Moessbauer studies of dilute erbium impurities in zirconium hydrides

Conference · Sat Dec 31 23:00:00 EST 1977

OSTI ID:6404541

Shenoy, G K; Dunlap, B D; Westlake, D G

Hyperfine spectra are reported for Er present as a dilute impurity in the fluorite structure compound delta-ZrH/sub 1/ /sub 5/ and the tetragonally distorted fluorite epsilon-ZrH/sub 1/ /sub 87/. In both cases, the hyperfine spectra are identical and show cubic symmetry around the Er ion regardless of the host crystal structure, showing the formation of a locally cubic Er-hydrogen cluster. Paramagnetic relaxation frequencies are also identical in the two phases, in spite of large changes in the electronic density of states. Mechanisms for the formation of such Er-hydrogen clusters are discussed.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6404541
• Report Number(s): CONF-780868-1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ERBIUM 166
ERBIUM ISOTOPES
EVEN-EVEN NUCLEI
HYDRIDES
HYDROGEN COMPOUNDS
HYPERFINE STRUCTURE
IMPURITIES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MAGNETISM
MOESSBAUER EFFECT
NUCLEI
PARAMAGNETISM
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM HYDRIDES