrode layer, a barrier layer and a second superconducting electrode layer that are successively stacked. The first and second superconducting electrode layers are made of an oxide superconductor material having (RE)(AE)CuOas a main component, where an element RE is at least one element selected from a group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu, and an element AE is at least one element selected from a group consisting of Ba, Sr and Ca. The barrier layer is made of a material that includes the element RE, the element AE, Cu and oxygen, where in cations within the material forming the barrier layer, a Cu content is in a range of 35 At. % to 55 At. % and an RE content is in a range of 12 At. % to 30 At. %, and the barrier layer has a composition different from compositions of the first and second superconducting electrode layers.