Title

A Comparative Mössbauer Spectral Study of the Electronic and Magnetic Properties of Nd₆Fe₁₃Ag and Nd₆Fe ₁₃AgH ₁₃

Abstract

The Mössbauer spectra of Nd 6Fe 13Ag and Nd 6Fe 13AgH 13 have been measured between 85 and 295 K and analyzed with a model that takes into account the basal magnetic anisotropy, the iron and hydrogen near-neighbor environments of the five crystallographically and magnetically inequivalent 4d, 16k, 16k′, 16l 1, and 16l 2 iron sites in the former and the six crystallographically and magnetically inequivalent 4d, 16k, 16k′, 16l 1, 16l 2-1 and 16l 2-2 iron sites in the latter, where the additional site results from a predominance of hydrogen as near-neighbors on the iron 16l 2 site. The increases in hyperfine field and isomer shift observed upon hydrogenation are in agreement with the increase in Wigner-Seitz cell volumes of each site and the changes in the near-neighbor environments. © 2004 Elsevier B.V. All rights reserved.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Elsevier, All rights reserved.


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