Title :
Properties of SmCo Film for Magnetic Rotary Encoder
Author :
Okuno, H. ; Ishikawa, M. ; Sakaki, Y.
Author_Institution :
Chiba Univ.
Abstract :
RF magnetron sputtering was used to prepare SmCo films on drums for use in magnetic rotary encoders and the recording and playback characteristics were investigated. It was found that for a head-medium spacing of 15 ¿m, recording and playback with an S/N ratio of at least 30 dB was possible at bit lengths as short as 50 ¿m, corresponding to a maximum resolution of approximately 3150 PPR when adopted in ordinary 50 mm diameter encoders.
Keywords :
Magnetic devices; Magnetic films; Magnetic heads; Magnetic properties; Magnetic recording; Magnetization reversal; Permeability; Radio frequency; Sputtering; Thin film devices;
Journal_Title :
Magnetics in Japan, IEEE Translation Journal on
DOI :
10.1109/TJMJ.1987.4549720
