Intrinsic Compositional Inhomogeneities in Bulk Ti-Doped BiFeO3: Microstructure Development and Multiferroic Properties
Citations Over TimeTop 10% of 2013 papers
Abstract
Ti-doped BiFeO3 ceramics prepared by a mixed-oxide route were structurally characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM), giving evidence of the formation of an inner structure at the nanometric scale. The observed nanograins are separated by Ti-rich areas that originate due to the tendency of the titanium dopant to segregate from the perovskite lattice. Such a peculiar nanostructure is responsible for the changes produced in both the electrical and the magnetic properties of BiFeO3 upon titanium doping: the Ti-rich interfaces act as resistive layers that increase the direct-current (dc) resistivity of the material, while the existence of structural domains in the scale of tens of nanometers causes a ferrimagnetic-like behavior with a huge coercive field (on the order of 20 kOe), even at room temperature.
Related Papers
- → Can a Homometallic Chain Be Ferrimagnetic?(2000)137 cited
- → Origin of High Coercivity in Chemically Deposited Cobalt-Phosphorus Films(1966)23 cited
- → Study of the effect of defect sizes and their distribution on the coercivity of magnetic media(1994)8 cited
- → Angular Dependence of Coercivity in Sm2Fe17Cx Magnets(2000)
- → Angular Dependence of Coercivity in Sm2Fe17Cx Magnets(2000)