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The hyperfine structure of161Dy in dysprosium salts

Authors
Journal
Journal of Physics and Chemistry of Solids
0022-3697
Publisher
Elsevier
Publication Date
Volume
28
Issue
10
Identifiers
DOI: 10.1016/0022-3697(67)90185-0

Abstract

Abstract The Mössbauer technique was used to investigate the low temperature (4.2°K) hyperfine structure of 161Dy in the following paramagnetic salts: Group 1; Dy-oxalate, Dy-acetate, DyF 3·5 H 2 O, Dy( NO 3) 3·6 H 2 O, DyPO 4·5 H 2 O, Dy( MoO 4) 3, DyFeO 3, DyMn 2 O 5, DyAlG; and Group 2; Dy 2 O 3, DyCl 3·6 H 2 O, Dy-ethyl sulfate. In all cases the observed spectra were consistent with a collinear hyperfine magnetic field and axially symmetric EFG. This requires a ground doublet with the property g ⊥ = 0 ≠ g ‖. In Group 1 compounds the observed hfs interactions were within 4 per cent of the free ion hyperfine interaction, g O β N H eff = 820 ± 20 Mc/ s for a doublet ‖ ± J z 〉 with J s = 15 2 . The three compounds in Group 2 had g O β N H eff = 727, 675 and 446 Mc/ s respectively. The results in Group 1 imply a ground doublet with g ‖ ≅ 19·6 and in Group 2 we have values for g ‖ of 17·2, 16·0 and 10·6 for the three compounds, respectively.

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