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:
Apr. 09, 2013
Filed:
Mar. 04, 2011
Takayuki Tsukamoto, Kanagawa-ken, JP;
Tsukasa Nakai, Tokyo, JP;
Chikayoshi Kamata, Kanagawa-ken, JP;
Mariko Hayashi, Chiba-ken, JP;
Fumihiko Aiga, Kanagawa-ken, JP;
Takeshi Yamaguchi, Kanagawa-ken, JP;
Takayuki Tsukamoto, Kanagawa-ken, JP;
Tsukasa Nakai, Tokyo, JP;
Chikayoshi Kamata, Kanagawa-ken, JP;
Mariko Hayashi, Chiba-ken, JP;
Fumihiko Aiga, Kanagawa-ken, JP;
Takeshi Yamaguchi, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, an information recording and reproducing device includes a recording layer and a driving unit. The recording layer includes a first layer containing a first compound. The first compound includes a first positive ion element. The first positive ion element is made of a transition metal element and serves as a first positive ion. The second positive ion element serves as a second positive ion. The driving unit is configured to generate a phase change in the recording layer and to record information by at least one of application of a voltage and application of a current to the recording layer. The coordination number of the first positive ion element at a position of a second coordination of the second positive ion element is 80% or more and less than 100% of the coordination number when the first compound is assumed to be a perfect crystal.