Linear temperature dependence of the electric-quadrupole interaction at /sup 181/Ta impurities in lutetium
The electric-quadrupole hyperfine interaction at dilute tantalum impurities in lutetium metal has been measured between 10 and 655 K using time-differential perturbed angular correlations of the 133--482-keV cascade in /sup 181/Ta. The temperature dependence of the quadrupole frequency is described by the linear temperature relation n/sub Q/(T) = )338.7(11)(1-4.05(14) x 10/sup -4/T)) MHz. This result contradicts the assumptions of the phenomenological model for interaction between open 4f-orbital hosts and dilute closed-shell impurities previously proposed by the authors, whereby the system LuTa should exhibit the usual T/sup 1.5/ temperature dependence. The effect on closed-shell probes of the crystal-field-induced quadrupolar distortion of open-orbital host ions, if present at all, is much more complex than previously assumed.
- Research Organization:
- Department of Physics, University of Maryland, Baltimore County, Catonsville, Maryland 21228
- OSTI ID:
- 6544825
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 23:7; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ANGULAR CORRELATION
CORRELATIONS
CRYSTAL FIELD
E2-TRANSITIONS
ENERGY-LEVEL TRANSITIONS
HEAVY NUCLEI
HYPERFINE STRUCTURE
ISOTOPES
LUTETIUM ALLOYS
LUTETIUM BASE ALLOYS
MULTIPOLE TRANSITIONS
NUCLEI
ODD-EVEN NUCLEI
RARE EARTH ALLOYS
STABLE ISOTOPES
TANTALUM 181
TANTALUM ADDITIONS
TANTALUM ALLOYS
TANTALUM ISOTOPES
TEMPERATURE DEPENDENCE