Structural, magnetic and magnetodielectric characteristics of Ni doped Ba0.95Sr0.05TiO3 single phase multiferroic compound

Effect of Ni Substitution on Structural, Dielectric, and Ferroelectric Properties and Variation in Magnetocapacitance of Single-Phase Ba0.7Pb0.3TiO3 Ceramic

“…The highest value of the magnetodielectric coefficient was estimated for the composite with the highest Ni content, that is, at x = 0.15, which is −2.86% at an applied frequency of 100 Hz. The estimated value of the magnetodielectric coupling coefficient was comparable to that reported for B-site of substitution of Fe and Ni in the ferroelectric lattice of Ba 0.95 Sr 0.05 TiO 3 reported by S. G. Dhumal, et al 3,12 which is 3 and 6 at 100 Hz respectively and higher than that of reported by A. Rani et al 10 which is 1.80 for Co-doped BaTiO 3 multiferroic ceramic. Further, from Table V, it can be seen that the value of the MD coefficient decreases with an increase in the applied frequency strength, indicating that intrinsic effects such as magnetoresistance and magnetostriction are mainly dominant to magnetodielectric coupling.…”

“…This sudden increase in the material over a higher temperature range at certain applied frequencies implies the dominance of interfacial polarization. 3,12 The dielectric loss tangent observed at a lower frequency range in the case of Ba 0.7 Pb 0.3 TiO 3 has the aforementioned increase at a lower temperature (∼85 °C), similar to that observed in the dielectric constant behavior. Interestingly, a lower value of the dielectric loss was noted for the samples with Ni substitution, which is as expected and indicates the formation of extrinsic oxygen vacancies.…”

“…A dramatic decrease in the ferroelectric parameters reflects the change in the ferroelectric nature, which is consistent with the decrease in the Curie temperature (Tc) with increasing Ni concentration. 12,30 The drastic change in the ferroelectric curve of the pure Ba 0.7 Pb 0.3 TiO 3 (BPT) with the substitution of Ni ions i.e. gradual transformation of the wide loop to the narrow loop implies these materials could be potential candidates for energy storage capacitors.…”

“…ECS Journal of Solid State Science and Technology, 2022 11 043009 grain boundaries in the dielectric ABO 3 perovskite lattice, which results in variations in the capacitance value, dielectric loss, and interesting multiferroic properties. 7,12 The investigations on structural, electrical, ferroelectric, and piezoelectric properties of the ABO 3 perovskite lattices like BaTiO 3 or PbTiO 3 and the combination of these two systems can be found in the past works of literature. Meanwhile, various researchers also investigated the electrical, structural, ferroelectric, and magnetic properties of either BaTiO 3 or either PbTiO 3 and their other ferroelectric systems with B-site substitution of acceptor (magnetic) ions like Co, Fe, Ni, Mn.…”