CURIEhyphen;POINT WRITING OF MAGNETIC HOLOGRAMS ON MnBi

摘要

Reversible phase holograms have been made on thin films of MnBi by Curiehyphen;point writing. Magnetic holograms are formed when the interference pattern, created by conventional holographic techniques, heats the film above its Curie temperature, causing a magnetic domain pattern that corresponds to the interference pattern. The magnetic hologram can be nondestructively read out, without the use of polarizers or analyzers, by means of either the Faraday or Kerr magnetohyphen;optic effect. The hologram can be erased by application of a magnetic field.