JP6400118B2 - メモリセル、半導体構造、半導体デバイスおよびその製造方法 - Google Patents
メモリセル、半導体構造、半導体デバイスおよびその製造方法 Download PDFInfo
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- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
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- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- SBEQWOXEGHQIMW-UHFFFAOYSA-N silicon Chemical compound [Si].[Si] SBEQWOXEGHQIMW-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
-
- 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
- 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
- H10N50/80—Constructional details
-
- 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
- H10N50/80—Constructional details
- H10N50/85—Magnetic active materials
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mram Or Spin Memory Techniques (AREA)
- Hall/Mr Elements (AREA)
- Semiconductor Memories (AREA)
Description
本出願は、2014年4月9日に出願された米国特許出願整理番号14/249,183“MEMORY CELLS,SEMICONDUCTOR STRUCTURES,SEMICONDUCTOR DEVICES,AND METHODS OF FABRICATION”の出願日の利益を享受する権利を主張する。
Claims (18)
- 少なくとも一つの拡散性の種と少なくとも一つの他の種とを含む前駆体磁性材料から形成された空乏磁性材料を含む磁性領域であって、前記空乏磁性材料は、前記少なくとも一つの他の種を含む、磁性領域と、
別の磁性領域と、
前記磁性領域と前記別の磁性領域との間の酸化物領域と、
前記磁性領域に隣接する非晶質領域であって、少なくとも一つのトラップ部位と、前記少なくとも一つの拡散性の種に対する前記少なくとも一つの他の種の化学親和力よりも高い、前記少なくとも一つの拡散性の種に対する化学親和力と、を有する少なくとも一つの誘引種を含む前駆体トラップ材料から形成され、前記前駆体磁性材料からの前記少なくとも一つの拡散性の種に結合される前記少なくとも一つの誘引種を含む、非晶質領域と、
を含む磁気セルコアを含み、
前記少なくとも一つの誘引種は、コバルト、鉄、タングステンを含み、前記非晶質領域は、約35原子百分率(35アトミック%)よりも多いタングステンを含む、
メモリセル。 - 前記磁性領域は、前記酸化物領域の結晶構造と実質的に整合する結晶構造を有する、
請求項1に記載のメモリセル。 - 前記メモリセルは、約1.00(100%)を超えるトンネル磁性抵抗を示す、
請求項1に記載のメモリセル。 - 前記非晶質領域によって前記磁性領域から離隔された第2の酸化物領域をさらに含む、
請求項1に記載のメモリセル。 - 前記前駆体磁性材料は、非晶質である、
請求項1に記載のメモリセル。 - 前記少なくとも一つの誘引種は、誘引種と別の誘引種とを含む、
請求項1に記載のメモリセル。 - 前記前駆体トラップ材料は、前記別の誘引種のサブ領域と交互の前記誘引種のサブ領域を含む、
請求項6に記載のメモリセル。 - 少なくとも一つの拡散性の種と少なくとも一つの他の種とを含む前駆体磁性材料から形成された空乏磁性材料を含む磁性領域であって、前記空乏磁性材料は前記少なくとも一つの他の種を含むと共に結晶化された磁性領域と、
結晶化された別の磁性領域と、
前記磁性領域と前記別の磁性領域との間の結晶化された酸化物領域と、
少なくとも一つの誘引種を含み、前記少なくとも一つの拡散性の種に対する前記少なくとも一つの誘引種の化学親和力が前記少なくとも一つの拡散性の種に対する前記少なくとも一つの他の種の化学親和力よりも高い前駆体トラップ材料から形成されたトラップ領域であって、前記少なくとも一つの誘引種が前記前駆体磁性材料からの前記少なくとも一つの拡散性の種に結合されると共に非晶質状態を維持されたまま前記磁性領域に隣接するトラップ領域と、
を含む磁気セルコアを含み、
前記前駆体トラップ材料は、前記少なくとも一つの誘引種としてルテニウムおよびタングステンを含む、
