JP5537501B2 - 半導体記憶装置およびその製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims description 109
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- 238000000034 method Methods 0.000 claims description 25
- 230000005415 magnetization Effects 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 8
- 238000005530 etching Methods 0.000 claims description 8
- 238000010884 ion-beam technique Methods 0.000 claims description 5
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- 239000012528 membrane Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 74
- 101100124530 Mus musculus Mr1 gene Proteins 0.000 description 29
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- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000005291 magnetic effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B61/00—Magnetic memory devices, e.g. magnetoresistive RAM [MRAM] devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/0203—Particular design considerations for integrated circuits
- H01L27/0207—Geometrical layout of the components, e.g. computer aided design; custom LSI, semi-custom LSI, standard cell technique
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/20—Resistors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/01—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/10—Magnetoresistive devices
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- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Mram Or Spin Memory Techniques (AREA)
- Hall/Mr Elements (AREA)
Description
100a メモリセルアレイ領域
100b 抵抗素子領域
100c 論理回路領域
Claims (10)
- スピントランスファートルクによって反転する磁化方向に応じて抵抗値が変化可能な複数の記憶用MTJ素子が、半導体基板上に配置されたメモリセルアレイ領域と、
スピントランスファートルクによって反転する磁化方向に応じて抵抗値が変化可能な複数の抵抗用MTJ素子が、前記半導体基板上に第1の方向および前記第1の方向に垂直な第2の方向に沿って配置された抵抗素子領域と、を備え、
前記半導体基板の上面に平行な前記抵抗用MTJ素子の第1の断面の面積は、前記半導体基板の前記上面に平行な前記記憶用MTJ素子の第2の断面の面積よりも、大きい
ことを特徴とする半導体記憶装置。 - 前記複数の抵抗用MTJ素子のうち前記第1の方向で隣接する第1および第2の抵抗用MTJ素子は、電気的に直列に接続されている
ことを特徴とする請求項1に記載の半導体記憶装置。 - 前記第1および第2の抵抗用MTJ素子は、下部電極、前記下部電極に電気的に接続されたビット線コンタクト配線、または、前記ビット線コンタクト配線に電気的に接続され半導体基板に形成されたアクティブエリア、の何れかを介して、電気的に直列に接続されている
ことを特徴とする請求項2に記載の半導体記憶装置。 - 前記第2の抵抗用MTJ素子と、前記第2の抵抗用MTJ素子に前記第1または第2の方向で隣接する第3の抵抗用MTJ素子とは、上部電極により電気的に接続されている
ことを特徴とする請求項2又は3に記載の半導体記憶装置。 - 前記第1の抵抗用MTJ素子と前記第2の抵抗用MTJ素子との間の第1の距離は、複数の記憶用MTJ素子のうち隣接する2つの記憶用MTJ素子間の基準距離よりも、短い
ことを特徴とする請求項2ないし4のいずれか一項に記載の半導体記憶装置。 - 前記第1の距離は、前記第2の抵抗用MTJ素子と前記第3の抵抗用MTJ素子との間の第2の距離よりも短い
ことを特徴とする請求項5に記載の半導体記憶装置。 - 前記複数の抵抗用MTJ素子のうち前記第1の方向で隣接する第1および第2の抵抗用MTJ素子は、電気的に並列に接続されている
ことを特徴とする請求項1に記載の半導体記憶装置。 - 前記第1の抵抗用MTJ素子と前記第2の抵抗用MTJ素子とは、前記半導体基板に形成されたアクティブエリア、前記アクティブエリア上に形成されたビット線コンタクト配線、または、前記ビット線コンタクト配線に接続された下部電極の何れかを介して、電気的に接続されている
ことを特徴とする請求項7に記載の半導体記憶装置。 - 前記第1の抵抗用MTJ素子と前記第2の抵抗用MTJ素子とは、上部電極により電気的に接続されている
ことを特徴とする請求項7又は8に記載の半導体記憶装置。 - 抵抗素子領域において、半導体基板上に第1の方向および前記第1の方向に垂直な第2の方向に沿って配置され、スピントランスファートルクによって反転する磁化方向に応じて抵抗値が変化可能な複数の抵抗用MTJ素子を形成する半導体記憶装置の製造方法であって、
前記半導体基板上に、下部電極となる第1の導電体層、MTJ素子となる第1の強磁性層、バリア層、および第2の強磁性層、導電性を有する金属ハードマスク層の順に成膜し、
前記抵抗用MTJ素子を形成する領域上に選択的に形成されたマスク膜をマスクとして、前記金属ハードマスク層を選択的にエッチングし、
エッチングされた前記金属ハードマスク層をマスクとして、イオンビームの入射角が前記半導体基板の上面の垂線に対して傾いたIBE法により、前記第2の強磁性層、前記バリア層、前記第1の強磁性層をエッチングして抵抗用MTJ素子を形成し且つ前記第1の導電体層を選択的にエッチングして下部電極を形成し、
前記半導体基板上に、エッチングされた前記第1の導電体層、前記第1の強磁性層、前記バリア層、および前記第2の強磁性層を埋め込み且つ少なくとも前記金属ハードマスク層の上部が露出するように、埋め込み絶縁膜を形成し、
露出した前記金属ハードマスク層の上部と電気的に接続される上部電極を形成すること、を備え、
