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Study of Nanocrystalline BiMnO 3 ‐‐PbTiO 3 : Synthesis, Structural Elucidation, and Magnetic Characterization of the Whole Solid Solution
Author(s) -
Hungría Teresa,
Correas Covadonga,
Houdellier Florent,
Peña Octavio,
Vila Eladio,
Castro Alicia
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201200148
Subject(s) - mechanosynthesis , nanocrystalline material , multiferroics , materials science , bismuth , solid solution , characterization (materials science) , phase (matter) , curie temperature , nanotechnology , ferromagnetism , chemical engineering , ferroelectricity , condensed matter physics , chemistry , ball mill , physics , optoelectronics , organic chemistry , metallurgy , dielectric , engineering
In the last ten years, the study and the search for new multiferroic materials have been a major challenge due to their potential applications in electronic technology. In this way, bismuth‐containing perovskites (BiMO 3 ), and particularly those in which the metal M position is occupied by a magnetically active cation, have been extensively investigated as possible multiferroic materials. From the point of view of synthesis, only a few of the possible bismuth‐containing perovskites can be prepared by conventional methods but at high pressures. Herein, the preparation of one of these potential multiferroic systems, the solid solution x BiMnO 3 ‐(1− x )PbTiO 3 by mechanosynthesis is reported. Note that this synthetic method allows the oxides with high x values, and more particularly the BiMnO 3 phase, to be obtained as nanocrystalline phases, in a single step and at room temperature without the application of external pressure. These results confirm that, in the case of Bi perovskites, mechanosynthesis is a good alternative to high‐pressure synthesis. These materials have been studied from the point of view of their structural characteristics by precession electron diffraction and magnetic property measurements.