Crystalline electric field at the rare-earth site in Chevrel-phase RMo/sub 6/S/sub 8/ and RMo/sub 6/Se/sub 8/ from Moessbauer spectroscopy
The /sup 155/Gd Moessbauer-effect measurements in GdMo/sub 6/S/sub 8/ and GdMo/sub 6/Se/sub 8/ are reported. A quadrupole interaction of 545 +- 40 and 470 +- 60 MHz is measured at /sup 155/Gd in GdMo/sub 6/S/sub 8/ and GdMo/sub 6/Se/sub 8/, respectively. This indicates the presence of a large B/sub 2//sup 0/O /sub 2//sup 0/ term in the crystalline-electric-field (CEF) Hamiltonian in all rare-earth Chevrel-phase sulfides and selenides. The results imply that the previous analyses of CEF effects in these materials based on a cubic Hamiltonian are not valid. The importance of the CEF in understanding various measured magnetic and superconducting properties of the RMo/sub 6/S/sub 8/ compounds, where R denotes rare earth, is discussed.
- Research Organization:
- Materials Science and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439
- OSTI ID:
- 5701243
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 31:9; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360603* -- Materials-- Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
CRYSTAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVEN-ODD NUCLEI
GADOLINIUM 155
GADOLINIUM COMPOUNDS
GADOLINIUM ISOTOPES
GADOLINIUM SELENIDES
GADOLINIUM SULFIDES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MAGNETIC PROPERTIES
MOESSBAUER EFFECT
MOLYBDENUM COMPOUNDS
MOLYBDENUM SELENIDES
MOLYBDENUM SULFIDES
NUCLEI
PHYSICAL PROPERTIES
QUADRUPOLE MOMENTS
RARE EARTH COMPOUNDS
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
REFRACTORY METAL COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS