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Title:
Poly alpha-amino acid and the ferroelectric-random-access-memory element using it
Document Type and Number:
Japanese Patent JP6112010
Kind Code:
B2
Abstract:
A ferroelectric memory element containing a poly ±-amino acid which is a copolymer containing a glutamic acid-³-ester unit represented by the formula (I): wherein R 1 is a substituted or unsubstituted alkyl group having 1 - 8 carbon atoms, or a benzyl group optionally substituted by a halogen atom, an alkoxy group or a nitro group, and a glutamic acid-³-ester unit represented by the formula (II) : wherein R 2 is an unsubstituted alkyl group having 3 - 16 carbon atoms, or an alkyl group having 1 - 6 carbon wherein a part or all of hydrogen atom is substituted by a halogen atom, an alicyclic hydrocarbon group having 3 - 12 carbon atoms, an alkoxy group having 1 - 6 carbon atoms, a cyano group, a phenyl group (a part or all of hydrogen atom is optionally substituted by a halogen atom or an alkoxy group), a phenylalkoxy group (a part or all of hydrogen atom is optionally substituted by a halogen atom or an alkoxy group), or a phenylalkylcarbamate group (a part or all of hydrogen atom is optionally substituted by a halogen atom or an alkoxy group), provided that it is not the same as R 1 , wherein the content ratio of the unit of the formula (I) and the unit of the formula (II) ((I)/(II)) is 10/90 - 90/10 in a molar ratio.

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Inventors:
Ken Ohashi
Uemura Sei
Manabu Kitazawa
Toshihide Kamata
Application Number:
JP2013514078A
Publication Date:
April 12, 2017
Filing Date:
May 11, 2012
Export Citation:
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Assignee:
AJINOMOTO CO.,LTD.
International Classes:
H01L21/8246; C08G69/10; H01L27/105; H01L27/28; H01L29/786; H01L51/05; H01L51/30
Domestic Patent References:
JP2005311336A2005-11-04
JP2007073557A2007-03-22
JPH0586180A1993-04-06
JPS62260827A1987-11-13
JPH01261420A1989-10-18
JPH03156430A1991-07-04
JPH0824625A1996-01-30
JPS63159491A1988-07-02
JPH04172421A1992-06-19
JPH0234631A1990-02-05
JPH04102827A1992-04-03
JPS63128317A1988-05-31
JPH11217432A1999-08-10
JP2005311336A2005-11-04
JP2007073557A2007-03-22
JPH0586180A1993-04-06
JPS62260827A1987-11-13
JPH01261420A1989-10-18
JPH03156430A1991-07-04
JPH0824625A1996-01-30
JPS63159491A1988-07-02
JPH04172421A1992-06-19
JPH0234631A1990-02-05
Attorney, Agent or Firm:
Takashima Ichi
Kyoko Doi
Mitsunori Kamata
Yaeko Tamura
Kenji Yamamoto
Murata Miyuki
Junzo Koike
Hirofumi Toma



 
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