Q.R. Huang, Ho-Cheol Kim, et al.
Macromolecules
The electronic structure of amorphous Co1-xBx (x=0.17, 0.23, and 0.32) alloys were calculated to clarify their magnetism and electronic specific heat. The electronic structures were calculated self-consistently, both in the spin-polarized and paramagnetic states, by employing the most-localized linear muffin-tin orbital method together with the recursion method. B s and p states split into bonding and antibonding states, and B p states, in particular, hybridize with the tails of Co d states. The exchange splitting of Co d states decreases with increasing B content mainly because of the enhancement of the hybridization. As a result, amorphous Co-B alloys become less ferromagnetic as their B content increases. The calculated magnetic moments per Co atom are proportional to the exchange splitting of Co d states, and decrease with increasing B content. They can be satisfactorily explained by the generalized Stoner model, and agree quantitatively with the experimental data. The density of states at the Fermi level rises with increasing B content, because the highest peak of the minority Co d states shifts toward the Fermi level owing to the decrease in the exchange splitting. This explains a gradual increase in the electronic specific coefficient observed in the experiment. © 1993 The American Physical Society.
Q.R. Huang, Ho-Cheol Kim, et al.
Macromolecules
Elizabeth A. Sholler, Frederick M. Meyer, et al.
SPIE AeroSense 1997
J.H. Kaufman, Owen R. Melroy, et al.
Synthetic Metals
Thomas H. Baum, Carl E. Larson, et al.
Journal of Organometallic Chemistry