INVESTIGADORES
PONCE ALTAMIRANO Claudio Ariel
artículos
Título:
Mechanical anisotropy and thermoacoustic properties of SnO2 under high pressures: an ab initio approach
Autor/es:
C.A. PONCE; R.A. CASALI; M.A. CARAVACA
Revista:
HIGH PRESSURE RESEARCH
Editorial:
TAYLOR & FRANCIS LTD
Referencias:
Lugar: Londres; Año: 2013 p. 1 - 9
ISSN:
0895-7959
Resumen:
The effects of hydrostatic pressures on the electronic, thermoacoustic and elastic anisotropies of SnO2 in the rutile structure is analyzed up to 18 GPa. It is found that the polycrystalline bulk modulus B increases from 227 to 312 GPa between 0 and 18 GPa while the Young and shear moduli slightly decrease with pressures. The resulting polycrystalline ductility increases with pressures. The speed of the sound for longitudinal waves increases with pressure, while the transverse polarizations and the Debye temperature decrease. Large crystal anisotropy for the shear planes {001} between 110 and 010 directions under pressures, associated with the phase transition to the Cl2Ca, is found.
