JP6733700B2 - FeNi規則合金を含む磁性材料およびその製造方法 - Google Patents
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- H01F1/068—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder having a L10 crystallographic structure, e.g. [Co,Fe][Pt,Pd] (nano)particles
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Description
第1実施形態について説明する。本実施形態にかかるL10型のFeNi規則合金、すなわちFeNi超格子を含む磁性材料は、磁石材料や磁気記録材料等に適用されるものである。
第2実施形態について説明する。本実施形態では、第1実施形態と異なる製造方法により、軽元素がドープされたL10型のFeNi規則合金を含む磁性材料を製造する。
本発明は上記した実施形態に限定されるものではなく、特許請求の範囲に記載した範囲内において適宜変更が可能である。
また、表面層1bの厚みについても3μmである必要はなく、それ以下であってもそれ以上であっても良い。少なくとも表面層1bにおいて、ドープ相が構成されていれば上記実施形態で示したように高い飽和磁化と高い保磁力を確保することができ、粒状粒子1の断面の全域においてドープ相とされていても良い。
1a 中心部
1b 表面層
Claims (11)
- L10型の規則構造を有し、軽元素がドープされていると共に、粒状粒子(1)にて構成されるFeNi規則合金を含み、
前記軽元素がドープされた粒状粒子は、
前記FeNi規則合金を構成する粒状粒子の断面の全域において、前記軽元素が取り込まれたドープ相となっているものと、
前記FeNi規則合金を構成する粒状粒子の中心部(1a)は前記軽元素がドープされていないFeNi規則合金で構成される主相となっており、前記中心部を囲む表面層(1b)は前記軽元素が取り込まれたドープ相となっているものと、
前記FeNi規則合金を構成する粒状粒子の中心部(1a)は前記軽元素が取り込まれたドープ相となっており、前記中心部を囲む表面層(1b)は前記軽元素がドープされていないFeNi規則合金で構成される主相となっているものと、
の少なくとも1つによって構成されているFeNi規則合金を含む磁性材料。 - 前記軽元素として、B、C、Nのいずれか1つもしくは複数が前記FeNi規則合金にドープされている請求項1に記載のFeNi規則合金を含む磁性材料。
- L1 0 型の規則構造を有し、軽元素がドープされていると共に、粒状粒子(1)にて構成されるFeNi規則合金を含み、
前記軽元素として、B、Cのいずれか1つもしくはB、C、Nのいずれか複数が前記FeNi規則合金にドープされているFeNi規則合金を含む磁性材料。 - 前記FeNi規則合金は、面心立方格子の[001]面の積層構造であり、Niが主に存在しているNi層におけるNi原子の間の中心位置、および、Feが主に存在しているFe層におけるFe原子の間の中心位置の少なくとも一方に、前記軽元素が取り込まれている請求項1ないし3のいずれか1つに記載のFeNi規則合金を含む磁性材料。
- 前記軽元素としてNが取り込まれたL10型のFe2Ni2Nが含まれている請求項4に記載のFeNi規則合金を含む磁性材料。
- 前記L10型のFe2Ni2Nは、格子構造を構成する各軸の長さとなるNi原子間の距離a、b、cについて、2つの軸では距離a、bは、a=bであり、a/c=1.005以上であるような正方晶の構造である請求項5に記載のFeNi規則合金を含む磁性材料。
- L1 0 型の規則構造を有し、軽元素がドープされていると共に、粒状粒子(1)にて構成されるFeNi規則合金を含み、
前記FeNi規則合金は、面心立方格子の[001]面の積層構造であり、Niが主に存在しているNi層におけるNi原子の間の中心位置、および、Feが主に存在しているFe層におけるFe原子の間の中心位置の少なくとも一方に、前記軽元素が取り込まれ、
前記軽元素としてNが取り込まれたL1 0 型のFe 2 Ni 2 Nが含まれており、
前記L1 0 型のFe 2 Ni 2 Nは、格子構造を構成する各軸の長さとなるNi原子間の距離a、b、cについて、2つの軸では距離a、bは、a=bであり、a/c=1.005以上であるような正方晶の構造であるFeNi規則合金を含む磁性材料 - 前記L10型のFe2Ni2Nは、格子構造を構成する各軸の長さとなるNi原子間の距離a、b、cについて、2つの軸では距離a、bは、a=b=0.377nmであり、1つの軸では距離cは、c=0.374nmである請求項6または7に記載のFeNi規則合金を含む磁性材料。
- L10型の規則構造を有するFeNi規則合金を含む磁性材料の製造方法であって、
粒状粒子で構成されるFeNi規則合金を用意することと、
前記FeNi規則合金を用意した後に、前記FeNi規則合金に対して、軽元素をドープすることと、を含んでいるFeNi規則合金を含む磁性材料の製造方法。 - L1 0 型の規則構造を有するFeNi規則合金を含む磁性材料の製造方法であって、
粒状粒子で構成されるFeNi規則合金を用意することと、
前記FeNi規則合金に対して、軽元素をドープすることと、を含んでいるFeNi規則合金を含み、
前記軽元素をドープすることでは、前記軽元素としてB、C、Nのいずれか1つもしくは複数を含むドープ源を用いて電気化学処理を行うことで、前記軽元素のドープを行う、FeNi規則合金を含む磁性材料の製造方法。 - 前記軽元素をドープすることでは、ガス窒化処理を行うことにより、前記軽元素としてNのドープを行う請求項9または10に記載のFeNi規則合金を含む磁性材料の製造方法。
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CN201880031877.3A CN110651337B (zh) | 2017-05-17 | 2018-05-17 | 包含FeNi有序合金的磁性材料及其制造方法 |
PCT/JP2018/019169 WO2018212299A1 (ja) | 2017-05-17 | 2018-05-17 | FeNi規則合金を含む磁性材料およびその製造方法 |
DE112018002560.8T DE112018002560T5 (de) | 2017-05-17 | 2018-05-17 | Magnetisches Material, das eine geordnete Fe-Ni-Legierung aufweist, und Verfahren zum Herstellen desselben |
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