The hyperfine splitting of the ground state and first excited state of holmium in yttrium hydroxide

D. St Bunbury, C. Carboni, R. L. Cone, M. A H McCausland, S. Mroczkowski, J. W. Ross

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have studied the field dependence of the hyperfine splitting of 165Ho in yttrium hydroxide by spin echo NMR at liquid helium temperatures and in fields up to 8 T. Hyperfine spectra have been obtained from the electronic ground state and from the first excited state. The measured hyperfine splittings are compared with theoretical results obtained by diagonalizing the complete electronic-nuclear Hamiltonian for the nominally 5I8 ground multiplet of Ho3+, using crystal field parameters derived from optical spectroscopy. There is close agreement between the measured and calculated quadrupolar and octupolar splittings, but we find a significant difference between the measured and calculated dipolar splittings, especially when allowance is made for J mixing. Agreement is restored, to within the uncertainties, if the currently accepted value of the dipolar hyperfine coupling coefficient for the free Ho3+ ion is reduced by 1.3%. Independent evidence for a reduction of that order will be presented in a later publication. The ratio of nuclear to electronic antishielding factors for Ho3+ is found to be gamma N/ gamma E=148+or-10, in close agreement with the value obtained in pure holmium hydroxide.

Original languageEnglish
Article number015
Pages (from-to)6125-6136
Number of pages12
JournalJournal of Physics: Condensed Matter
Volume7
Issue number30
DOIs
Publication statusPublished - 1995

Fingerprint

Holmium
Yttrium
Hamiltonians
holmium
yttrium
Excited states
Ground state
hydroxides
Helium
Nuclear magnetic resonance
Crystals
ground state
Ions
Liquids
excitation
electronics
Temperature
allowances
coupling coefficients
liquid helium

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

The hyperfine splitting of the ground state and first excited state of holmium in yttrium hydroxide. / St Bunbury, D.; Carboni, C.; Cone, R. L.; McCausland, M. A H; Mroczkowski, S.; Ross, J. W.

In: Journal of Physics: Condensed Matter, Vol. 7, No. 30, 015, 1995, p. 6125-6136.

Research output: Contribution to journalArticle

St Bunbury, D. ; Carboni, C. ; Cone, R. L. ; McCausland, M. A H ; Mroczkowski, S. ; Ross, J. W. / The hyperfine splitting of the ground state and first excited state of holmium in yttrium hydroxide. In: Journal of Physics: Condensed Matter. 1995 ; Vol. 7, No. 30. pp. 6125-6136.
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AU - Carboni, C.

AU - Cone, R. L.

AU - McCausland, M. A H

AU - Mroczkowski, S.

AU - Ross, J. W.

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