Peculiarities of a Solid-State Synthesis of Multiferroic Polycrystalline BiFeO3

• DOI: 10.1021/cm071730+
• Publication Date: 2007-10-23T04:26:52Z
• Authors: Matjaz Valant; Anna-Karin Axelsson; Neil Alford

Studies of a BiFeO3 synthesis were performed to identify reasons for the appearance secondary phases, Bi25FeO39- and Bi2Fe4O9-type in reaction product. X-ray diffraction microstructural analyses, on samples with different concentrations impurities, showed that impurities starting material crucially influence phase composition A fraction generated phases strongly depends nature concentration impurities. The experimental results can be explained by theoretical consideration ternary relations between Bi2O3, Fe2O3, an impurity oxide. Single-phase polycrystalline was synthesized from ultrapure oxides. To avoid using expensive oxides, techniques reducing products developed.