KR100719004B1 - 강유전체막 적층체, 강유전체 메모리, 압전 소자, 액체분사 헤드 및 프린터 - Google Patents
강유전체막 적층체, 강유전체 메모리, 압전 소자, 액체분사 헤드 및 프린터 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
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- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
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- B41J2/01—Ink jet
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Abstract
Description
Claims (20)
- 전극과, 그 전극 상에 형성된 PZT계 강유전체막을 포함하는 강유전체막 적층체에 있어서,상기 PZT계 강유전체막은, Ti 조성 중, 2.5mol% 이상 40mol% 이하를 Nb로 치환하고,상기 전극은, 상기 PZT계 강유전체막으로부터 확산되는 산소를 거의 포함하지 않는 강유전체막 적층체.
- 제1항에 있어서,상기 PZT계 강유전체막의 강유전체는 일반식 PbZrxTiyNbz로 표현되고, 이하의 관계,x+y+z=10≤x≤0.975가 성립되는 강유전체막 적층체.
- 제1항에 있어서,상기 전극에서의 상기 PZT계 강유전체막으로부터의 산소의 확산 거리는, 러더포드 후방 산란 분석법(RBS) 및 핵반응 분석법(NRA)에 의한 프로파일로부터 구하 면 15㎚ 이하인 강유전체막 적층체.
- 제1항에 있어서,상기 전극에서의 상기 PZT계 강유전체막으로부터의 산소의 확산 거리는, 오제 전자 분광법(AES)에 의한 프로파일로부터 구하면 30㎚ 이하인 강유전체막 적층체.
- 전극과, 그 전극 상에 형성된 PZT계 강유전체막을 포함하는 강유전체막 적층체에 있어서,상기 PZT계 강유전체막은, Ti 조성 중, 2.5mol% 이상 40mol% 이하를 Nb로 치환하고,상기 PZT계 강유전체막은, 그 PZT계 강유전체막에서의 산소 원자의 비율의 분포가 거의 일정한 강유전체막 적층체.
- 제5항에 있어서,상기 PZT계 강유전체막에서의 산소 원자의 비율의 분포는, 그 PZT계 강유전체막의 막 두께 방향으로의 산소 원자의 비율의 변동을, (최대값-최소값)/(최대값과 최소값의 평균값)으로 나타내고, 러더포드 후방 산란 분석법(RBS) 및 핵반응 분석법(NRA)에 의한 프로파일로부터 구하면 1% 이하인 강유전체막 적층체.
- 제5항에 있어서,상기 PZT계 강유전체막에서의 산소 원자의 비율의 분포는, 그 PZT계 강유전체막의 막 두께 방향으로의 산소 원자의 비율의 변동을, (최대값-최소값)/(최대값과 최소값의 평균값)으로 나타내고, 오제 전자 분광법(AES)에 의한 프로파일로부터 구하면 3% 이하인 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,상기 PZT계 강유전체막은, 그 PZT계 강유전체막에 포함되는 산소의 95% 이상이 페로브스카이트 구조의 산소 위치에 존재하는 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,상기 PZT계 강유전체막은, Zr 조성보다도 Ti 조성이 많은, 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,Ti 조성 중, 5mol% 이상 30mol% 이하를 Nb로 치환한 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,Ti 조성 중, 10mol% 이상 30mol% 이하를 Nb로 치환한 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,상기 PZT계 강유전체막은, 정방정계 및 능면체정계 중 적어도 어느 한쪽의 결정 구조를 갖는 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,0.5mol% 이상의 Si, 혹은 Si 및 Ge를 포함하는 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,0.5mol% 이상, 5mol% 이하의 Si, 혹은 Si 및 Ge를 포함하는 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,상기 PZT계 강유전체막은, 상기 Nb 대신에, 그 전부 혹은 일부가 Ta, W, V 및 Mo 중 적어도 1종에 의해 치환된 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항에 있어서,상기 전극은, 백금족 원소 혹은 그 합금으로 이루어지는 강유전체막 적층체.
- 제1항 내지 제7항 중 어느 한 항의 강유전체막 적층체를 이용한 강유전체 메모리.
- 제1항 내지 제7항 중 어느 한 항의 강유전체막 적층체를 이용한 압전 소자.
- 제18항의 압전 소자를 이용한 액체 분사 헤드.
- 제19항의 액체 분사 헤드를 이용한 프린터.
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US7358113B2 (en) * | 2004-01-28 | 2008-04-15 | Zettacore, Inc. | Processing systems and methods for molecular memory |
JP5019020B2 (ja) | 2005-03-31 | 2012-09-05 | セイコーエプソン株式会社 | 誘電体膜の製造方法及び圧電体素子の製造方法並びに液体噴射ヘッドの製造方法 |
KR100754612B1 (ko) * | 2006-01-26 | 2007-09-05 | 삼성전자주식회사 | 서로 다른 이동 통신 방식 간에 패킷 호 재접속 지연시간을 최소화하기 위한 핸드오버 방법 및 이를 위한멀티모드 단말기 |
JP4164701B2 (ja) | 2006-05-31 | 2008-10-15 | セイコーエプソン株式会社 | 強誘電体キャパシタ、強誘電体キャパシタの製造方法、強誘電体メモリおよび強誘電体メモリの製造方法 |
JP5024518B2 (ja) * | 2006-09-21 | 2012-09-12 | セイコーエプソン株式会社 | アクチュエータ装置及び液体噴射ヘッド並びに画像記録装置 |
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US7839060B2 (en) * | 2007-10-18 | 2010-11-23 | Tdk Corporation | Piezoelectric ceramic composition and oscillator |
JP4452752B2 (ja) * | 2008-09-30 | 2010-04-21 | 富士フイルム株式会社 | 鉛含有圧電膜およびその作製方法、鉛含有圧電膜を用いる圧電素子、ならびにこれを用いる液体吐出装置 |
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JP5935187B2 (ja) * | 2012-08-10 | 2016-06-15 | 日本特殊陶業株式会社 | 圧電セラミックスおよびこれを用いた圧電アクチュエータ |
JP6182968B2 (ja) | 2012-08-14 | 2017-08-23 | 株式会社リコー | 電気機械変換素子、液滴吐出ヘッド、画像形成装置及び電気機械変換素子の製造方法 |
EP3144987B1 (en) * | 2014-05-15 | 2018-12-12 | Konica Minolta, Inc. | Ferroelectric thin film, substrate with piezoelectric thin film, piezoelectric actuator, inkjet head, and inkjet printer |
JP6428345B2 (ja) | 2015-02-16 | 2018-11-28 | 三菱マテリアル株式会社 | Ptzt圧電体膜及びその圧電体膜形成用液組成物の製造方法 |
WO2021225075A1 (ja) * | 2020-05-08 | 2021-11-11 | 富士フイルム株式会社 | 高分子圧電フィルム |
JPWO2022255121A1 (ko) * | 2021-06-03 | 2022-12-08 | ||
CN116217226B (zh) * | 2023-02-23 | 2024-03-12 | 中国科学院上海硅酸盐研究所 | 一种bs-pt基高温压电陶瓷材料及其制备方法 |
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EP1589566A2 (en) | 2005-10-26 |
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