Strain-magneto-optics of a magnetostrictive ferrimagnet CoFe2O4
Yu.P. Sukhorukov, A.V. Telegin, N.G. Bebenin, A.P. Nosov, V.D., Bessonov, and A.A. Buchkevich
TL;DR
This study demonstrates the correlation between magnetostriction and magnetoreflection in CoFe2O4, showing magnetic fields induce strain that alters the electron structure and optical properties of the ferrimagnetic crystal.
Contribution
It provides experimental evidence linking magnetostriction to optical reflection changes in a ferrimagnet, highlighting the indirect effect of magnetic fields on optical properties.
Findings
Magnetic field causes strain and deformation in CoFe2O4.
Strain affects electron energy structure and reflection spectrum.
Clear correlation between magnetostriction and magnetoreflection observed.
Abstract
We experimentally demonstrate that in magnetostrictive ferrimagnetic single crystal of CoFe2O4 there is clear correlation between magnetostriction and magnetoreflection of unpolarized light in the infrared range. The influence of magnetic field on specular reflection is likely to be indirect: application of a magnetic field results in strong strain and deformation of the crystal lattice, which leads to the change in electron energy structure and hence reflection spectrum.
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