Effect of Pb-doping on dielectric properties of BiFeO3 ceramics

Synthesis, microstructure and properties of BiFeO₃-based multiferroic materials: A review

“…In the case of acceptor dopants, the substitution will introduce an excess of negative charge. This can be compensated by different defect reactions, like creation of oxygen vacancies [119] or oxidation of pre-existing Fe 2+ ions to Fe 3+ [117]. In contrast, in case of donor dopants, the substitution will introduce an excess of positive charge.…”

“…As described in the literature the grain growth during sintering can be inhibited through the addition of dopants as La 3+ [108], Sm 3+ [116], Zn 2+ [65], Pb 2+ [117], Nb 5+ [63,118] or Ti 4+ [61,62]. Grain growth control by the effect of a third component is in fact very common in polycrystalline ceramics.…”

“…According to Mazumder et al [117] [140] has also been reported to decrease the leakage current of BiFeO 3 materials. However, many other works propose that the electrical conductivity of bismuth ferrite materials rises upon substitution with acceptor dopants.…”

Sol–gel synthesis and investigation of structural, electrical and magnetic properties of Pb doped La0.1Bi0.9FeO3 multiferroics

“…[16]. The research on A-site doping with diamagnetic ions, for instance, in Bi 1-x A x FeO 3 (A = La, Ba, Pb, Sr, Ca) has been proved to be important for the investigation of the influence of crystal chemistry on weak ferromagnetic moment values and thus can contribute to the development of relationship between the crystal structure, magnetic properties and magnetoelectric coupling in BFO based compounds [17][18][19][20][21][22][23][24].…”

“…(1.2 emu/g) which had the biggest ionic radii among the other elements. Some groups [21][22][23] have concentrated on the Pb doping in BFO because of the fact that ionic radii of Pb 3? (133 pm) is larger than Bi 3?…”