Study of structural, electrical, magnetic and optical properties of 0.65BaTiO3–0.35Bi0.5Na0.5TiO3–BiFeO3 multiferroic composite

Phase composition and dielectric properties of spark plasma sintered PbZr0.52Ti0.48O3

“…The relaxation peak is observed at frequencies below 1 MHz for SPS-800 and SPS-850 specimens. It can be clearly observed that the relaxation frequency shifts to higher value for samples SPS-900 and SPS-950 [45][46][47].…”

Phase formation, microstructure, electrical and magnetic properties of Mn substituted barium titanate

“…The fast decrease of the dielectric constants in the low frequency region (below 10 5 Hz), can be attributed to presence of different types of polarization in material which induced by the structural defects such as oxygen vacancies in the perovskite Mn-doped BaTiO 3 . As the frequency increase some of them could not follow the alternating field and may have less contribution to ‫ܭ‬ r ' [36]. The frequency independent dielectric constant at higher frequencies is known as static value of dielectric constant.…”

“…The frequency independent dielectric constant at higher frequencies is known as static value of dielectric constant. The reason behind this is failure of electric dipoles to follow the fast varying alternating electric field which increases the friction between them [36][37][38]. …”

Structure, Ferromagnetic, Dielectric and Electronic Features of the $$\hbox {LaBiFe}_{2}\hbox {O}_{6}$$ LaBiFe 2 O 6 Material

“…Its most interesting features are: a) its antiferromagnetic response, due to the collinear arrangement of two pseudocubic subnets, consisting of octahedral FeO 6 in a magnetic symmetry type G, but additionally evidences weak ferromagnetic response as a result of canted spin order in some cations Fe 3+ [12]; and b) its electrical polarizability, with a high dielectric constant at low frequencies, caused by oxygen vacancies and the high capacitance in parallel with a high resistance, formed by contact between grains of the polycrystalline system [13]. Moreover, the BiFeO 3 perovskite is one of the most studied multiferroics materials [14] because it exhibits antiferromagnetism with Néel temperature T N > 350 o C and ferroelectricity with Curie temperature T C above 800 °C [15]. The structure of this perovskite is rhombohedral at room temperature, which remains until temperatures higher than 600 o C [16].…”