Magnetic properties of Co-Fe electrodeposited alumite films

Abstract

The magnetic properties of alumite film in which Co-Fe alloy is electrodeposited are investigated with regard to the alloy composition and the geometric structure of the magnetic films. The Co-Fe particles electro-deposited in the alumite film are single-phase alloy particles. The Co-Fe alloy electrodeposited films with small pore diameter (150 AA) have a large maximum magnetic energy product (BH/sub max/) of about 1.44 MGOe due to the high coercive force, high saturation magnetization, and good squareness of the M-H curve. The magnetic properties of the Co-Fe electrodeposited alumite film of the composition of 34 at.% Co were as follows: H/sub c/=2700 Oe and M/sub r//M/sub s/=0.90. It is concluded that the Co-Fe alloy electrodeposited film shows good potential for perpendicular magnetic recording media of magnetic rotary encoders.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>