Electric field gradients probed by μ+SR in Sc and α-ScHx solid solutions
- 1. ETH Zuerich, Institute for Particle Physics (Switzerland)
- 2. Institut Laue Langevin (France)
- 3. Paul Scherrer Institut (PSI) (Switzerland)
- 4. National Institute of Standards and Technology, Materials Science and Engineering Laboratory (United States)
Description
In Sc and α-ScHx below 40 K two μ+ states are formed: a tunnelling state extending over two adjacent tetrahedral (T) interstices sharing one face in the ab-plane of the hcp host lattice and a static μ+-Sc-H configuration analog to the T-pair state formed by two H atoms across a Sc site along the crystalline c-axis. This explains perfectly the high transverse-field (TF) μSR measurements at low temperature and allows a qualitative understanding of the temperature dependence.The modelling of the low TF measurements requires in addition the consideration of the electric field gradient (EFG) components acting on the Sc nuclei near the μ+, i.e., of the radial EFG due to the μ+ and of the axially symmetric crystal field. The magnetic field dependence of the anisotropic μ+SR relaxation rate is strongly influenced by the H-concentration in the solid solution system
Additional details
Identifiers
Publishing Information
- Journal Title
- Hyperfine Interactions
- Journal Volume
- 106
- Journal Issue
- 1-4
- Journal Page Range
- p. 91-95
- ISSN
- 0304-3843
- CODEN
- HYINDN
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40035904
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANISOTROPY; ATOMS; AXIAL SYMMETRY; CRYSTAL FIELD; ELECTRIC FIELDS; HCP LATTICES; MAGNETIC FIELDS; MUON SPIN RELAXATION; MUONS PLUS; POTASSIUM 40; SOLID SOLUTIONS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; TUNNEL EFFECT
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DISPERSIONS; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; FERMIONS; HEXAGONAL LATTICES; HOMOGENEOUS MIXTURES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LEPTONS; LIGHT NUCLEI; MATTER; MIXTURES; MUONS; NANOSECONDS LIVING RADIOISOTOPES; NUCLEI; ODD-ODD NUCLEI; POTASSIUM ISOTOPES; RADIOISOTOPES; RELAXATION; SOLUTIONS; SYMMETRY; TEMPERATURE RANGE; YEARS LIVING RADIOISOTOPES
Optional Information
- Copyright
- Copyright (c) 1997 Kluwer Academic Publishers