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:
Dec. 18, 2012
Filed:
May. 03, 2010
Kazuo Aizawa, Chuo-ku, JP;
Isamu Asano, Chuo-ku, JP;
Junji Tominaga, Tsukuba, JP;
Alexander Kolobov, Tsukuba, JP;
Paul Fons, Tsukuba, JP;
Robert Simpson, Tsukuba, JP;
Kazuo Aizawa, Chuo-ku, JP;
Isamu Asano, Chuo-ku, JP;
Junji Tominaga, Tsukuba, JP;
Alexander Kolobov, Tsukuba, JP;
Paul Fons, Tsukuba, JP;
Robert Simpson, Tsukuba, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
To include a superlattice laminate having laminated thereon a first crystal layer of which crystal lattice is a cubic crystal and in which positions of constituent atoms are reversibly replaced by application of energy, and a second crystal layer having a composition different from that of the first crystal layer, and an orientation layer that is an underlaying layer of the superlattice laminate and causes a laminated surface of the first crystal layer to be (111)-orientated. According to the present invention, the laminated surface of the first crystal layer can be (111)-orientated by using the orientation layer as an underlaying layer. In the first crystal layer of which laminated surface is (111)-orientated, a crystal structure reversibly changes when a relatively low energy is applied. Therefore, characteristics of a superlattice device having this crystal layer can be enhanced.