Experimental equations of state for calcium, strontium, and barium metals to 20 kbar from 4 to 295 K
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Ames Laboratory-U.S. Department of Energy, Iowa State University, Ames, Iowa 50011 (US)
Piston-displacement measurements have been used to determine the equations of state of high-purity calcium and strontium (both fcc) and barium (bcc) metals to 20 kbar from 4 to 295 K. For each metal, the results have roughly 1% accuracy for the {ital P}=0 bulk modulus at 295 K and for the total volume change with pressure. The results also give the change with temperature of both the {ital P}=0 volume and the isothermal bulk modulus for these metals. While the bulk moduli for calcium and strontium are dependent only on the volume, those for barium show a significant temperature dependence with decreasing volume. Specifically, the bulk modulus for barium at 10 kbar is roughly 3% smaller at 295 K than would be predicted from the 0-K value at the same volume. Differences between the pressure-volume relations for bare samples and for those which were jacketed with indium metal are not understood.
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6978745
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:6; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALKALINE EARTH METALS
BARIUM
BCC LATTICES
CALCIUM
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DISPLACEMENT GAGES
ELASTICITY
ELEMENTS
EQUATIONS
EQUATIONS OF STATE
EXPANSION
FCC LATTICES
LOW TEMPERATURE
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
METALS
PISTONS
STRONTIUM
TENSILE PROPERTIES
THERMAL EXPANSION
ULTRALOW TEMPERATURE
VERY HIGH PRESSURE
VERY LOW TEMPERATURE
360104* -- Metals & Alloys-- Physical Properties
ALKALINE EARTH METALS
BARIUM
BCC LATTICES
CALCIUM
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DISPLACEMENT GAGES
ELASTICITY
ELEMENTS
EQUATIONS
EQUATIONS OF STATE
EXPANSION
FCC LATTICES
LOW TEMPERATURE
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
METALS
PISTONS
STRONTIUM
TENSILE PROPERTIES
THERMAL EXPANSION
ULTRALOW TEMPERATURE
VERY HIGH PRESSURE
VERY LOW TEMPERATURE