The effects of N2 atmosphere annealing on the physical properties of BiFe0.5Mn0.5O3 ceramic

Effects of different high‐pressure syntheses on the magnetization reversal properties of Bi2FeMnO6 ceramics

“…The grain size for the sample synthesized under 5 GPa is 214 nm, which is much smaller than the grain size of atmospheric pressure synthetic samples reported before. [39] Furthermore, the SEM confirmed XRD results and showed the presence of distortions between the samples with different synthetic pressures.…”

“…The Fe(Mn)–O–Fe(Mn) bond angle is a measure of the tilting of the Fe(Mn)O 6 octahedra, and the Fe(Mn)–O bond length is related to the buckling of the octahedron. [ 39 ] Importantly, a significant increase in the Fe(Mn)–O–Fe(Mn) bond angle was clearly seen compared to that reported for 141.4° [ 39 ] and 153.90°. [ 38 ] In addition, the average bond lengths of Bi–O and Fe(Mn–O are also changed between with and without high‐pressure syntheses.…”

“…It can be indexed in a rhombohedral structure with R3c space group, which is similar to the structure of the paternal non-modified BiFeO 3 and agrees with the reports of Mn-doped BiFeO 3 ceramics prepared by solidstate reaction at ambient pressure. [38,39] An amount of secondary phases Bi 2 O 3 (Pn-3m) (marked by "*" in Figure 2) is detected.…”