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Title:
MAGNETIC STORAGE ELEMENT, MAGNETIC STORAGE DEVICE, ELECTRONIC APPLIANCE, AND METHOD FOR MANUFACTURING MAGNETIC STORAGE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2018/159057
Kind Code:
A1
Abstract:
Provided are a magnetic storage element, a magnetic storage device, and an electronic appliance. The magnetic storage element stores multi-value information and comprises: a plurality of tunnel junction elements (20, 30) that are electrically connected in parallel with each other and respectively include reference layers (23, 33) in which the magnetization direction is fixed, storage layers (25, 35) in which the magnetization direction can be reversed, and insulator layers (24, 34) that are sandwiched between the reference layers and the storage layers. The plurality of tunnel junction elements have the same film configurations. The individual layers of the film configurations are formed of the same materials and have the same thicknesses. The cross-section shape of each of the plurality of tunnel junction elements when the tunnel junction elements are cut in a stacking direction is a polygonal shape having an upper side and a lower side that are parallel to each other. The ratios of the lower sides to the upper sides (W1B/W1T, W2B/W2T) are different in the plurality of tunnel junction elements.

Inventors:
UCHIDA, Hiroyuki (4-14-1 Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
HOSOMI, Masanori (4-14-1 Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
OHMORI, Hiroyuki (4-14-1 Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
BESSHO, Kazuhiro (4-14-1 Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
HIGO, Yutaka (4-14-1 Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
SATO, Yo (4-14-1 Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
HASE, Naoki (4-14-1 Asahi-cho, Atsugi-sh, Kanagawa 14, 〒2430014, JP)
Application Number:
JP2017/044209
Publication Date:
September 07, 2018
Filing Date:
December 08, 2017
Export Citation:
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Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORPORATION (4-14-1, Asahi-cho Atsugi-sh, Kanagawa 14, 〒2430014, JP)
International Classes:
H01L21/8239; H01L27/105; H01L29/82; H01L43/08; H01L43/12
Foreign References:
JP2012119683A2012-06-21
JP2013058522A2013-03-28
JP2014041693A2014-03-06
JP2015185581A2015-10-22
JP2002230965A2002-08-16
US20160267957A12016-09-15
Attorney, Agent or Firm:
KAMEYA, Yoshiaki et al. (HAZUKI INTERNATIONAL YOTSUYA, Daiichi Tomizawa Building 3-1-3, Yotsuya, Shinjuku-k, Tokyo 04, 〒1600004, JP)
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