Title :
Evidence for polarised boron in Co-B and Fe-B alloys
Author :
Xu, Y.B. ; Greig, D. ; Seddon, E.A. ; Cornelius, S. ; Matthew, J.A.D.
Author_Institution :
Dept. of Phys. & Astron., Leeds Univ., UK
fDate :
9/1/1999 12:00:00 AM
Abstract :
By exploiting the tunability of synchrotron radiation in measurements of spin-resolved photoemission it has proved possible to obtain information on the polarisation of the valence electrons of Co-B and Fe-B amorphous magnetic alloys. Both the spin-integrated and spin-resolved energy distribution curves show a marked dependence on photon energy indicating that the p states of boron hybridise with the d states of the transition metals giving rise to mixed states in the binding energy range 1 to 5 eV. The observed polarisation and spin-resolved densities of states imply that in the above restricted energy range there is a net negative polarisation of the boron states
Keywords :
X-ray photoelectron spectra; amorphous magnetic materials; binding energy; boron alloys; cobalt alloys; iron alloys; valence bands; 1 to 5 eV; Co-B; Co-B alloys; Fe-B; Fe-B alloys; d states; mixed states; net negative polarisation; photon energy; spin-integrated energy distribution curves; spin-resolved energy distribution curves; spin-resolved photoemission; synchrotron radiation; transition metals; tunability; valence electrons; Amorphous magnetic materials; Amorphous materials; Boron alloys; Cobalt alloys; Electrons; Iron alloys; Photoelectricity; Polarization; Saturation magnetization; Synchrotron radiation;
Journal_Title :
Magnetics, IEEE Transactions on
