| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1617274 | Journal of Alloys and Compounds | 2011 | 4 Pages |
High-density polycrystalline BiFeO3 compound was synthesized by high-pressure annealing. Measurements of crystal structure, magnetic, and ferroelectric properties were made on the sample. It was found that the sample was almost single phase with a distorted R3c structure. The results of the X-ray photoelectron spectra demonstrate that the oxidation state of Fe in the sample is Fe3+. The room-temperature field dependence of magnetization for BiFeO3 exhibits a hysteretic behavior. The observed weak ferromagnetism could be ascribed to the lattice distortion induced by the high-pressure annealing. In addition, the local ferroelectric performance of the sample was studied by piezoresponse force microscopy.
► A high-density polycrystalline BiFeO3 compound was synthesized by high-pressure annealing method. ► The sample showed weak ferromagnetic at room temperature, which could be attributed to the lattice distortion induced by the high-pressure annealing. ► Irregular domains were observed on the surface of the sample by piezoresponse force microscopy, and a typical hysteresis loop was obtained.
