JP2015002352A5 - - Google Patents

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JP2015002352A5
JP2015002352A5 JP2014124426A JP2014124426A JP2015002352A5 JP 2015002352 A5 JP2015002352 A5 JP 2015002352A5 JP 2014124426 A JP2014124426 A JP 2014124426A JP 2014124426 A JP2014124426 A JP 2014124426A JP 2015002352 A5 JP2015002352 A5 JP 2015002352A5
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Claims (15)

  1. 基板、
    基板の上に形成された金属下層、および
    金属下層の上のシード層であって、第1金属と第2金属との交代層を含むシード層、を含み、
    第1金属と第2金属のそれぞれは、金属下層とは異なる金属から形成される磁気素子。
  2. 第1金属と第2金属との交代層は、2≦n≦20でn回繰り返される請求項1に記載の磁気素子。
  3. 交代層のそれぞれの層は、約0.3nmより小さい膜厚を有する請求項1に記載の磁気素子。
  4. 交代層は、超格子構造を形成する請求項1に記載の磁気素子。
  5. 交代層は、交互の、第1金属と第2金属のモノレイヤを含む請求項1に記載の磁気素子。
  6. 第1金属と第2金属のモノレイヤは、NiとCrのモノレイヤである請求項5に記載の磁気素子。
  7. 金属下層は、Hf、TaおよびTiからなるグループから選択された金属を含む請求項1に記載の磁気素子。
  8. 更に、シード層の上の参照層、参照層の上のトンネルバリア層、およびトンネルバリア層の上の貯蔵層、を含む請求項1に記載の磁気素子。
  9. 更に、シード層の交代層の上に形成された参照層を含み、シード層は参照層と界面を形成し、界面は、参照層と交互の構造を有さないシード層との間に形成された界面とは異なるテクスチュアを有し、
    シード層は、交互の構造を有さないシード層と比較して、参照層より強い垂直磁気異方性を形成する請求項1に記載の磁気素子。
  10. 参照層は、シード層の上の交互の金属層の多層スタックと、多層スタックの上の偏光層とを含む請求項8に記載の磁気素子。
  11. 参照層の交互の金属層の多層スタックは、CoおよびNiの交互の層を含む請求項10に記載の磁気素子。
  12. 参照層は、更に、多層スタックと偏光層との間に挿入層を含む請求項8に記載の磁気素子。
  13. 挿入層は、Ta、TaN、Ti、Hf、およびFeTaからなるグループから選択される材料を含む請求項12に記載の磁気素子。
  14. 基板の上の金属下層と、
    金属下層の上のシード層であって、第1金属と第2金属の交代層を含むシード層と、
    垂直配向を有する磁気トンネル接合(MTJ)素子であって、シード層の上に形成された参照層、参照層の上に形成されたトンネルバリア層、トンネルバリア層の上に形成された貯蔵層、上部電極および底部電極、を含む磁気トンネル接合(MTJ)素子と、
    を含む垂直磁気配向を有するスピントランスファートルク磁気ランダムアクセスメモリ素子。
  15. 基板はSi系基板であり、金属下層はHf、Ta、またはTiを含み、シード層はNiおよびCrの交互のモノレイヤ、またはNiおよびCoの交代層の多層スタックを含み、挿入層はTa、TaN、Ti、HfおよびFeTaからなるグループから選択された材料を含み、偏光層はCoFeBを含み、トンネルバリア層はMgOを含み、貯蔵層はCoFeBを含む請求項14に記載のスピントランスファートルク磁気ランダムアクセスメモリ素子。
JP2014124426A 2013-06-17 2014-06-17 磁気メモリ素子 Active JP6251130B2 (ja)

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EP13172259 2013-06-17
EP13172259.7 2013-06-17

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JP2015002352A5 true JP2015002352A5 (ja) 2017-07-27
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