Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8015934 | Materials Letters | 2016 | 4 Pages |
Abstract
An enhanced low-frequency dielectric constant, (εâ²â¼104), and ferromagnetic behavior at room temperature were observed in Bi0.99Y0.01Fe0.99Ni0.01O3 (BYFNO) ceramic sintered by a modified solid state reaction method. The anti-ferromagnetic (AFM) nature of BiFeO3 (BFO) changed to ferromagnetic (FM) with saturation magnetization, Ms, and coercivity Hc values of â¼0.03μB/f.u. and â¼250Oe, respectively at room temperature. The XRD patterns revealed that the co-doping of Y3+ and Ni2+ ions at the Aâ and Bâ sites of BiFeO3 (BFO) resulted in a rhombohedrally distorted perovskite structure. This result was discussed in terms of the modification of the cycloidal spin structure, presence of Ni2+ carriers and preservation of oxygen vacancy during the sintering process. This enhanced properties entitle the Bi0.99Y0.01Fe0.99Ni0.01O3 one of the few multiferroic materials that exhibits both significant ferromagnetic and dielectric behaviors at room temperature.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
P. Banerjee, A. Jr.,