KR101301251B1 - 포논-차단 절연층을 갖는 메모리 셀 - Google Patents
포논-차단 절연층을 갖는 메모리 셀 Download PDFInfo
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- KR101301251B1 KR101301251B1 KR1020110118134A KR20110118134A KR101301251B1 KR 101301251 B1 KR101301251 B1 KR 101301251B1 KR 1020110118134 A KR1020110118134 A KR 1020110118134A KR 20110118134 A KR20110118134 A KR 20110118134A KR 101301251 B1 KR101301251 B1 KR 101301251B1
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- H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
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- H01F41/305—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates for applying nanostructures, e.g. by molecular beam epitaxy [MBE] for applying spin-exchange-coupled multilayers, e.g. nanostructured superlattices applying the spacer or adjusting its interface, e.g. in order to enable particular effect different from exchange coupling
- H01F41/307—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates for applying nanostructures, e.g. by molecular beam epitaxy [MBE] for applying spin-exchange-coupled multilayers, e.g. nanostructured superlattices applying the spacer or adjusting its interface, e.g. in order to enable particular effect different from exchange coupling insulating or semiconductive spacer
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- H10N50/00—Galvanomagnetic devices
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- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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Abstract
Description
도 2는 도 1의 디바이스의 메모리 어레이로부터 데이터를 판독하고 메모리 어레이에 데이터를 기록하기 위해 사용되는 회로를 도시한다.
도 3은 메모리 어레이의 메모리 셀에 데이터가 기록될 수 있는 방식을 일반적으로 예시한다.
도 4는 도 3의 메모리 셀로부터 데이터가 판독될 수 있는 방식을 일반적으로 예시한다.
도 5는 본 발명의 다양한 실시예들에 따라 구성되고 동작되는 예시적 메모리 스택을 도시한다.
도 6은 본 발명의 다양한 실시예들에 따라 구성되고 동작되는 예시적 메모리 스택의 등각도를 도시한다.
도 7은 메모리 스택의 예시적인 대안적 구성을 표시한다.
도 8a-8c는 절연층에 전도성 피처들을 형성할 수 있는 예시적 단계들을 도시한다.
도 9는 포논들 및 전기 신호들의 전달과 관련되는 예시적인 동작 데이터 그래프들이다.
도 10은 본 발명의 다양한 실시예들에 따라 수행되는 예시적인 셀 제조 루틴의 흐름도 및 대응하는 예시적 자기 스택들을 제공한다.
Claims (20)
- 자기 스택(magnetic stack)으로서,
터널 정션(tunnel junction), 강자성 프리층(free layer), 핀드층(pinned layer), 및 적어도 하나의 절연층을 포함하며, 상기 적어도 하나의 절연층은 적어도 하나의 전도성 피처(conductive feature)를 통한 전기 전달(electrical transmission)을 허용하면서 포논들을 차단하는 전기적 및 열적 절연성 물질로 구성되는,
자기 스택. - 제 1 항에 있어서,
상기 전도성 피처는 포논 전달을 차단하면서 전기 전도성(electrical conductivity)을 허용하도록 치수설정(dimensioned)되는,
자기 스택. - 제 1 항에 있어서,
상기 전도성 피처는 포논 파장보다 작은 전기 신호 파장으로 인해 포논들을 차단하는,
자기 스택. - 제 1 항에 있어서,
상기 전기 전달은 프로그래밍 전류인,
자기 스택. - 제 4 항에 있어서,
상기 프로그래밍 전류는 상기 프리층 상에 공통 스핀 토크를 부가하도록 균일한 스핀을 갖는,
자기 스택. - 제 1 항에 있어서,
상기 전기 전달은 판독 전류이며 상기 프리층은 자기장으로 프로그래밍되는,
자기 스택. - 제 1 항에 있어서,
상기 전도성 피처는 상기 절연층 보다 낮은 자기장 저항(resistance)을 갖는,
자기 스택. - 제 1 항에 있어서,
상기 절연층은 NiO인,
자기 스택. - 제 1 항에 있어서,
상기 절연층은 포논-차단 전자 전달(PBET) 물질인,
자기 스택. - 제 1 항에 있어서,
상기 전도성 피처는 포논-차단 전자 전달(PBET) 물질로 채워지는,
