Deuteron magnetic resonance in tantalum, niobium, and vanadium deuterides
Deuteron magnetic resonance has been used to measure line shapes and relaxation rates in a series of Ta, Nb, and V deuterides between 190 and 580 K. Results are compared with corresponding data in hydrides to reveal dipolar, quadrupolar, and electronic rate contributions in various phases. Korringa constants, diffusion activation energies, and the effects of magnetic and electric field inhomogeneities are examined. Deuteron relaxation associated with hopping among tetrahedral interstitial sites in ..cap alpha.. phases is primarily quadrupolar. In the warm portions of the ..beta.. phase, the dominant relaxation is dipolar because the deuteron hopping occurs only among an ordered subset of interstitial sites. At lower temperatures quadrupolar relaxation again dominates, before decreasing around 200 K.
- Research Organization:
- Department of Physics, Washington University, St. Louis, Missouri 63130
- OSTI ID:
- 7090211
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:7; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ATOM TRANSPORT
CHARGED PARTICLES
DEUTERIDES
DEUTERIUM COMPOUNDS
DEUTERONS
ELECTRIC FIELDS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
LOW TEMPERATURE
MAGNETIC FIELDS
MAGNETIC RESONANCE
MEDIUM TEMPERATURE
NEUTRAL-PARTICLE TRANSPORT
NIOBIUM COMPOUNDS
RADIATION TRANSPORT
REFRACTORY METAL COMPOUNDS
RELAXATION TIME
RESONANCE
TANTALUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS