Published June 10, 1982
| Version v1
Journal article
Temperature dependence of the spin waves in ErFe2
- 1. Risoe National Lab., Roskilde (Denmark)
- 2. National Bureau of Standards, Washington, DC (USA). National Measurement Lab.
- 3. National Bureau of Standards, Washington, DC (USA)
- 4. Naval Research Lab., Washington, DC (USA)
Description
The temperature renormalisation of the energies of the optic modes in ErFe2 has been determined from room temperature up to close to the Curie temperature (574 K). It is found that the two modes, a dispersive transition-metal mode and a localised crystal-field-dominated mode, cross over at about 420 K. The experimental results have been interpreted and are well accounted for by a linear spin wave model, where the level scheme of the lowest J multiplet of the Er3+ site has been assumed to consist of pure Jsub(z) states with an equidistant energy spacing between the levels. (author)
Additional details
Publishing Information
- Journal Title
- J. Phys., C (London). Solid State Phys.
- Journal Volume
- 15
- Journal Issue
- 16
- Series
- J. Phys., C (London). Solid State Phys.
- Journal Page Range
- 3587-3596
- ISSN
- 0022-3719
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 13704106
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CRYSTAL FIELD; CURIE POINT; DISPERSION RELATIONS; ENERGY LEVELS; ERBIUM ALLOYS; ERBIUM IONS; HIGH TEMPERATURE; INELASTIC SCATTERING; INTERMETALLIC COMPOUNDS; IRON ALLOYS; LAVES PHASES; MEDIUM TEMPERATURE; NEUTRONS; OPTICAL MODELS; RENORMALIZATION; SPIN WAVES; TEMPERATURE DEPENDENCE
- Descriptors DEC
- ALLOYS; ATOMIC IONS; BARYONS; CHARGED PARTICLES; ELEMENTARY PARTICLES; FERMIONS; HADRONS; IONS; MATHEMATICAL MODELS; NUCLEONS; PHYSICAL PROPERTIES; RARE EARTH ALLOYS; SCATTERING; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS; TRANSITION TEMPERATURE