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Lagrangian and energy forms for retrieving the impulse response of the Earth due to random electromagnetic forcing
(American Physical Society, 2011-08-10)
We distinguish between trivial and nontrivial differences in retrieving the real or imaginary parts of the Green's function. Trivial differences come from different Green's function definitions. The energy and Lagrangian ...
General rules for predicting phase transitions in perovskites due to octahedral tilting
(American Physical Society, 2005-07-08)
Recent experiments on several oxide perovskites reveal that they undergo tilt phase transitions to higher-symmetry phases on increasing pressure and that dT(c)/dP < 0, contrary to a general rule previously proposed for ...
Pressure-induced structural transformations in pure and Ru-doped 0.9PbZn(1/3)Nb(2/3)O(3)-0.1PbTiO(3) near the morphotropic phase boundary
(American Physical Society, 2012-01-17)
Pressure-induced structural transformations in relaxor-based perovskite-type (ABO(3)) 0.9PbZn(1/3)Nb(2/3)O(3)-0.1PbTiO(3) single crystals which have a very high piezoelectric response were studied by single-crystal x-ray ...