Accession Number : AD0653601

Title :   RESEARCH ON STRIPE DOMAIN STRUCTURES IN FERROMAGNETIC METAL FILMS.

Descriptive Note : Final rept., 15 Dec 65-15 Dec 66,

Corporate Author : FRANKLIN INST RESEARCH LABS PHILADELPHIA PA

Personal Author(s) : Blades,J. D. ; Drew,J. B.

Report Date : 14 JAN 1967

Pagination or Media Count : 49

Abstract : An experimental and theoretical investigation of ferromagnetic thin films, demonstrating anaomalous stripe domains, has been conducted. The origin of the stripe domains is attributed to the existance of a uniaxial anisotropy perpendicular to the plane of the film which developes from a planar stress system and a vapor beam angle of incidence pile-up structure both relatable to fabrication procedures. The strip domain configuration is a planar 180 degree alternating direction of magnetization pattern with 180 degree Bloch transition walls. It is shown that the existence of a spin-wave type stripe domain system requires (1) a perpendicular anisotropy larger than the planar shape anisotropy or (2) an effective planar demagnetizing field through small sample size in addition to a perpendicular anistropy less than the planar shape anisotropy. (Author)

Descriptors :   (*FERROMAGNETIC MATERIALS, *FILMS), (*FERROMAGNETISM, ANISOTROPY), MAGNETIC FIELDS, STRESSES, MANUFACTURING, SPINNING(MOTION), TORQUE, HYSTERESIS

Subject Categories : Miscellaneous Materials
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE