Field dependence of the hyperfine splitting of holmium in holmium hydroxide

D. St P Bunbury, C. Carboni, M. A H McCausland

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The hyperfine splitting of 165Ho in holmium hydroxide has been studied by spin-echo NMR at liquid-helium temperatures in fields up to 8 T. The behaviour of the dipolar splitting in fields below 0.5 T confirms that the hyperfine parameters are not thermally averaged and that the NMR signals arise solely from ions in the electronic ground state. The field dependence of the hyperfine splitting is not accurately described by crystal-field parameters derived from magnetic susceptibility measurements on Ho(OH)3, but is in close agreement with calculations based on parameters derived from optical spectroscopy of Ho3+ in Y(OH)3. The following quantities are derived from the measurements: spontaneous magnetisation and longitudinal susceptibility of Ho(OH)3 at T=0:M0=(1.181+or-0.001) MA m-1 and chi /sub ///=0.0146+or-0.0005; ratio of nuclear to electronic anti-shielding factors for Ho3+ in the hydroxide: gamma N/ gamma E=149+or-15.

Original languageEnglish
Article number014
Pages (from-to)1309-1327
Number of pages19
JournalJournal of Physics: Condensed Matter
Volume1
Issue number7
DOIs
Publication statusPublished - 1989

Fingerprint

Holmium
holmium
hydroxides
Nuclear magnetic resonance
Helium
Magnetic susceptibility
Shielding
Ground state
magnetic permeability
Magnetization
nuclear magnetic resonance
Ions
electronics
liquid helium
Crystals
crystal field theory
shielding
echoes
Liquids
magnetization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Field dependence of the hyperfine splitting of holmium in holmium hydroxide. / Bunbury, D. St P; Carboni, C.; McCausland, M. A H.

In: Journal of Physics: Condensed Matter, Vol. 1, No. 7, 014, 1989, p. 1309-1327.

Research output: Contribution to journalArticle

Bunbury, D. St P ; Carboni, C. ; McCausland, M. A H. / Field dependence of the hyperfine splitting of holmium in holmium hydroxide. In: Journal of Physics: Condensed Matter. 1989 ; Vol. 1, No. 7. pp. 1309-1327.
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AB - The hyperfine splitting of 165Ho in holmium hydroxide has been studied by spin-echo NMR at liquid-helium temperatures in fields up to 8 T. The behaviour of the dipolar splitting in fields below 0.5 T confirms that the hyperfine parameters are not thermally averaged and that the NMR signals arise solely from ions in the electronic ground state. The field dependence of the hyperfine splitting is not accurately described by crystal-field parameters derived from magnetic susceptibility measurements on Ho(OH)3, but is in close agreement with calculations based on parameters derived from optical spectroscopy of Ho3+ in Y(OH)3. The following quantities are derived from the measurements: spontaneous magnetisation and longitudinal susceptibility of Ho(OH)3 at T=0:M0=(1.181+or-0.001) MA m-1 and chi /sub ///=0.0146+or-0.0005; ratio of nuclear to electronic anti-shielding factors for Ho3+ in the hydroxide: gamma N/ gamma E=149+or-15.

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