Ac electrical conductivity and magnetic properties of BiFeO3–CoFe2O4 nanocomposites

Room temperature multiferroic and magnetodielectric properties in Sm and Sc co-doped BiFeO3ceramics

“…, and Fe 3+ /Fe 2+ fluctuation induced-localized charges in the BFO ceramics are able to follow the frequency of electric field, which contribute to the high dielectric constant and loss at low frequencies [25,26]. In our samples, the increased ε r and tan δ values at lower frequencies may result 100 200 300 400 500 600 700 x from these charged defects due to the Bi evaporation during sintering.…”

Preparation and characterization of Bi2Fe4O9/NiFe2O4 composite powders

“…Obviously, compositing with strong magnetic phase is one of the simple but feasible methods to improve the magnetic properties [16]. The composites which are artificial systems have attracted an increasing interest in view of various applications because they contain at least two phases with different physical and chemical properties separated at microscopic level in the final product [17].…”

Multiferroic and magnetoelectric properties of BiFeO 3 -CoFe 2 O 4 -poly(vinylidene-flouride) composite films

“…As demonstrated by Park et al [43], with decrease of particle size the magnetization of BFO increases. Moreover, it should be noted here that the strain existing in the grain boundaries between BFO and CFO might change the spin orientation of BFO grains in the composite [44]. The presence of an ordered magnetic structure is evident from the typical ferromagnetic behavior shown by the composite films.…”