FeB電析膜の軟磁気特性に及ぼす複合錯化剤の影響

抄録

To obtain amorphous FeB-plated films with soft magnetization, the effect of a combined complex agent of potassium sodium tartrate (KNaC₄H₄O₆ · 4H₂O) and ammonium sulfate ( (NH₄)₂SO₄) on the film properties was investigated. Soft magnetic films with coercivities of less than 4 Oe were obtained by using a bath composition of KNaC₄H₄O₆ · 4H₂O = 600mmol/L and (NH₄)₂SO₄ = 80mmol/L. These soft films also exhibited large magnetostriction of 26 × 10^-6, suggesting that the use of the combined complex agent is very effective for obtaining FeB amorphous films that have soft magnetic properties and large magnetostriction simultaneously. Change in composition of films along their thicknesses is considered to be responsible for the magnetic softening of FeB-plated films.