MAGNETIC LINEAR DICHROISM EFFECTS IN REFLECTION SPECTROSCOPY : A CASE STUDY AT THE FE M2,3 EDGE

Magneto-optical measurements are strongly dependent on the polarization of the radiation as well as the interaction geometry of the light with respect to the relative orientation and direction of the magnetization M. We performed magnetic circular dichroism (MCD) and magnetic linear dichroism (MLD) measurements around the Fe M2,3 transition by measuring the difference between the reflected intensities of right and left circular polarized light (MCD) and the difference between the reflected intensities for opposite magnetization directions (MLD). From the angular variations of the MCD measurements we extracted the dielectric tensor e(ω) which was then used as an input parameter to calculate the magneto-optical response of Fe in reflection MLD spectra. The experimental data around the M2,3 edge show good agreement with model calculations.

[1]  H. Höchst,et al.  Performance evaluation of a soft x‐ray quadruple reflection circular polarizer , 1995 .

[2]  Tobin,et al.  Linear and circular dichroism in angle resolved Fe 3p photoemission. , 1994, Physical review letters.

[3]  Hartmut Höchst,et al.  Multiple-reflection λ4 phase shifter: A viable alternative to generate circular-polarized synchrotron radiation , 1994 .

[4]  Martienssen,et al.  Advanced chaos forecasting. , 1994, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[5]  Rose,et al.  Linear magnetic dichroism in angular resolved Fe 3p core level photoemission. , 1993, Physical review letters.

[6]  Thole,et al.  Spin polarization and magnetic dichroism in photoemission from core and valence states in localized magnetic systems. , 1991, Physical review. B, Condensed matter.

[7]  Kimura,et al.  Strong magnetic circular dichroism at the M2,3 edges in ferromagnetic Ni and ferrimagnetic Fe3O4. , 1991, Physical review. B, Condensed matter.

[8]  J. Carroll,et al.  Optical constants of (001) niobium in the visible region , 1982 .

[9]  E. Stern,et al.  Calculation of the M 23 magneto-optical absorption spectrum of ferromagnetic nickel , 1975 .

[10]  J. Robertson,et al.  Magneto-optic spectra and the dielectric tensor elements of bismuth-substituted iron garnets at photon energies between 2.2-5.2 eV , 1975 .

[11]  D. Lacklison,et al.  Absorption spectra of Y 3 Fe 5 O 12 (YIG) and Y 3 Ga 5 O 12 : Fe 3+ , 1974 .

[12]  G. Laan.  Angular-resolved linear and circular dichroism in core-level photoemission of metallic systems. , 1995 .