Hydrothermal synthesis and characterization of multiferroic Bi1−xLaxFeO3 crystallites

Hydrothermal Synthesis and Size‐Dependent Properties of Multiferroic Bismuth Ferrite Crystallites

“…Thus, the stability of antiferromagnetic phases could be influenced by the magnitude of the polarization. In addition, the T N values of 378.2°–365.8°C are slightly different with previous results for BFO‐based materials 31,33 . The discrepancy between the previous results and the present data is mainly attributed to the difference in synthesis route and processing parameters.…”

Preparation and characterization of Bi0.9M0.05N0.05FeO3(M = Sm, Gd; N = Sr, Y) polycrystalline multiferroic compounds

“…However, the diffraction peaks marked by ♦ and • indicate the existence of small amounts of the impurity phases Bi 2 Fe 4 O 9 and Bi 25 FeO 40 , respectively. These phases were reported to form during the synthesis of some BFO-based compounds [5,7,8,13,23,27,30], and could not be removed even by longer calcination times which could also lead to more volatilization of Bi. It should be noticed that the impurity phases are less in the GdSr and SmSr compounds, which clearly indicates the important role played by Sr 2+ in stabilizing the perovskite phase.…”

“…The transitions revealed by these curves are magnetic transitions from antiferromagnetic to paramagnetic. As listed in [7], and Bi 0.95 Gd 0.05 FeO 3 [9], respectively, measured by thermal analysis method. It is clear that most of these values (besides our cited values) are less than the well-established value of 370 °C measured for bulk BFO.…”

Effect of synthesis conditions on the preparation of BiFeO3 nanopowders using two different methods

“…To obtain nano-crystalline powders with high homogeneity and uniform structure, many techniques have been provided for the synthesis of the BiFeO 3 powders. These methods are coprecipitation [8], hydrothermal [9][10][11][12][13][14], solvothermal [15,16], sonochemical [17], microemulsion [17], polyacrylamide gel [18], ferrioxalate [19], sol-gel [6,[20][21][22][23], combustion synthesis [7,[24][25][26], molten-salt [27][28][29], tartaric acid-assisted gel strategy [30], polymeric precursor [31,32] and mechanochemical synthesis [33]. The chemical co-precipitation method ensures proper distribution of the various metals ions resulting to stoichiometric and smaller particles size product, compared to some of the other procedures.…”