Accession Number : AD0285039

Title :   MINIATURE THIN-FILM INDUCTORS

Corporate Author : MOTOROLA INC PHOENIX ARIZ

Personal Author(s) : GLEASON,F.R.

Report Date : 01 OCT 1962

Pagination or Media Count : 1

Abstract : The problem of reducing air gap effects in the assembly of copper-conducting spirals with bulk ferrites is reviewed. Methods are discussed for overcoming this effect by providing recessed areas for accommodating the coils in the ferrite. Also reviewed are the problems encountered in the control of the ferrite-film deposition process to achieve more reproducible films. Methods for the measurement of the magnetic, compositional, and structural properties of the deposited films are discussed. The application of flat spiral coils of gold to the ferrite film, followed by a second deposition of ferrite films, is also discussed. The density of the ferrite films is shown to be comparable to that of a bulk ferrite sample of like composition. (Author)

Descriptors :   *COLD WAR, *MANUFACTURING, *MINIATURE ELECTRONIC EQUIPMENT, *RADIOFREQUENCY, COPPER, FERRITES, FERROMAGNETIC MATERIALS, GOLD, INDUCTANCE, MAGNETIC PROPERTIES, MEASUREMENT, PLATINUM, PROCESSING, PRODUCTION, THIN FILMS (STORAGE DEVICES)

Distribution Statement : APPROVED FOR PUBLIC RELEASE