Resistance variable element

US8309946B2 · kind B2 · utility

Assignee

• PANASONIC HOLDINGS CORPORATION · JP

Inventors

• Satoru Mitani · Osaka, JP
• Shunsaku Muraoka · Osaka, JP
• Yoshihiko Kanzawa · Yawata, JP
• Koji Katayama · Nara, JP
• Ryoko Miyanaga · Nara, JP
• Satoru Fujii · Osaka, JP
• Takeshi Takagi · Kyoto, JP

Key dates

• Filing date: Jul 22, 2009
• Grant date: Nov 13, 2012
• Expiry date: Oct 9, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N70/8833

Abstract

A resistance variable element of the present invention comprises a first electrode (103), a second electrode (107), and a resistance variable layer which is interposed between the first electrode (103) and the second electrode (107) to contact the first electrode (103) and the second electrode (107), the resistance variable layer being configured to change in response to electric signals with different polarities which are applied between the first electrode (103) and the second electrode (107), the resistance variable layer comprising an oxygen-deficient transition metal oxide layer, and the second electrode (107) comprising platinum having minute hillocks (108).