ニッケル・鉄共析物の結晶構造, 配向および磁性

Abstract

Crystal structures, orientations and magnetic properties of Ni-Fe co-deposits obtained from sulfamic acid baths were studied by X-ray diffractiometry and hysteresis loop measurements. The following results were obtained: (1) The orientation was determined by the ratio of intensity of peak lines of X-ray in Ni-Fe co-deposit to that in the powdered sample. The strength of orientation was assumed to be the value calculated by the following equation: The strength of orientation=A/B where A=The ratio of the intensity of strongest peak of X-ray diffraction lines to the intensity of the second peak of those in the electrodeposited layer. B=The above ratio of X-ray diffraction lines of the same plane indices in the powdered sample. (2) In a body-centered cubic lattice, the strength of orientation in (110) increased with the increase of current density. The strength of orientation was less at pH=2.0 and greater at 50°C in both of body-centered and face-centered lattices. (3) In general, coercive force of the films increased, but saturation magnetization of the films decreased with the increase in nickel content of the films.