A Neutron Elastic Diffuse Scattering Study of PMN

Details A Neutron Elastic Diffuse Scattering Study of PMN A Neutron Elastic Diffuse Scattering Study of PMN

2003-08-08

arxiv.org/abs/cond-mat/0308170v2

Physics

Condensed Matter

Materials Science

Submitted to PRB

Scientific paper

10.1103/PhysRevB.69.064112

We have performed elastic diffuse neutron scattering studies on the relaxor Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_3$ (PMN). The measured intensity distribution near a (100) Bragg peak in the (hk0) scattering plane assumes the shape of a butterfly with extended intensity in the (110) and (1$\bar{1}$0) directions. The temperature dependence of the diffuse scattering shows that both the size of the polar nanoregions (PNR) and the integrated diffuse intensity increase with cooling even for temperatures below the Curie temperature $T_C \sim 213$ K.

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