Dielectric, elastic, anelastic and conductivity behaviour of ferroelectromagnetic composites, Ni<inf>0.5</inf>Zn<inf>0.5</inf>Fe <inf>1.95</inf>O<inf>4-δ</inf> + Ba<inf>0.8</inf>Pb<inf>0.2</inf>TiO <inf>3</inf>

Ferroelectromagnetic composites with compositions, X Ni0.5 Zn0.5Fe1.95O4-δ + (1-X) Ba 0.8Pb0.2TiO3, in which X varies as 0, 0005, 0010, 0015, 0020, 0040, 0060, 0080 and 1 in mole %, were prepared by conventional ceramic double sintering process. The presence of two phases was confirmed by X-ray diffraction. The temperature variation of dielectric constant, ε′, dielectric loss, tan δ, d.c. conductivity, a.c. conductivity, elastic and anelastic behaviour of ferrite-ferroelectric composites were studied in the temperature range 30-350°C. The a.c. conductivity measurements on these composites in the frequency range 100 Hz-1 MHz at room temperature reveal that the conduction mechanism is due to small polaron hopping. The dielectric and elastic data were discussed in the light of phase transitions. © Indian Academy of Sciences.