Abstract
BiFeO3 is an interesting material due to its multiferroic properties. It attracts attention due to its potential applications in spintronics and in microelectronics for data storage, among others. Single-phase bulk material from BiFeO3 is difficult to synthesize. The kinetics of perovskite phase formation most often leads to the presence of impurity phases. It has been shown that low levels of replacement of Bi with rare earth ions lead to stabilization of the perovskite phase. In the present work, Rietveld refinement of the crystal structure based on powder X-ray diffraction patterns was applied to study the influence of partial substitution of Bi by rare-earth (RE) elements with different ionic radii on structural and morphological properties of the ferrite phase. Substitution by large RE ions was found to preserve the rhombohedral symmetry of BiFeO3, whereas substitution by smaller RE ions led to the coexistence of two polymorphic perovskite phases with rhombohedral R3c and orthorhombic Pnma symmetries. The unit cell parameters as well as the interatomic distances and angles, not only around the A cation but also around the iron ions, were influenced by the substitution. The mean crystallite and particle size decreased with the decrease of ionic radius of substituting RE ion.
Funder
National Science Fund of Bulgaria
Subject
Geology,Geotechnical Engineering and Engineering Geology
Cited by
10 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. In situ study on enhanced plastic deformability of Lanthanum-doped Bismuth ferrite processed by flash sintering;Journal of the European Ceramic Society;2024-06
2. Recent advances of BiFeO3-based catalysts based on the piezoelectric built-in electric field;Molecular Catalysis;2024-03
3. Structural, optical, and photocatalytic properties of Bi1–RE FeO3 (RE=La, Ce, Pr, Nd, Sm; x=0, 0.05, 0.1) thin films;Journal of Rare Earths;2024-02
4. Effect of heavy rare‐earth substitution on physical properties of BiFeO3 thin films and their photocatalytic application;Journal of the American Ceramic Society;2024-01-30
5. Comments on the paper on the Nd-doped BiFeO3 by S. R. Dhanya and Jyotirmayee Satapathy, and published in J Mater Sci: Mater Electron (2023) 34:434, and on the corresponding correction published in J Mater Sci: Mater Electron (2023) 34:1484;Journal of Materials Science: Materials in Electronics;2023-09