Structural transformation and multiferroic properties of Sm and Ti co-doped BiFeO3 ceramics with Fe vacancies

A broad theoretical investigation of R‐3, R3c, and R‐3c polymorphs of FeCrO3

“…Thus, only the ilmenite polymorph has presented a good potential for photocatalytic purposes, while the corundum and LNO polymorphs are indicated only for electronic or other applications. This behavior was widely reported for BiFeO 3 material, once such material presented low stability of the charge carriers resulting in a high recombination rate 71‐77 . It is noteworthy that the effective mass values are affected by several features, such as chemical composition, structural defects, and the symmetry of the material.…”

Enhanced Magnetic Properties of BiFeO3 Thin Films by Doping: Analysis of Structure and Morphology

“…Raman spectroscopy is used to further detect the structure and phase transition information of all thin films, as presented in Figure 4 a. Group theory predicts that there are 13 active phonon modes (4A 1 + 9E) with A 1 and E symmetry in rhombohedrally distorted R3c space group for BFO [ 7 , 8 ]. Figure 4 b presents the vibration modes of A 1 and E. It can be observed that compared with the group theory, the BFO thin film in this paper shows less Raman active modes.…”

“…BFO, as the only room temperature multiferroic material found so far and has attracted tremendous attention among the limited choices provided by multiferroic materials. It presents the coexistence of antiferromagnetism with Neel point (T N ~643 K) and ferroelectricity with Curie point (T C ~1103 K) at room temperature [ 6 , 7 , 8 ]. BFO is a rhombohedral ABO 3 -type perovskite with R3c space group [ 5 , 9 ].…”

“…and co-A-B-sites substitution (Eu-Mn, Ce-Zr, Sm-Zr, etc.) [ 7 , 15 , 16 , 17 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Improved magnetization and reduced leakage current in Sm and Sc co-substituted BiFeO3

“…21,22 The mixed structures have been reported in various substituted/co-substituted BFO systems. 12,[23][24][25] The evolution of orthorhombic phase can be interpreted using Goldschmidt tolerance factor t, which is defined as 3þ -site (0.645 Å ) decreases the tolerance factor t according to its definition. The decrease in t induces lattice distortion which in turn leads to evolution of lower symmetric phase.…”