Anomalous behavior of the Grueneisen parameter in cerium near the high-pressure phase transition

Journal Article · Thu May 01 00:00:00 EDT 1980 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.327985· OSTI ID:5398648

Ramakrishnan, J; Kennedy, G C

Measurements have been made of the value (partialT/partialP)/sub s/ as a function of pressure up to 32 kbar, at room temperature (296.7 /sup 0/K), for cerium through its electronic transition at 7.5 kbar. The thermodynamical Grueneisen parameter is calculated using the thermodynamic relation ..gamma../sub th/=(B-italic/sub s//T) (partialT/partialP)/sub s/, where B/sub s/ is the adiabatic bulk modulus. An anomalous increase of ..gamma../sub th/ in the low-pressure phase and a rapid decrease after the transition are obtained for cerium.

• Research Organization: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90024
• DOE Contract Number: AT03-76ER70171
• OSTI ID: 5398648
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 51:5; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADIABATIC PROCESSES
CERIUM
ELEMENTS
EQUATIONS
GRUENEISEN CONSTANT
MATHEMATICAL MODELS
MEDIUM TEMPERATURE
METALS
PHASE TRANSFORMATIONS
PRESSURE DEPENDENCE
RARE EARTHS
THERMODYNAMICS
VERY HIGH PRESSURE