Mossbauer effect studies of Nd/sub 2/Fe/sub 14-chi/Si/sub chi/B and Y/sub 2/Fe/sub 14-chi/Si/sub chi/B

Conference · Fri Sep 01 04:00:00 EDT 1989 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA)

OSTI ID:5180556

Pringle, O A; Long, G J; Marasinghe, G K; James, W J ^[1]; Pedziwiatr, A T; Wallace, W E ^[2]; Grandjean, F ^[3]

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1. Missouri Univ., Rolla, MO (USA). Dept. of Physics
2. Magnetics Technology Center, Carnegie-Mellon Univ., Pittsburgh, PA (US)
3. Institut de Physique, Univ. de Liege, B-4000, Sart Tilman (BE)

The Mossbauer effect spectra of the solid solutions of Nd/sub 2/Fe/sub 14-chi/Si/sub chi/B with chi equal to 0.00. 0.25, 0.50. 0.75, 1.0, 1.5, and 2.0, and Y/sub 2/Fe/sub 14-chi/Si/sub chi/B with chi equal to 0.0, 1.0, 1.5, and 2.0 have been measured at 295 K. The results are most consistent with a random distribution of the silicon over the smaller 16k/sub 1/, 16k/sub 2/, 8j/sub 1/, 4c, and 4e iron sites in Nd/sub 2/Fe/sub 14/B. Apparently the silicon is, at least in part, excluded from the 8j/sub 2/ site, the site with the largest Wigner-Seitz volume. The results do not, however, rule out other possible silicon site occupancy models. The isomer shift increases slightly with increasing silicon content,whereas the quadrupole interaction remains virtually constant. The hyperfine fields decrease with increasing silicon content, but the apparent linewidth increases. These changes are modeled in terms of a distribution of hyperfine fields on each site. The results are discussed.

• OSTI ID: 5180556
• Report Number(s): CONF-890309--
• Conference Information: Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Magnetics; (USA) Journal Volume: 25:5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
BORON ALLOYS
DISPERSIONS
ENERGY SPECTRA
INTERACTIONS
IRON ALLOYS
MIXTURES
MOESSBAUER EFFECT
MULTIPOLES
NEODYMIUM ALLOYS
QUADRUPOLES
RARE EARTH ALLOYS
SILICON ALLOYS
SOLID SOLUTIONS
SOLUTIONS
SPECTRA
YTTRIUM ALLOYS