JP2020527865A - 高温熱処理に適した磁気トンネル接合 - Google Patents
高温熱処理に適した磁気トンネル接合 Download PDFInfo
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 88
- 238000010438 heat treatment Methods 0.000 title description 11
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- 238000003860 storage Methods 0.000 claims abstract description 29
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- 229910019236 CoFeB Inorganic materials 0.000 claims description 38
- 239000001301 oxygen Substances 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 13
- 229910052796 boron Inorganic materials 0.000 claims description 13
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 6
- 229910001120 nichrome Inorganic materials 0.000 claims description 6
- 239000002902 ferrimagnetic material Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000000696 magnetic material Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 229910001092 metal group alloy Inorganic materials 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 238000000151 deposition Methods 0.000 description 7
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- 229910003321 CoFe Inorganic materials 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910002441 CoNi Inorganic materials 0.000 description 4
- 229910018936 CoPd Inorganic materials 0.000 description 4
- 229910018979 CoPt Inorganic materials 0.000 description 4
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 description 4
- 229910004166 TaN Inorganic materials 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- GNRSAWUEBMWBQH-UHFFFAOYSA-N nickel(II) oxide Inorganic materials [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
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- 229910052715 tantalum Inorganic materials 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- WYEMLYFITZORAB-UHFFFAOYSA-N boscalid Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1NC(=O)C1=CC=CN=C1Cl WYEMLYFITZORAB-UHFFFAOYSA-N 0.000 description 2
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- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- -1 oxygen ions Chemical class 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 238000004151 rapid thermal annealing Methods 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Abstract
Description
[Co(x)/Pt(y)]m
ここで、xは約0Å〜約10Åの間の、好ましくは約0.5Å〜約7Åの間のCoの厚みを有し、yは約0Å〜約10Åの間の、好ましくは約0.5Å〜約8Åの間のPtの厚みを有し、mは約3〜約10の間の整数で、mは膜スタック内で繰り返し形成されるCo/Pt含有層215aの数を表す。例えば、xが5Å、yが3Åで、mが整数2のとき、これはCo層(5Å)/Pt層(3Å)/Co層(5Å)/Pt層(3Å)となるCo/Pt層を表わす。
[Co(x1)/Ni(y1)]n
ここで、x1は約0Å〜約10Åの間の、好ましくは約0.5Å〜約7Åの間のCoの厚みを有し、y1は約0Å〜約10Åの間の、好ましくは約0.5Å〜約8Åの間のNiの厚みを有し、nは約1〜約10の間の整数で、nは膜スタック内で繰り返し形成されるCo/Pt含有層215aの数を表す。
[Co(x2)/Pt(y2)]p
ここで、x2は約0Å〜約10Åの間の、好ましくは約0.5Å〜約7Åの間のCoの厚みを有し、y2は約0Å〜約10Åの間の、好ましくは約0.5Å〜約8Åの間のPtの厚みを有し、pは約0〜約5の間の整数で、pは膜スタック内で繰り返し形成されるCo/Pt含有層225aの数を表す。
Claims (15)
- 基板上に磁気トンネル接合(MTJ)構造を形成するために利用される膜スタックであって、
バッファ層と、
前記バッファ層の上に配置されたシード層と、
前記シード層の上に配置された第1のピンニング層と、
前記第1のピンニング層の上に配置された合成フェリ磁性体(SyF)結合層と、
前記SyF結合層の上に配置された第2のピンニング層と、
前記第2のピンニング層の上に配置された構造ブロック層と、
前記構造ブロック層の上に配置された磁気基準層と、
前記磁気基準層の上に配置されたトンネルバリア層と、
前記トンネルバリア層の上に配置された磁気ストレージ層と、
前記磁気ストレージ層の上に配置された、一又は複数の層を含むキャッピング層と、
前記キャッピング層の上に配置されたハードマスクと、
を含み、
前記キャッピング層、前記バッファ層、及び前記SyF結合層のうちの少なくとも1つはRuから作られていない、膜スタック。 - 前記キャッピング層は、Ir含有層、Ru含有層、またはこれらの組み合わせのうちの一又は複数を含む、請求項1に記載の膜スタック。
- 前記キャッピング層は酸素含有層をさらに含む、請求項2に記載の膜スタック。
- 前記キャッピング層はCoFeB含有層をさらに含む、請求項3に記載の膜スタック。
- 前記キャッピング層はTa含有層をさらに含む、請求項3に記載の膜スタック。
- 前記キャッピング層は、
最上層としての、Ir含有層、Ru含有層、又はこれらの組み合わせと、
酸素含有層とを含み、
前記最上層は前記酸素含有層の直上に配置される、請求項3に記載の膜スタック。 - 前記キャッピング層は、
最上層としてのIr含有層と、
W含有層、酸素含有層、前記酸素含有層の直上に配置された第2のIr含有層、CoFeB含有層、Ta含有層、及びMo含有層のうちの一又は複数とを含む、請求項1に記載の膜スタック。 - 前記SyF結合層はIr含有層を含む、請求項1に記載の膜スタック。
- 前記バッファ層はCoFeB含有層を含む、請求項1に記載の膜スタック。
- 前記バッファ層のホウ素の重量%は、約20重量%〜40重量%の間になる、請求項9に記載の膜スタック。
- 前記シード層は、(a)NiCr含有層、又は(b)Pt含有層、Ir含有層、及びRu含有層のうちの一又は複数を含む、請求項1に記載の膜スタック。
- 前記シード層はNiCr含有層を含み、
前記バッファ層は、TaN含有層とTa含有層のうちの一又は複数をさらに含み、前記バッファ層の前記CoFeB含有層は、前記バッファ層のTaN含有層及び前記バッファ層のTa含有層の一又は複数の上に配置される、請求項9に記載の膜スタック。 - 前記シード層は、Pt含有層、Ir含有層、及びRu含有層のうちの一又は複数を含み、
前記バッファ層はTaN含有層とTa含有層のうちの一又は複数をさらに含み、前記バッファ層の前記CoFeB含有層は、前記バッファ層の前記TaN含有層と前記バッファ層の前記Ta含有層のうちの一又は複数の下に配置される、請求項9に記載の膜スタック。 - 基板上に磁気トンネル接合(MTJ)構造を形成するために利用される膜スタックであって、
CoFeB含有層を含むバッファ層と、
前記バッファ層の上に配置されたシード層と、
前記シード層の上に配置された第1のピンニング層と、
前記第1のピンニング層の上に配置された、Ir含有層を含む合成フェリ磁性体(SyF)結合層と、
前記SyF結合層の上に配置された第2のピンニング層と、
前記第2のピンニング層の上に配置された構造ブロック層と、
前記構造ブロック層の上に配置された磁気基準層と、
前記磁気基準層の上に配置されたトンネルバリア層と、
前記トンネルバリア層の上に配置された磁気ストレージ層と、
前記磁気ストレージ層の上に配置された、一又は複数の層を含むキャッピング層と、
前記キャッピング層の上に配置されたハードマスクと、
を含み、
前記キャッピング層、前記バッファ層、及び前記SyF結合層のうちの少なくとも1つはRuから作られていない、膜スタック。 - 前記キャッピング層は、最上層としてIr含有層を含む、請求項14に記載の膜スタック。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201762535792P | 2017-07-21 | 2017-07-21 | |
US62/535,792 | 2017-07-21 | ||
US15/862,301 US10255935B2 (en) | 2017-07-21 | 2018-01-04 | Magnetic tunnel junctions suitable for high temperature thermal processing |
US15/862,301 | 2018-01-04 | ||
PCT/US2018/033262 WO2019018051A1 (en) | 2017-07-21 | 2018-05-17 | MAGNETIC TUNNEL JUNCTIONS SUITABLE FOR HEAT TREATMENT AT HIGH TEMPERATURE |
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CN (2) | CN110692144B (ja) |
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TW202306207A (zh) | 2023-02-01 |
US11251364B2 (en) | 2022-02-15 |
EP3656003A1 (en) | 2020-05-27 |
TW202410499A (zh) | 2024-03-01 |
US20190172485A1 (en) | 2019-06-06 |
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WO2019018051A1 (en) | 2019-01-24 |
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