DUST CORE
To provide a high-density dust core containing magnetic nanoparticles.SOLUTION: A dust core contains magnetic nanoparticles having an average particle size of 1-300 nm, and an unsaturated fatty acid. In the dust core, the unsaturated fatty acid preferably has two or more double bonds in one molecule...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a high-density dust core containing magnetic nanoparticles.SOLUTION: A dust core contains magnetic nanoparticles having an average particle size of 1-300 nm, and an unsaturated fatty acid. In the dust core, the unsaturated fatty acid preferably has two or more double bonds in one molecule, the carbon number of the unsaturated fatty acid is preferably 12-30, and the content of the unsaturated fatty acid is preferably 0.01-5 mass% with respect to the total amount of the magnetic nanoparticles and the unsaturated fatty acid.SELECTED DRAWING: Figure 1
【課題】磁性ナノ粒子を含有する高密度の圧粉磁心を提供する。【解決手段】圧粉磁心は、平均粒径が１〜３００ｎｍの磁性ナノ粒子と、不飽和脂肪酸とを含有する。圧粉磁心において、不飽和脂肪酸としては、１分子中に２個以上の二重結合を有するものが好ましく、また、不飽和脂肪酸の炭素数としては、１２〜３０が好ましく、さらに、不飽和脂肪酸の含有量としては、磁性ナノ粒子と不飽和脂肪酸との合計量に対して、０．０１〜５質量％が好ましい。【選択図】図１ |
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