Influence of preparation method on phase formation, structural and magnetic properties of BiFeO3

Time-Dependent Impedance Spectroscopy to Unravel Non-cyclability and Current Fading in Hydroelectric Cells

“…32,33 Additionally, the spectra reveal distinct bands around 3400 and 1640 cm −1 , attributed to stretching modes and H−O−H bending vibrations of free or absorbed water, thereby confirming the water absorption. 31 The Raman spectra of the composite were recorded between 150 and 800 cm −1 wavenumbers at room temperature, as depicted in Figure 2e. The space group Fd3̅ m exhibits five Raman active modes (A 1g + E g + 3T 2g ) because of the vibration of metal-oxide ions at tetrahedral and octahedral sites in ferrite material.…”

Magnesium Bismuth Ferrite Nitrogen-Doped Carbon Nanomagnetic Perovskite: Synthesis and Characterization as a High-Performance Electrode in a Supercapacitor for Energy Storage

“…It was found that several peaks at 2θ values of 22.41°, 31.75°, 32.22°, 37.64°, 38.95°, 39.48°, 45.75°, 51.73°, 56.36°, and 56.96° correspond to (012), (104), (110), (113), (006), (202), (024), (122), (018), and (214) miller planes, respectively. These crystal planes are attributed to the rhombohedral perovskite phase ( R 3 c ) of BiFeO 3 (JCPDS no.. 86-1518). ,, The crystal structure of BiFeO 3 -NC (single phase R 3 c ) would change into another phase once doped with magnesium ions . This could be due to the partial transformation of the Bi–O bond into the Mg–O bond once the partial replacement of Bi 3+ ions by Mg 2+ ions occurred.…”

“…These crystal planes are attributed to the rhombohedral perovskite phase ( R 3 c ) of BiFeO 3 (JCPDS no.. 86-1518). 19b , 24b , 28 The crystal structure of BiFeO 3 -NC (single phase R 3 c ) would change into another phase once doped with magnesium ions. 29 This could be due to the partial transformation of the Bi–O bond into the Mg–O bond once the partial replacement of Bi 3+ ions by Mg 2+ ions occurred.…”

Influence of the Synthesis Process on the Physical Property Characteristics of BiFeO3 Ceramics Prepared by Flux-based Molten Salt and Solid-state Reaction Route: A Comparative Study

“…1,3 Among them, magnetoelectric (ME) materials exhibit cross-coupling between electric and magnetic polarization by applying magnetic and electric fields simultaneously, and this ME coupling effect provides an extra degree of freedom to suit these materials for the aforementioned devices. Moreover, the perovskite-based multiferroic compound BiFeO 3 (BFO), has a significant interest in the scientific community owing to its incredibly high Curie transition temperature (T C ∼ 1100 K) and G-type antiferromagnetic order below the Neel temperature (T N ∼ 643 K) characteristics 4 and it makes them a fascinating material, especially for non-volatile random access memory device application. However, the bulk BFO compound exhibits weak ferromagnetic ordering at 300 K due to their residual magnetic moment from the canted spin structure of Fe 3+ cations in the crystal lattice.…”

“…However, the bulk BFO compound exhibits weak ferromagnetic ordering at 300 K due to their residual magnetic moment from the canted spin structure of Fe 3+ cations in the crystal lattice. In addition, the magnetic spin ordering in this material is more complex owing to the Dzyaloshinskii-Moriya (DM) interaction originating from the canted antiferromagnetic (AFM) ordering of the Fe 3+ spin system, [4][5][6] which resulted in possessing a typical AFM behaviour with nearly zero coercivity. On the other hand, extensive research studies have shown that the structural distortion causes the occurrence of ferroelectricity in BFO due to the hybridisation of Bi 6s 2 and the oxygen lone pair and the spontaneous polarization arises specifically from the distortion of the oxygen octahedral layer along the [111] crystallographic axis.…”