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Microstructure and magnetic properties of anistropic polycrystalline Sm(Fe0.8Co0.2)12 thin films with ThMn12 structure

Intermag 2018 (Singapore)

2018年4月27日(金)

小川大介、高橋有紀子、廣澤哲、宝野和博

Abstract

The coercivity of the Sm(FeCo)12 films increased from 0.5 T to 0.8 T by depositing Cu andpost-annealing at 400 ℃. Then, we carried out the EDS analysis about the Cu diffusedSm(Fe0.8Co0.2)12 film with compared to the sample before diffusion process. In the samplebefore diffusion process, Sm, Fe, and Co elements are distributed uniformly. On the otherhand, in the sample after Cu diffusion, the distribution of the Sm element become non-uniform,following the distribution of Cu elements. Moreover, Cu seems to be diffused into not onlygrain boundary, but also Sm(Fe0.8Co0.2)12 grains partially, and the formation of other phaseswere suggested which should be influence on coercivity. Therefore, it is important to controlthe formation of these phases and proper grain boundary phase, for further improvement ofcoercivity.


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文部科学省

文部科学省
元素戦略プロジェクト(活動紹介)
NIMS磁石パートナーシップ

元素戦略拠点

触媒・電池元素戦略拠点
触媒・電池元素戦略研究拠点 (京都大学)
東工大元素戦略拠点
東工大元素戦略拠点 (東京工業大学)
構造材料元素戦略研究拠点
構造材料元素戦略研究拠点 (京都大学)
高効率モーター用磁性材料技術研究組合
高効率モーター用 磁性材料技術研究組合