Creep of barium titanate perovskite: a contribution to a systematic approach to the viscosity of the lower mantle

Details Creep of barium titanate perovskite: a contribution to a systematic approach to the viscosity of the lower mantle Creep of barium titanate perovskite: a contribution to a systematic approach to the viscosity of the lower mantle

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pepi...55..187b&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 55, Issue 1-2, p. 187-199.

Physics

23

Scientific paper

In order to gather information on the high-temperature creep of minerals with perovskite structure we have investigated the creep of barium titanate perovskite.
Creep experiments were performed between 1150 and 1570°C, under stresses ranging from 9 to 25 MPa. The samples were single crystals oriented to glide on {001} planes. The dislocation microstructures were investigated by transmission electron microscopy. Global inversion of the results yields a power law with a stress exponent n = 3.6 and an activation energy Q = 469 +/- 27 kJ mol-1.

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