Relaxor ferroelectric and magnetic properties of $Ba6CoNb9O30$ ceramics with tungsten bronze structure Available to Purchase

Dielectric characteristics of $Ba6CoNb9O30$ tetragonal tungsten bronze ceramics have been evaluated over a broad temperature and frequency range. A broad dielectric peak with strong frequency dispersion is observed at 140–225 K, which well follows the Vogel–Fulcher relationship and indicates the relaxor ferroelectric nature in the present ceramics. The $P-E$ hysteresis loops varying with temperature are consistent with this dielectric relaxation process and provide the further evidence on the relaxor ferroelectric nature. The nonlinear magnetic hysteresis curve is observed in $Ba6CoNb9O30$ ceramics at 5 K, indicating the soft magnetic behavior which is related to the tetragonal tungsten bronze crystal structure containing magnetic ions of $Co3+$⁠.