Effects of Nb-doping on electric and magnetic properties in multi-ferroic BiFeO3 ceramics

Structural, Magnetic and Dielectric Properties of Sm3+ and Mn2+ Co-doped BiFeO3 Nanoparticles

“…The particle size of BSFMO reduces (57-19 nm) by increasing concentration of Mn 2+ doping. Hence, the variation in the grain morphology of BSFMO nanoparticles is attributed to the addition of Mn 2+ at the Fe 3+ sites, as the Mn 2+ concentration further increases to 25 mol% in BSFO, the particles were agglomerated and undergo a phase transition from rhombohedral to orthorhombic phase [26,27].…”

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

“…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.…”

“…With regards to donor dopants there is a more generalized agreement about their effect in decreasing the electrical conductivity. For example, it has been several times reported in literature that doping with Nb 5+ decreases the electrical conductivity of BiFeO 3 materials [66,118,141]. However, the reasons for this lower conductivity of the doped material have been ascribed to different factors such as a decrease in the oxygen vacancies concentration or a possible niobium segregation at the grain boundaries.…”

Effect of Cobalt Ferrite on Electrical and Magnetic Properties of Bismuth Ferrite.

“…Bismuth ferrite (BFO) is a well known single phase multiferroic material having distorted perovskite structure with anti-ferromagnetic Neel temperature (T N~3 70 0 C) and ferroelectric Curie temperature (T C~8 50 0 C) [4]. Bismuth ferrite and bismuth ferrite based multi-ferroic materials are widely used in ceramics and thin films forms [5][6][7][8][9]. The ferroelectric property of BFO is very excellent but it has weak ferromagnetic property.…”