磁性材料  低希土類元素含有(Nd=2~7at.%)α‐Fe/Nd2Fe14Btypeバルク交換スプリング磁石の磁気特性

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タイトル別名
  • Magnetic Properties of Low Rare-earth Content (Nd=2-7 at. %) .ALPHA.-Fe/Nd2Fe14B type Bulk Exchange-Spring Magnets.
  • テイキドルイ ゲンソ ガンユウ Nd 2 7at アルファ Fe Nd2Fe14B type バルク コウカン スプリング ジシャク ノ ジキ トクセイ

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Magnetic properties and structures of low rare-earth content (Nd=2-7at.%) α-Fe/Nd2e14B type Nd-Fe-Co-V-B system bulk exchange-spring magnets prepared by the Spark Plasma Sintering (SPS) method were investigated. In this range of Nd content, the bulk magnets showed the same magnetic properties as those of the annealed ribbons used as the raw materials. The saturation magnetization and soft/hard phase ratio corresponded with the estimated values. However, the exchange coupling strength decreased conspicuously with a lower Nd content presumably as a result of an increase in the grain size.

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