Spin waves in the cubic ferrimagnet Ho/sub 0/. /sub 88/Tb/sub 0/. /sub 12/Fe/sub 2/. [Magnon dispersion relation]
Journal Article
·
· Phys. Rev. Lett.; (United States)
Using neutron spectrometey, we have investigated the magnon dispersion relation for the ferrimagnetic cubic Laves compound Ho/sub 0/./sub 88/Tb/sub 0/./sub 12/ Fe/sub 2/ at room temperature and 12 K. The results are described surprisingly well by a very simple near-neighbor exchange model which includes only iron--iron and iron--rare-earth interactions, crystal field anisotropy, and temperature renormalization that is derived from the sublattice magnetization. (AIP)
- Research Organization:
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
- NSA Number:
- NSA-33-30242; ERA-01-013654; EDB-76-036492
- OSTI ID:
- 7366443
- Journal Information:
- Phys. Rev. Lett.; (United States), Vol. 36:10
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HOLMIUM ALLOYS
SPIN WAVES
IRON BASE ALLOYS
TERBIUM ALLOYS
CRYSTAL FIELD
DISPERSION RELATIONS
EXCHANGE INTERACTIONS
FERRIMAGNETIC MATERIALS
FERRIMAGNETISM
LAVES PHASES
MAGNETIZATION
MAGNONS
MEDIUM TEMPERATURE
NEUTRON SPECTROSCOPY
ULTRALOW TEMPERATURE
ALLOYS
INTERACTIONS
IRON ALLOYS
MAGNETIC MATERIALS
MAGNETISM
QUASI PARTICLES
RARE EARTH ALLOYS
SPECTROSCOPY
360104* - Metals & Alloys- Physical Properties
HOLMIUM ALLOYS
SPIN WAVES
IRON BASE ALLOYS
TERBIUM ALLOYS
CRYSTAL FIELD
DISPERSION RELATIONS
EXCHANGE INTERACTIONS
FERRIMAGNETIC MATERIALS
FERRIMAGNETISM
LAVES PHASES
MAGNETIZATION
MAGNONS
MEDIUM TEMPERATURE
NEUTRON SPECTROSCOPY
ULTRALOW TEMPERATURE
ALLOYS
INTERACTIONS
IRON ALLOYS
MAGNETIC MATERIALS
MAGNETISM
QUASI PARTICLES
RARE EARTH ALLOYS
SPECTROSCOPY
360104* - Metals & Alloys- Physical Properties