Published June 13, 1997 | Version v1
Journal article Metadata-only

Crystal fields and exchange interactions in HoT4Al8 with T=Mn and Fe

Creators

  • 1. Technische Univ. Dresden (Germany). Inst. fuer Angewandte Physik und Didaktik der Physik
  • 2. Argonne National Laboratory, Argonne, IL 60439 (United States)
  • 3. Institut Laue Langevin, 156X, F-38042 Grenoble Cedex (France)

Description

We investigated the magnetic excitations in polycrystalline samples of hard magnet related compounds HoMn4Al8 and HoFe4Al8 by neutron spectroscopy. For both compounds the magnetic spectra at energies below 15 meV are dominated by the response of the Ho3+ ions. In HoMn4Al8 we observed pure crystal-field transitions within the Ho3+ J=8 ground multiplet which is split into 9 singlets and 4 doublets under the low point-group symmetry of 4/mmm. In HoFe4Al8 the Ho crystal-field-split states are perturbed by the molecular field of the ordered Fe sublattice. (orig.)

Additional details

Publishing Information

Journal Title
Physica. B, Condensed Matter
Journal Volume
234-236
Journal Page Range
p. 739-740.
ISSN
0921-4526
CODEN
PHYBE3

Conference

Title
1. European conference on neutron scattering (ECNS-1).
Dates
8-11 Oct 1996.
Place
Interlaken (Switzerland).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
29007748
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ALUMINIUM ALLOYS; ANISOTROPY; CRYSTAL FIELD; EXCHANGE INTERACTIONS; GROUND STATES; HOLMIUM ALLOYS; INTERMETALLIC COMPOUNDS; IRON ALLOYS; MANGANESE ALLOYS; MULTIPLETS; NEUTRON DIFFRACTION; PERMANENT MAGNETS; POLYCRYSTALS; SPACE GROUPS; TEMPERATURE RANGE 0013-0065 K; TERNARY ALLOY SYSTEMS; TIME-OF-FLIGHT SPECTROMETERS
Descriptors DEC
ALLOY SYSTEMS; ALLOYS; COHERENT SCATTERING; CRYSTALS; DIFFRACTION; ENERGY LEVELS; EQUIPMENT; INTERACTIONS; MAGNETS; MEASURING INSTRUMENTS; RARE EARTH ALLOYS; SCATTERING; SPECTROMETERS; SYMMETRY GROUPS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS