Elasticity of W-Phase Zirconium
Compressional (VP) and shear wave (VS) velocities as well as unit-cell volumes of the {omega} phase of Zr have been measured at high pressure (6.9-10.9 GPa) at room temperature using ultrasonic interferometry in conjunction with synchrotron x radiation. Both VP and VS as well as the adiabatic bulk (KS) and shear (G) moduli exhibit monotonic increase with increasing pressure. Using a finite strain equation of state approach, the elastic bulk and shear moduli and their pressure derivatives are derived from the directly measured velocities and densities, yielding KS0=104.0 (16) GPa, G0=45.1 (9) GPa, KS0'=2.8 (2), and G0'=0.6 (1) independent of pressure calibration. The low pressure dependence of KS0 and G0 may be attributed to the pressure-induced progressive s-d electron transfer in the {omega}-Zr as suggested by previous Raman studies as well as static compressions at high pressure.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 960011
- Report Number(s):
- BNL-82997-2009-JA; PRBMDO; TRN: US1005868
- Journal Information:
- Physical Review B: Condensed Matter and Materials Physics, Vol. 76, Issue 14; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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