Magnetostriction and magnetic anisotropy of Fe35Co 65
by Ren, Tong, M.S., UNIVERSITY OF MARYLAND, COLLEGE PARK, 2011, 71 pages; 1501244

Abstract:

A Fe35Co65 single crystal has been prepared by a long time anneal at temperature close to its fcc-bcc phase boundary. Its magnetostriction constant λ100 and magnetocrystalline anisotropy constant K1 was measured using a strain gauge rosette and magnetization and torque magnetometer curves. The magnetostriction constant λ 100 is as high as 200 ppm. The value of the anisotropy constant K 1 and the value of the susceptibility were small and influenced by the magnetoelastic energy. The symmetry of the torque curves changes from 2-fold to 4-fold with increasing external field which indicates the existence of a second uniaxial phase. This result can be interpreted by the alignment of the magnetization of an epitaxial fcc precipitate in the bcc host by external field.
 
AdviserManfred Wuttig
SchoolUNIVERSITY OF MARYLAND, COLLEGE PARK
SourceMAI/ 50-02, p. , Dec 2011
Source TypeThesis
SubjectsMaterials Science
Publication Number1501244
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