メモリセル。 - 前記前駆体磁性材料は、前記少なくとも一つの拡散性の種としてホウ素を含み、前記少なくとも一つの他の種としてコバルトおよび鉄を含む、
請求項8に記載のメモリセル。 - 磁気メモリセルを形成する方法であって、
基板の上にトラップ部位を含む前駆体トラップ材料を形成することと、前記前駆体トラップ材料に隣接する拡散性の種を含む前駆体磁性材料を形成することと、前記前駆体トラップ材料に前記前駆体磁性材料から前記拡散性の種を移動し、前記前駆体磁性材料のうちの少なくとも一部を空乏磁性材料に変換し、前記前駆体トラップ材料のうちの少なくとも一部を濃縮トラップ材料に変換することとを含む、前駆体構造を形成することと、
前記移動の後、前記前駆体構造から磁気セルコア構造を形成することと、
を含み、
前記基板の上にトラップ部位を含む前駆体トラップ材料を形成することは、前記基板の上に誘引種を形成することと、前記誘引種の結びつけられた結合を分解し、前記トラップ部位を形成するために、前記誘引種を衝突させることとを含み、
前記前駆体磁性材料から前記前駆体トラップ材料に前記拡散性の種を移動させることは、前記前駆体トラップ材料に前記拡散性の種を拡散させることと、前記トラップ部位で前記拡散性の種を反応させることとを含む、
方法。 - 磁気メモリセルを形成する方法であって、
基板の上にトラップ部位を含む前駆体トラップ材料を形成することと、前記前駆体トラップ材料に隣接する拡散性の種を含む前駆体磁性材料を形成することと、前記前駆体トラップ材料に前記前駆体磁性材料から前記拡散性の種を移動し、前記前駆体磁性材料のうちの少なくとも一部を空乏磁性材料に変換し、前記前駆体トラップ材料のうちの少なくとも一部を濃縮トラップ材料に変換することとを含む、前駆体構造を形成することと、
前記移動の後、前記前駆体構造から磁気セルコア構造を形成することと、
を含み、
前記基板の上にトラップ部位を含む前駆体トラップ材料を形成することは、少なくとも一つの他の誘引種のサブ領域と交互の誘引種のサブ領域を含む材料構造を形成することを含み、前記材料構造は、一つ以上の前記誘引種と前記少なくとも一つの他の誘引種との前記トラップ部位を含み、前記トラップ部位は、前記誘引種の前記サブ領域と、前記少なくとも一つの他の誘引種の前記サブ領域との間の界面に少なくとも沿って配置され、
前記前駆体磁性材料から前記前駆体トラップ材料に前記拡散性の種を移動させることは、前記誘引種と、前記少なくとも一つの他の誘引種とのうちの少なくとも一つの前記トラップ部位と前記拡散性の種を反応させることを含み、
前記材料構造の結びつけられた結合を分解し、さらなるトラップ部位を形成するために、前記材料構造を衝突させることをさらに含む、
方法。 - 前記移動させることの前に、
前記前駆体磁性材料の上に酸化物材料を形成することをさらに含む、
請求項10に記載の方法。 - 前記酸化物材料を形成した後、前記酸化物材料の上に別の磁性材料を形成することをさらに含む、
請求項12に記載の方法。 - 磁気メモリセルを形成する方法であって、
基板の上にトラップ部位を含む前駆体トラップ材料を形成することと、前記前駆体トラップ材料に隣接する拡散性の種を含む前駆体磁性材料を形成することと、前記前駆体トラップ材料に前記前駆体磁性材料から前記拡散性の種を移動し、前記前駆体磁性材料のうちの少なくとも一部を空乏磁性材料に変換し、前記前駆体トラップ材料のうちの少なくとも一部を濃縮トラップ材料に変換することとを含む、前駆体構造を形成することと、
前記移動の後、前記前駆体構造から磁気セルコア構造を形成することと、
を含み、
前記拡散性の種を移動させることは、500℃より高い温度で、前記前駆体磁性材料と前記前駆体トラップ材料とをアニールすることを含む、
方法。 - 前記前駆体磁性材料と前記前駆体トラップ材料とをアニールすることは、結晶質微細構造から非晶質微細構造へ、前記前駆体トラップ材料の微細構造を変換することを含む、
請求項14に記載の方法。 - 磁気メモリセルを形成する方法であって、
基板の上に非晶質の前駆体トラップ材料と拡散性の種を含む非晶質の前駆体磁性材料とを互いに隣接して形成することと、
アニールにより、前記前駆体トラップ材料に前記前駆体磁性材料から前記拡散性の種を移動させると共に、前記前駆体磁性材料のうちの少なくとも一部を結晶化された空乏磁性材料に変換し、前記前駆体トラップ材料のうちの少なくとも一部を非晶質状態に維持された濃縮トラップ材料に変換することと、
前記アニールの後、前記結晶化された空乏磁性材料および前記非晶質状態に維持された濃縮トラップ材料のそれぞれの一部を含む磁気セルコア構造を形成することと、
を含み、
前記前駆体トラップ材料は、タングステンおよびルテニウムを含み、
前記前駆体磁性材料は、前記拡散性の種としてホウ素を含み、他の種としてコバルトおよび鉄を含む、
方法。 - 前記前駆体トラップ材料を形成した後に前記前駆体磁性材料を形成する、請求項16に記載の方法。
- 前記前駆体磁性材料を形成した後に前記前駆体トラップ材料を形成する、請求項16に記載の方法。
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