ON THE EXISTENCE OF A CRITICAL POINT FOR THE PHASE TRANSITION IN CERIUM
Journal Article
·
· Phys. and Chem. Solids
A piston-displacement technique was used to examine the phase transition in cerium to 20,000 atm and 575 deg K. The results are in agreement with previous thermal data, and show that the volume change decreases with increasing temperature, extrapolating to zero somewhere near 630 deg K and 20,000 atm. Above roughly 500 deg K and 15,000 atm, however, the transition becomes increasingly spread out in pressure at constant temperature; and it becomes quite difficult to assign values to the transition pressures and the volume changes. Although there are definite indications that the nature of the transition is changing at these pressures and temperatures, the possibility that the transition is merely becoming sluggish cannot be ruled out. (auth)
- Research Organization:
- Ames Lab., Ames, Iowa
- NSA Number:
- NSA-15-005406
- OSTI ID:
- 4084332
- Report Number(s):
- IS-52
- Journal Information:
- Phys. and Chem. Solids, Journal Name: Phys. and Chem. Solids Vol. Vol: 15
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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