Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-41-C8-42
DOI: 10.1051/jphyscol:1988809
CORRELATION BETWEEN BANDSTRUCTURE AND MAGNETO-OPTICAL PROPERTIES OF BCC FexCo1-x
D. Weller1, W. Reim1, H. Ebert1, D. D. Johnson2 et F. J. Pinski31 Siemens AG, Research Laboratories, 8520 Erlangen, F.R.G.
2 Naval Research Lab., Washington, DC 20375, U.S.A.
3 Dept. of Physics, Univ. of Cincinatti, Ohio 45221, U.S.A.
Abstract
The electronic properties of polycrystalline FexCo1-x have been investigated experimentally using ultraviolet photoemission spectroscopy and magneto-optical spectroscopy. Results are discussed in terms of spin polarized band structure calculations (KKR-CPA) performed for a series of disordered bcc FexCo1-x alloys. A dominating peak in the UPS spectra centered between 1.35 eV and 1.1 eV binding energy for different compositions clearly correlates with a strong feature in the polar Kerr rotation with a maximum value of θK = 0.55° at hv = 1.5 eV. This feature is attributed to excitations of majority d-states.