The magnetostriction of ferromagnetic crystals below saturation

Abstract

The calculations of the magnetostriction of ferromagnetic crystals below saturation by Akulov and Heisenberg have been extended to cover the case of an iron-like single crystal in th e form of an oblate spheroid for which the equatorial plane is a (001) crystallographic plane, with the magnetic field applied in any direction in the equatorial plane. The magnetostriction curves calculated on the basis of Law ton & Stewart’s theory of magnetization curves are compared with measurement of Honda & Masiyama and the present authors. Agreement with the latter is good and such discrepancies as exist can be accounted for satisfactorily.