KR20150030291A - 자기 기억 소자 및 그 제조 방법 - Google Patents
자기 기억 소자 및 그 제조 방법 Download PDFInfo
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- KR20150030291A KR20150030291A KR20130108070A KR20130108070A KR20150030291A KR 20150030291 A KR20150030291 A KR 20150030291A KR 20130108070 A KR20130108070 A KR 20130108070A KR 20130108070 A KR20130108070 A KR 20130108070A KR 20150030291 A KR20150030291 A KR 20150030291A
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- tunnel junction
- magnetic tunnel
- ion implantation
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- G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
- G11C11/161—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect details concerning the memory cell structure, e.g. the layers of the ferromagnetic memory cell
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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Abstract
Description
도 1b 내지 도 5b는 각각 도 1a 내지 도 5a의 A 부분들의 확대도들이다.
도 6은 본 발명의 실시예들에 따른 자기 기억 소자의 격리 영역 및 자기 터널 접합 요소(magnetic tunnel junction part) 를 형성하는 방법을 나타내는 플로우차트(flowchart)이다.
도 7a는 본 발명의 실시예들에 따른 자기 기억 소자를 나타내는 단면도이다.
도 7b는 도 7a의 A 부분의 확대도이다.
도 8은 본 발명의 일 실시예에 따른 자기 기억 소자의 자기 터널 접합 요소의 변형예를 나타내는 단면도이다.
도 9는 본 발명의 실시예들에 따른 자기 기억 소자들을 포함하는 전자 시스템들의 일 예를 나타내는 블록도이다.
도 10은 실시예들에 따른 자기 기억 소자들을 포함하는 메모리 카드들의 일 예를 나타내는 블록도이다.
120: 자기 터널 접합막 121: 자기 터널 접합 요소
122: 제1 불순물 주입 영역 122a: 격리 영역
140: 마스크막 140a: 마스크 패턴
130: 상부 전극막 130a: 상부 전극
125: 도전 배리어막 125a: 도전 배리어 패턴
127: 금속막 127a: 금속 패턴
135: 하드마스크막 135a: 하드마스크 패턴
145: 제1 캡핑 절연막 150: 제1 이온 주입 공정
155: 제2 캡핑 절연막 160: 제2 이온 주입 공정
50: 기준층 51, 51a: 기준 패턴
60: 터널 배리어막 61, 61a: 터널 배리어 패턴
70: 자유층 71, 71a: 자유 패턴
Claims (10)
- 기판 상에 자기 터널 접합막을 형성하는 것;
상기 자기 터널 접합막 상에 마스크 패턴들을 형성하는 것; 및
상기 마스크 패턴들을 이온 주입 마스크로 사용하여, 복수의 이온 주입 공정들을 차례로 수행하여 상기 자기 터널 접합막 내에 격리 영역을 형성하는 것을 포함하되,
상기 격리 영역은 상기 마스크 패턴들 아래에 각각 배치된 자기 터널 접합 요소들을 정의하는 자기 기억 소자의 제조 방법. - 청구항 1에 있어서,
상기 복수의 이온 주입 공정들을 차례로 수행하는 것은,
제1 불순물들을 주입하는 제1 이온 주입 공정을 수행하는 것; 및
제2 불순물들을 주입하는 제2 이온 주입 공정을 수행하는 것을 포함하는 자기 기억 소자의 제조 방법. - 청구항 2에 있어서,
상기 제1 불순물들은 상기 제2 불순물들과 다른 자기 기억 소자의 제조 방법. - 청구항 2에 있어서,
상기 제1 이온 주입 공정에 의하여 상기 자기 터널 접합막 내에 비정질 영역이 형성되고,
상기 제2 이온 주입 공정은 상기 비정질 영역 내에 수행되는 자기 기억 소자의 제조 방법. - 청구항 2에 있어서,
적어도 상기 제1 이온 주입 공정을 수행하기 전에 상기 마스크 패턴들을 갖는 기판 상에 캡핑 절연막을 콘포말하게 형성하는 것을 더 포함하는 자기 기억 소자의 제조 방법. - 청구항 1에 있어서,
상기 자기 터널 접합막을 형성하기 전에 상기 기판 상에 하부 전극막을 형성하는 것을 더 포함하되,
상기 복수의 이온 주입 공정들 차례로 수행하는 것은, 상기 마스크 패턴들을 이온 주입 마스크로 사용하여, 상기 복수의 이온 주입 공정들을 차례로 수행하여 상기 자기 터널 접합막 및 상기 하부 전극막 내에 상기 격리 영역을 형성하는 것을 포함하고,
상기 격리 영역은 상기 자기 터널 접합 요소들 아래에 각각 배치된 하부 전극들을 더 정의하는 자기 기억 소자의 제조 방법. - 기판 상에 배치된 자기 터널 접합막;
상기 자기 터널 접합막 내에 형성되어, 서로 이격된 자기 터널 접합 요소들을 정의하는 격리 영역; 및
상기 자기 터널 접합 요소들 상에 각각 배치된 마스크 패턴들을 포함하되,
상기 격리 영역은 제1 불순물들, 상기 제1 불순물들과 다른 제2 불순물들, 및 상기 자기 터널 접합 요소 내 원소들 중에서 적어도 하나와 동일한 원소를 포함하는 자기 기억 소자. - 청구항 7에 있어서,
상기 제1 불순물들은 상기 격리 영역에 자기적 격리 특성을 제공하고,
상기 제2 불순물들은 상기 격리 영역에 전기적 격리 특성 및 자기적 격리 특성을 제공하는 자기 기억 소자. - 청구항 7에 있어서,
상기 자기 터널 접합 요소들 아래에 각각 배치된 하부 전극들을 더 포함하되,
상기 격리 영역은 아래로 연장되어 상기 하부 전극들 사이에도 배치되고,
상기 격리 영역의 적어도 아랫부분은 상기 하부 전극과 동일한 원소를 더 포함하는 자기 기억 소자. - 청구항 7에 있어서,
상기 마스크 패턴들은 상부 전극들을 각각 포함하고,
상기 상부 전극들은 상기 자기 터널 접합 요소들의 상부면들과 각각 접촉하는 자기 기억 소자.
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KR1020130108070A KR102152145B1 (ko) | 2013-09-09 | 2013-09-09 | 자기 기억 소자 및 그 제조 방법 |
US14/311,238 US9444033B2 (en) | 2013-09-09 | 2014-06-20 | Magnetic memory device and method of manufacturing the same |
US15/233,939 US20160351795A1 (en) | 2013-09-09 | 2016-08-10 | Magnetic memory device and method of manufacturing the same |
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Also Published As
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US9444033B2 (en) | 2016-09-13 |
KR102152145B1 (ko) | 2020-09-07 |
US20150069560A1 (en) | 2015-03-12 |
US20160351795A1 (en) | 2016-12-01 |
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