Abstract
The magnetic moment of titanium in $\mathrm{Sm}{({\mathrm{Fe}}_{0.8}{\mathrm{Co}}_{0.2})}_{11}\mathrm{Ti}$ was evaluated directly with x-ray magnetic circular dichroism, and magnitude of titanium's magnetic moment was identified with powder neutron Rietveld analysis. It was demonstrated experimentally that titanium in $\mathrm{Sm}{({\mathrm{Fe}}_{0.8}{\mathrm{Co}}_{0.2})}_{11}\mathrm{Ti}$ has a magnetic moment of about $1{\ensuremath{\mu}}_{\mathrm{B}}$, and that magnetic moment of titanium couples antiferromagnetically to those of the host elements (iron and cobalt) at room temperature. From first-principles calculation, the magnitude of titanium's magnetic moment could be explained by Friedel's concept of the virtual bound state and reverse spin extended to the neighboring iron sites.
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