前記複数の抵抗用MTJ素子のうち前記第1の方向に隣接する第1および第2の抵抗用MTJ素子間の第1の距離は、メモリセルアレイ領域に配置され、スピントランスファートルクによって反転する磁化方向に応じて抵抗値が変化可能な複数の記憶用MTJ素子のうち隣接する2つの記憶用MTJ素子間の基準距離よりも、短い
ことを特徴とする半導体記憶装置の製造方法。
Priority Applications (4)
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JP2011129213A JP5537501B2 (ja) | 2011-06-09 | 2011-06-09 | 半導体記憶装置およびその製造方法 |
PCT/JP2012/055167 WO2012169241A1 (ja) | 2011-06-09 | 2012-03-01 | 半導体記憶装置およびその製造方法 |
US14/124,647 US9276039B2 (en) | 2011-06-09 | 2012-03-01 | Semiconductor storage device and method of manufacturing the same |
TW101108927A TWI469322B (zh) | 2011-06-09 | 2012-03-15 | Semiconductor memory device and manufacturing method thereof |
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JP2011129213A JP5537501B2 (ja) | 2011-06-09 | 2011-06-09 | 半導体記憶装置およびその製造方法 |
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JP2012256739A JP2012256739A (ja) | 2012-12-27 |
JP5537501B2 true JP5537501B2 (ja) | 2014-07-02 |
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Country Status (4)
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US (1) | US9276039B2 (ja) |
JP (1) | JP5537501B2 (ja) |
TW (1) | TWI469322B (ja) |
WO (1) | WO2012169241A1 (ja) |
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KR102107557B1 (ko) * | 2013-03-15 | 2020-05-07 | 인텔 코포레이션 | 임베딩된 자기 터널 접합들을 포함하는 로직 칩 |
US20160027843A1 (en) * | 2014-07-25 | 2016-01-28 | Yoshinori Kumura | Semiconductor memory device and manufacturing method thereof |
US9362336B2 (en) | 2014-09-11 | 2016-06-07 | Qualcomm Incorporated | Sub-lithographic patterning of magnetic tunneling junction devices |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US5695864A (en) * | 1995-09-28 | 1997-12-09 | International Business Machines Corporation | Electronic device using magnetic components |
US6611405B1 (en) | 1999-09-16 | 2003-08-26 | Kabushiki Kaisha Toshiba | Magnetoresistive element and magnetic memory device |
JP3892736B2 (ja) * | 2001-03-29 | 2007-03-14 | 株式会社東芝 | 半導体記憶装置 |
JP3918612B2 (ja) * | 2002-04-03 | 2007-05-23 | ヤマハ株式会社 | 磁気トンネル接合素子の製法と磁気トンネル接合装置 |
JP2003303942A (ja) | 2002-04-12 | 2003-10-24 | Mitsubishi Electric Corp | 半導体記憶装置 |
JP4247085B2 (ja) | 2003-09-29 | 2009-04-02 | 株式会社東芝 | 磁気記憶装置およびその製造方法 |
JP2005303156A (ja) | 2004-04-15 | 2005-10-27 | Sony Corp | 磁気メモリ装置 |
JP4920881B2 (ja) * | 2004-09-27 | 2012-04-18 | 株式会社日立製作所 | 低消費電力磁気メモリ及び磁化情報書き込み装置 |
KR100604913B1 (ko) * | 2004-10-28 | 2006-07-28 | 삼성전자주식회사 | 멀티 비트 셀 어레이 구조를 가지는 마그네틱 램 |
JP2012129470A (ja) * | 2010-12-17 | 2012-07-05 | Toshiba Corp | 半導体記憶装置 |
US9466363B2 (en) * | 2012-01-01 | 2016-10-11 | Tohoku University | Integrated circuit |
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2011
- 2011-06-09 JP JP2011129213A patent/JP5537501B2/ja not_active Expired - Fee Related
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2012
- 2012-03-01 US US14/124,647 patent/US9276039B2/en active Active
- 2012-03-01 WO PCT/JP2012/055167 patent/WO2012169241A1/ja active Application Filing
- 2012-03-15 TW TW101108927A patent/TWI469322B/zh active
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Publication number | Publication date |
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JP2012256739A (ja) | 2012-12-27 |
TWI469322B (zh) | 2015-01-11 |
TW201250989A (en) | 2012-12-16 |
US9276039B2 (en) | 2016-03-01 |
US20140124883A1 (en) | 2014-05-08 |
WO2012169241A1 (ja) | 2012-12-13 |
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