Magnetism, Electronic Structure and Lattice Sites of Fe Ions Implanted into Yttrium

Abstract

Using perturbed γ-ray distribution techniques and in-beam Mössbauer spectroscopy, the magnetism, electronic structure, and lattice sites of Fe ions implanted into Y have been investigated. About 65% of the Fe atoms occupy interstitial sites, which come out to be non-magnetic. The remaining fractions is found on substitutional sites, and exhibits a nearly Curie-type susceptibility and Korringa-type spin dynamics. Local spin density calculations predict the magnetic moment, the hyperfine field and the isomer shift in agreement with the experimental results.

Localized Magnetic Impurity States and Magnetic Moments in a Non-Magnetic host metal

“…Not only that, later experiments by Riegel and Gross [4] and Kapoor et.al. [5]brought out some more intriguing results. It was found that iron impurities in Group V metals V, Nb, and Ta showed zero magnetic moments, whereas in Group VI metals Cr, Mo and W, there existed nonzero localized magnetic moments.…”