Published 2002 | Version v1
Journal article Metadata-only

Magnetic order in CeI2

Creators

  • 1. Department for Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3000 Bern 9 (Switzerland)
  • 2. ETH, Zurich (Switzerland)
  • 3. Laboratory for Neutron Scattering, Paul Scherrer Institute, Villigen (Switzerland)

Description

CeI2 is a halide with metallic conductivity according to the formula (Ce3+)(I-)2(e-). Magnetic interactions are mediated by the conduction electrons and are significantly stronger than for insulating rare-earth halides. CeI2 crystallizes in the MoSi2 layer-type structure with space group I4/mmm and lattice parameters a=3.87212(5) A and c=13.8646(2) A at 15 K. At TN=10.0(2) K, a phase transition to a 3D antiferromagnetically ordered state occurs with an incommensurate k vector of (0, 0.2761(1), 1) at 1.5 K. The k vector is temperature-dependent and, as the sublattice magnetization, reaches saturation below 4 K. CeI2 has one magnetic sublattice with moments parallel to the a axis. The amplitude is sine-modulated along the b axis and amounts to 1.87(1) μB per Ce3+ ion. The crystal-field splitting reduces the ordered moment slightly below the 2F5/2 free-ion value of g.J=15/7 for Ce3+. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1007/s003390101124

Additional details

Identifiers

DOI
10.1007/s003390101124;

Publishing Information

Journal Title
Applied Physics. A, Materials Science and Processing
Journal Volume
74
Journal Issue
1,Suppl
Journal Page Range
p. s595-s597
ISSN
0947-8396
CODEN
APAMFC

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
34024296
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANTIFERROMAGNETISM; CERIUM IODIDES; CERIUM IONS; CRYSTAL FIELD; CRYSTAL LATTICES; EXPERIMENTAL DATA; LATTICE PARAMETERS; MAGNETIC DIPOLE MOMENTS; MAGNETIC FIELDS; NEEL TEMPERATURE; SPACE GROUPS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0013-0065 K
Descriptors DEC
CERIUM COMPOUNDS; CHARGED PARTICLES; CRYSTAL STRUCTURE; DATA; DIPOLE MOMENTS; HALIDES; HALOGEN COMPOUNDS; INFORMATION; IODIDES; IODINE COMPOUNDS; IONS; MAGNETIC MOMENTS; MAGNETISM; NUMERICAL DATA; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SYMMETRY GROUPS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION TEMPERATURE

Optional Information

Notes
With 5 figs., 2 tabs., 7 refs.