Elastic constants of yttria (Y{sub 2}O{sub 3}) monocrystals to high temperatures
Journal Article
·
· Journal of Applied Physics
The single-crystal elastic moduli of yttria have been measured by Brillouin spectroscopy up to 1200{degree}C. The room temperature values obtained are C{sub 11}=223.7{+-}0.6GPa, C{sub 44}=74.6{+-}0.7GPa, and C{sub 12}=112.4{+-}1.1GPa. The resulting bulk and (Voigt{endash}Reuss{endash}Hill) shear moduli are K=149.5{+-}1.0GPa and G{sub VRH}=66.3{+-}0.8GPa, respectively. These agree much more closely with experimental values reported for polycrystalline samples than do previous single-crystal measurements. Linear least squares regressions to the variation of bulk and shear moduli with temperature result in derivatives of dK/dT={minus}17{+-}2MPa/{degree}C and dG{sub VRH}/dT={minus}8{+-}2MPa/{degree}C. Elastic anisotropy was found to remain essentially constant over the temperature range studied. {copyright} 2001 American Institute of Physics.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204182
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 12 Vol. 89; ISSN 0021-8979
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
Similar Records
Elastic constants of a monocrystal of superconducting YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]
Single-Crystal Elasticity of Zoisite, Ca2Al3Si3O12(OH) , by Brillouin Scattering
Journal Article
·
Sun Feb 28 23:00:00 EST 1993
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:6763158
Single-Crystal Elasticity of Zoisite, Ca2Al3Si3O12(OH) , by Brillouin Scattering
Journal Article
·
Sun Dec 31 23:00:00 EST 2006
· American Mineralogist
·
OSTI ID:930427