자기 스택. - 제 1 항에 있어서,
상기 전도성 피처는 상기 절연층을 통해 상기 핀드층으로부터 연장하는,
자기 스택. - 제 1 항에 있어서,
다수의 전도성 피처들이 상기 절연층 내에 선택된 길이 및 폭을 가지는 미리결정된 패턴으로 배열되는,
자기 스택. - 제 1 항에 있어서,
전도성 피처들 및 제 1 밀도를 갖는 제 1 절연층이 제 2 절연층에 접촉하게 인접해 있고 상기 제 2 절연층은 전도성 피처들을 갖지 않으며 상기 제 1 밀도 보다 더 큰 제 2 밀도를 가지는,
자기 스택. - 제 13 항에 있어서,
상기 제 1 및 제 2 절연층들은 동일한 물질로 구성되는,
자기 스택. - 제 1 항에 있어서,
제 1 절연층이 상기 핀드층에 접촉하게 인접해있고 제 2 절연층이 상기 프리층에 접촉하게 인접해있는,
자기 스택. - 자기 스택을 형성하기 위한 방법으로서,
터널 정션, 강자성 프리층, 핀드층 및 전기적 및 열적 절연성 물질로 구성되는 적어도 하나의 절연층을 제공하는 단계; 및
상기 절연층의 적어도 하나의 전도성 피처를 통한 전기 전달(electrical transmission)을 허용하면서 포논들을 차단하는 단계
를 포함하는,
자기 스택을 형성하기 위한 방법. - 제 16 항에 있어서,
상기 전도성 피처는 미리결정된 폭을 갖는 절연 물질속으로 전도성 물질을 주입하기 위해 상기 전도성 물질을 통해 미리결정된 전류를 통과시킴으로써 형성되는,
자기 스택을 형성하기 위한 방법. - 제 16 항에 있어서,
상기 전도성 피처는 미리결정된 폭을 갖는 절연층의 부분들을 제거하고 포논-차단 전자 전달(PBET) 물질로 제거된 부분들을 채움으로써 형성되는,
자기 스택을 형성하기 위한 방법. - 제 16 항에 있어서,
상기 절연층은 상기 프리층에서의 자화를 프로그래밍하기 위해 요구되는 전류를 낮추기 위해 상기 터널 정션 부근에서 열을 보유하는,
자기 스택을 형성하기 위한 방법. - 메모리 셀로서,
터널 정션, 강자성 프리층, 및 핀드층; 및
제 1 및 제 2 절연층
을 포함하며, 상기 제 1 및 제 2 절연층 각각은 전기적 및 열적 절연성 물질로 구성되며, 상기 제 1 절연층은 상기 제 1 절연층을 통한 전기 전달을 허용하면서 포논들을 차단하는 적어도 하나의 전도성 피처를 가지며, 상기 제 2 절연층은 상기 제 1 절연층 보다 큰 밀도를 가지며 어떠한 전도성 피처들도 존재하지 않는,
메모리 셀.
Applications Claiming Priority (2)
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US12/947,516 | 2010-11-16 | ||
US12/947,516 US8405171B2 (en) | 2010-11-16 | 2010-11-16 | Memory cell with phonon-blocking insulating layer |
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KR20120052869A KR20120052869A (ko) | 2012-05-24 |
KR101301251B1 true KR101301251B1 (ko) | 2013-08-28 |
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US (2) | US8405171B2 (ko) |
JP (1) | JP5529102B2 (ko) |
KR (1) | KR101301251B1 (ko) |
CN (1) | CN102468320B (ko) |
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EP2760025B1 (en) | 2013-01-23 | 2019-01-02 | Crocus Technology S.A. | TAS-MRAM element with low writing temperature |
US9130143B2 (en) * | 2013-09-10 | 2015-09-08 | Toshihiko Nagase | Magnetic memory and method for manufacturing the same |
KR20160061746A (ko) * | 2014-11-24 | 2016-06-01 | 에스케이하이닉스 주식회사 | 전자 장치 및 그 제조 방법 |
KR20160073851A (ko) | 2014-12-17 | 2016-06-27 | 에스케이하이닉스 주식회사 | 전자 장치 및 그 제조 방법 |
KR102247789B1 (ko) | 2019-11-12 | 2021-05-03 | 울산과학기술원 | 유전 박막, 및 이를 포함하는 멤커패시터 |
KR102259923B1 (ko) | 2019-11-15 | 2021-06-02 | 광주과학기술원 | 유전박막, 이를 포함하는 멤커패시터, 이를 포함하는 셀 어레이, 및 그 제조 방법 |
KR102373279B1 (ko) * | 2020-08-21 | 2022-03-15 | 한국과학기술원 | 계층구조 단위 셀을 가지는 음향양자 결정 |
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KR20120052869A (ko) | 2012-05-24 |
JP2012109567A (ja) | 2012-06-07 |
US8405171B2 (en) | 2013-03-26 |
CN102468320A (zh) | 2012-05-23 |
CN102468320B (zh) | 2017-11-14 |
US20130200476A1 (en) | 2013-08-08 |
US20120119313A1 (en) | 2012-05-17 |
US8860157B2 (en) | 2014-10-14 |
JP5529102B2 (ja) | 2014-06-25 |
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