Accession Number : ADA136843

Title :   Annealing Effects in Ferromagnetic Amorphous Alloys.

Descriptive Note : Annual rept. no. 3, 1 Aug 82-30 Oct 83,

Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s) : Graham,C D , Jr ; Egami,T

PDF Url : ADA136843

Report Date : 15 Dec 1983

Pagination or Media Count : 12

Abstract : The kinetics, and therefore probably the atomic mechanism, of the annealing of field-induced anisotropy, Curie temperature, and internal friction have been shown to be the same in certain ferromagnetic amorphous alloys. Disaccomodation can be almost eliminated, and permeability increased, by annealing a zero-magnetostriction amorphous alloy in a perpendicular field. Flash annealing of amorphous alloys permits new annealing treatments that are not otherwise possible. A model of magnetostriction in amorphous alloys relates to the magnitude and sign of the magnetostriction directly to the magnitude and sign of the screening in a screened point-charge model. In particular, the linear magnetostriction is zero if there is no screening. (Author)

Descriptors :   *Ferromagnetic materials, *Amorphous materials, *Alloys, *Annealing, Magnetostriction, Magnetic properties, Kinetics, Anisotropy, Permeability, Processing, Magnetic fields, Research management, Reports

Subject Categories : Metallurgy and Metallography
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE