Accession Number : AD0775718

Title :   Exploratory Development of Magnetic Bubble Domain Material for Application in Air Force Solid State Mass Memory Systems.

Descriptive Note : Interim rept. 1 May-31 Oct 73,

Corporate Author : ROCKWELL INTERNATIONAL CORP ANAHEIM CALIF ELECTRONICS RESEARCH DIV

Personal Author(s) : Heinz,D. M. ; Henry,R. D. ; Stearns,F. S.

Report Date : FEB 1974

Pagination or Media Count : 32

Abstract : In gallium-substituted iron garnets such as are used in bubble domain memories, the measured exchange constant values are lower than the normally used exchange constant values estimated from Neel molecular field theory. The measured values bring calculated wall energies into agreement with measured wall energies. From LPE (liquid phase epitaxy) film growth studies, the growth temperature has been found to be more influential than the growth rate on the amount of lead incorporated into a film from the flux. A new garnet material containing no magnetic rare earths has been prepared which has an appreciable uniaxial anisotropy. (Author)

Descriptors :   *Memory devices, *Magnetic materials, Gallium compounds, Iron compounds, Garnet, Magnetic domains, Epitaxial growth, Magnetic resonance

Subject Categories : Computer Hardware
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE