JP5720681B2 - 薄膜磁気デバイス及びその製造方法 - Google Patents
薄膜磁気デバイス及びその製造方法 Download PDFInfo
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- JP5720681B2 JP5720681B2 JP2012517278A JP2012517278A JP5720681B2 JP 5720681 B2 JP5720681 B2 JP 5720681B2 JP 2012517278 A JP2012517278 A JP 2012517278A JP 2012517278 A JP2012517278 A JP 2012517278A JP 5720681 B2 JP5720681 B2 JP 5720681B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—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
- 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
- H01F41/30—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]
- H01F41/302—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
- H01F41/308—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 lift-off processes, e.g. ion milling, for trimming or patterning
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- 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
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- 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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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/70—Resistive array aspects
- G11C2213/74—Array wherein each memory cell has more than one access device
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/70—Resistive array aspects
- G11C2213/79—Array wherein the access device being a transistor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3254—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the spacer being semiconducting or insulating, e.g. for spin tunnel junction [STJ]
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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
- H10B61/20—Magnetic memory devices, e.g. magnetoresistive RAM [MRAM] devices comprising components having three or more electrodes, e.g. transistors
- H10B61/22—Magnetic memory devices, e.g. magnetoresistive RAM [MRAM] devices comprising components having three or more electrodes, e.g. transistors of the field-effect transistor [FET] type
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- Crystallography & Structural Chemistry (AREA)
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- Spectroscopy & Molecular Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
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- Mram Or Spin Memory Techniques (AREA)
Description
ケース(1)そもそも薄膜磁気デバイスの微細パターン形成が困難になる場合。
ケース(2)薄膜磁気デバイスの微細パターンは形成されるものの、製造中の材料の変質により磁性材料層の磁気特性が劣化してしまい、薄膜磁気デバイスとして用いることが困難になる場合。
以下に、種々のキャップ構造とエッチング方法の組み合わせにおいて生じるこれら2つのケースの検討結果を、代表的な薄膜磁気デバイスの一種である磁気抵抗効果素子を用いて説明する。
Claims (5)
- 基板の上方に磁性層、アルコールプラズマでエッチング可能なアルコールエッチ可能層、前記磁性層を劣化させる因子が当該磁性層へ拡散するのを抑制する因子バリア層、及び上部層をこの順に積層する工程と、
前記上部層を、ハロゲン系ガス又は酸素ガスの少なくとも一方を含むエッチングガスで所定の形状にエッチングする工程と、
前記因子バリア層を、前記磁性層を化学的に変質させないエッチングガスで所定の形状にエッチングする工程と、
前記アルコールエッチ可能層及び前記磁性層をアルコールを含むエッチングガスで所定の形状にエッチングする工程と
を具備し、
前記因子バリア層のエッチングガスは、He、Ne、Ar、Kr、Xe、N、H、及びCのうちの少なくとも一種を含み、O、F、Cl、及びBrを含まないガスである
薄膜磁気デバイスの製造方法。 - 請求項1記載の薄膜磁気デバイスの製造方法において、
前記上部層は、
前記因子バリア層上に設けられた下側膜と、
前記下側膜上に設けられた上側膜と
を備え、
前記上部層をエッチングする工程は、
前記上側膜を、前記下側膜をストッパ膜として、ハロゲン系ガス又は酸素ガスの少なくとも一方を含むエッチングガスで所定の形状にエッチングする工程と、
前記下側膜を、前記磁性層を化学的に変質させないエッチングガスで所定の形状にエッチングする工程と
を備える
薄膜磁気デバイスの製造方法。 - 請求項1記載の薄膜磁気デバイスの製造方法において、
前記磁性層は、Ni、Fe、及びCoのうちの少なくとも一種を含み、
前記因子バリア層は、Nb、Ta、Ti、Ga、Zr、Hf、Be、Al、Cr、W、Y、U、Mg、Ba、Sr、Ca、La、Sc、及びSiのうちの少なくとも一種の元素を含有する単体金属又は合金の材料を含む
薄膜磁気デバイスの製造方法。 - 請求項3に記載の薄膜磁気デバイスの製造方法において、
前記磁性層は、Ni、Fe、及びCoのうちの少なくとも一種を含み、
前記アルコールエッチ可能層は、Pa、Ag、Tc、Po、Yb、Tb、Pr、Dy、Ce、Er、Ho、Th、Tmのうちの少なくとも一種の元素を含有する単体金属又は合金の材料を含む
薄膜磁気デバイスの製造方法。 - 請求項1に記載の薄膜磁気デバイスの製造方法において、
前記磁性層は、Ni、Fe、及びCoのうちの少なくとも一種を含み、
前記アルコールエッチ可能層は、Rh、Au、Ir、Pt、Ru、Os、Re、Pdの中の少なくとも一種の元素を含有する単体金属又は合金の材料を含み、膜厚5nm以下である
薄膜磁気デバイスの製造方法。
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JP2012517278A JP5720681B2 (ja) | 2010-05-28 | 2011-05-24 | 薄膜磁気デバイス及びその製造方法 |
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Cited By (1)
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US10998493B2 (en) | 2018-09-28 | 2021-05-04 | Tdk Corporation | Spin-orbit-torque magnetoresistance effect element and magnetic memory |
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KR101574155B1 (ko) * | 2011-06-24 | 2015-12-03 | 캐논 아네르바 가부시키가이샤 | 자기 저항 효과 소자의 제조 방법 |
JP5836163B2 (ja) * | 2012-03-08 | 2015-12-24 | ルネサスエレクトロニクス株式会社 | 磁気メモリセル、磁気メモリセルの製造方法 |
JP6134611B2 (ja) * | 2013-08-29 | 2017-05-24 | 株式会社アルバック | 磁気抵抗素子の製造方法 |
CN110098320B (zh) * | 2018-01-30 | 2023-04-28 | 上海磁宇信息科技有限公司 | 一种刻蚀磁性隧道结导电硬掩模的方法 |
Citations (4)
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JP2006190780A (ja) * | 2005-01-05 | 2006-07-20 | Tdk Corp | 磁気抵抗効果素子及び薄膜磁気ヘッドの製造方法 |
JP2007049118A (ja) * | 2005-07-13 | 2007-02-22 | Tdk Corp | 磁界検出素子、基体、ウエハ、ヘッドジンバルアセンブリ、ハードディスク装置、および磁界検出素子の製造方法 |
JP2008135432A (ja) * | 2006-11-27 | 2008-06-12 | Tdk Corp | トンネル磁気抵抗効果素子及びその製造方法 |
JP2009071321A (ja) * | 2008-11-13 | 2009-04-02 | Canon Anelva Corp | 磁気抵抗効果素子の製造方法 |
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JP2006190780A (ja) * | 2005-01-05 | 2006-07-20 | Tdk Corp | 磁気抵抗効果素子及び薄膜磁気ヘッドの製造方法 |
JP2007049118A (ja) * | 2005-07-13 | 2007-02-22 | Tdk Corp | 磁界検出素子、基体、ウエハ、ヘッドジンバルアセンブリ、ハードディスク装置、および磁界検出素子の製造方法 |
JP2008135432A (ja) * | 2006-11-27 | 2008-06-12 | Tdk Corp | トンネル磁気抵抗効果素子及びその製造方法 |
JP2009071321A (ja) * | 2008-11-13 | 2009-04-02 | Canon Anelva Corp | 磁気抵抗効果素子の製造方法 |
Cited By (1)
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US10998493B2 (en) | 2018-09-28 | 2021-05-04 | Tdk Corporation | Spin-orbit-torque magnetoresistance effect element and magnetic memory |
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WO2011148944A1 (ja) | 2011-12-01 |
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