ホーム > 研究活動 > 口頭発表(2018) > Development of high performance permanent magnets without reliance on scarce elements

研究活動

Development of high performance permanent magnets without reliance on scarce elements

Future Perspectives on Novel Magnetic Materials

SepehriAmin Hossein(NIMS), TANGXin(NIMS), LIU Lihua(NIMS), TOZMAN KARANIKOLAS Pelin(NIMS), DIRBA Imants(NIMS), 大久保忠勝(NIMS), 宝野和博(NIMS)

Abstract

In order to realize a high coercivity permanent magnet, we have combined advanced multi-scale microstructure characterizations with magnetic domain observations and micromagnetic simulations to have a better understanding on microstructure-coercivity relationship. In this talk, we will first show how a high room temperature coercivity of 2.2 T with remanent magnetization of 1.30 T is achieved in Dy-free permanent magnets by control of grain size and shape, and engineering of the grain boundary phase. At the end of the talk, we will discuss the potential of SmFe12-based compound as future high performance permanent magnets.


研究活動

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