Polar magneto-optical Kerr effect for low-symmetric ferromagnets

Details Polar magneto-optical Kerr effect for low-symmetric ferromagnets Polar magneto-optical Kerr effect for low-symmetric ferromagnets

2005-05-25

arxiv.org/abs/cond-mat/0505614v1

Physics

Condensed Matter

Other Condensed Matter

14 pages, 7 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.72.014451

The polar magneto-optical Kerr effect (MOKE) for low-symmetric ferromagnetic crystals is investigated theoretically based on first-principle calculations of optical conductivities and a transfer matrix approach for the electrodynamics part of the problem. Exact average magneto-optical properties of polycrystals are described, taking into account realistic models for the distribution of domain orientations. It is shown that for low-symmetric ferromagnetic single crystals the MOKE is determined by an interplay of crystallographic birefringence and magnetic effects. Calculations for single and bi-crystal of hcp 11-20 Co and for a polycrystal of CrO_2 are performed, with results being in good agreement with experimental data.

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