Electronic structure, photoemission, and magnetism in Gd2Co and Er2Co glasses

S. S. Jaswal, D. J. Sellmyer, M. Engelhardt, Z. Zhao, A. J. Arko, K. Xie

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Abstract

The electronic and magnetic structures of amorphous Gd2Co and Er2Co are studied by ultraviolet and x-ray photoemission measurements and band calculations. The spectra for both glasses show a band of Co 3d levels centered at a binding energy EB of about -1.0 eV and peaks arising from 4f levels at EB=-8.4 eV and EBapeq2-5 9 eV for Gd and Er, respectively. Magnetization data have shown that a-Gd2Co possesses a ferrimagnetic structure with a small Co moment. The linear-muffin-tin-orbital method is used to perform self-consistent, spin-polarized calculations in the semirelativistic approximation for Gd2Co. Because of the complexity of the glassy structure, the calculations are performed for body-centered-tetragonal and cubic fluorite structures, and the sensitivity to local environment effects studied. The calculations are in a good overall agreement with the photoemission and magnetic-moment results.

Original languageEnglish (US)
Pages (from-to)996-1001
Number of pages6
JournalPhysical Review B
Volume35
Issue number3
DOIs
StatePublished - Jan 1 1987

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ASJC Scopus subject areas

  • Condensed Matter Physics

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