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cond-mat.mtrl-sci2012
Evidence for anisotropic polar nanoregions in relaxor PMN: A neutron study of the elastic constants and anomalous TA phonon damping
C. Stock, P. M. Gehring, H. Hiraka +6
We use neutron scattering to characterize the acoustic phonons in the relaxor PMN and demonstrate the presence of an anisotropic damping mechanism directly related to short-range,…
cond-mat.mtrl-sci2009
Soft phonon columns on the edge of the Brillouin zone in the relaxor PbMg1/3Nb2/3O3
I. P. Swainson, C. Stock, P. M. Gehring +7
We report lattice dynamical measurements, made using neutron inelastic scattering methods, of the relaxor perovskite PbMg1/3Nb2/3O3 (PMN) at momentum transfers near the edge of the…