1. Electric/magnetic behaviors of Nd/Ti co-doped BiFeO3 ceramics with morphotropic phase boundary
- Author
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Dechang Jia, Huijiadai Luo, Fangzhe Li, Hua Ke, Liwei Zhang, Cao Lu, Wen Wang, Yu Zhou, Hongjun Zhang, and Fuli Wang
- Subjects
010302 applied physics ,Diffraction ,Permittivity ,Phase boundary ,Materials science ,Magnetic domain ,Condensed matter physics ,Mechanical Engineering ,Metals and Alloys ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Microstructure ,01 natural sciences ,Ferroelectricity ,symbols.namesake ,Mechanics of Materials ,0103 physical sciences ,symbols ,General Materials Science ,Orthorhombic crystal system ,0210 nano-technology ,Raman spectroscopy - Abstract
Morphotropic phase boundaries (MPB) consisting of rhombohedral, nonpolar orthorhombic and orthorhombic bridging phases were formed within the range of 0.1 ≤ x ≤ 0.2 in Bi1-xNdxFe0.97Ti0.03O3 ceramics. The intricate phase coexistence was verified by X-ray diffraction refinements, new modes at ~305 cm−1 in Raman spectra and microstructure analyses. Impedance tests confirmed the MPB ranges via resistance fluctuations and revealed additional arcs from phase boundaries. Ferroelectric and magnetic properties were synchronously improved at MPB resulting in the apparent magnetodielectric effect with a permittivity change rate of ~1.5% at 10000 Oe. Additionally, magnetic domains were reversed at low voltages. more...
- Published
- 2019
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