講演情報
[11a-E214-10]Tuning magnetostriction via crystallization in nanogranular Fe-B-N alloy films
〇Naoki Isogai1, Kosuke Imamura1, Yuta Nakamura1,2, Masato Kotsugi2, Mitsuru Ohtake1 (1.Yokohama Nat. Univ., 2.Tokyo Univ. of Sci.)
キーワード：
Fe-B-N alloy、nanogranular structure、magnetostriction
Crystallization behavior is investigated as a key factor controlling the magnetostrictive properties of nanogranular Fe-B-N thin films. The microstructure varies depending on the annealing temperature. With increasing the annealing temperature, crystallization initially occures within the grains and parts of the grain boundaries, followed by grain growth and coalescence at higher temperatures. Consequently, the magnetostriction varies significantly from positive to negative values.