超音波励起フェライトメッキ法によるNiZnフェライト膜の作製

概要

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Polycrystalline films of spinel Fe_<3-x-y>Ni_xZn_Yo_4 (x=0-0.39, y=0-0.3) were ferrite-plated from an aqueous solution(T=75℃, pH=6.8)of FeCl_2+NiCl_2+ZnCl_2 to which an oxidizing solution of NaNO_2 had been added.Low frequency (19.5 kHz, 600 W) ultrasound weves and highfrequency (1.6MHz, 20W)ultrasound waves were applied during plating.When the aqueous solutions were supplied intermittently, Fe_3O_4(x=y=0)films with a smooth surface were obtained only when low-and high-frequency ultrasound waves were applied simultaneously. On the other hand, supplying the aqueous solutions continuously facilitated formation of Fe_3O_4 films with a smooth surface during low-frequency sonication.The simultaneous sonication increased the solubility limit of Ni ions in Fe_<3-x-y>Ni_xZn_yO_4 films to x=0.42 from the previous limit of x=0.35 without sonication, though at a low deposition rate(4nm/min).
社団法人日本磁気学会の論文
1998-04-15