Direct evidence of soft mode behavior near the Burns' temperature in PbMg${}_{1/3}$Nb${}_{2/3}$O${}_3$ (PMN) relaxor ferroectric

S. Vakhrushev, S. Shapiro

Inelastic neutron scattering measurements of the relaxor ferroelectric PbMg${}_{1/3}$Nb${}_{2/3}$O${}_3$ (PMN) in the temperature range 490~K$<$T$<$880~K directly observe the soft…