Accession Number : AD0764549

Title :   Phase Detection of Magneto-Optic Magnetization Signals.

Descriptive Note : Technical rept.,

Corporate Author : POMONA COLL CLAREMONT CALIF DEPT OF PHYSICS

Personal Author(s) : Fowler,Charles A. , Jr

Report Date : 20 JUL 1973

Pagination or Media Count : 17

Abstract : A method for recording the reversal of magnetization in ferromagnetic specimens by detecting the accompanying phase change of the magneto-optic light component (Kerr or Faraday) is described. The method uses polarized coherent illumination and involves the interference of the reflected (or transmitted) wave and a reference wave. For evaporated magnetic films that are transparently thin, a Twyman-Green interferometer arrangement is described. For thicker magnetic film specimens a technique involving holographic interferometry is employed. The magneto-optic signals accompanying magnetization reversal are observed with the conventional Kerr technique. (Author)

Descriptors :   (*MAGNETIC ALLOYS, *MAGNETOOPTICS), FILMS, PHASE MEASUREMENT, POLARIZATION, NICKEL ALLOYS, IRON ALLOYS, TEST METHODS, STEREOPHOTOGRAPHY, GAS LASERS, INTERFEROMETERS, THIN FILM STORAGE DEVICES

Subject Categories : Optics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE