1. Structural and multiferroic properties of Pr and Ti co-doped BiFeO 3 ceramics
- Author
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Wei Wang, Linfeng He, Guohai Wei, Yuntao Liu, Dongfeng Chen, Wu Meimei, Han Songbai, and Jiao Xuesheng
- Subjects
010302 applied physics ,Diffraction ,Materials science ,Ferromagnetic material properties ,Process Chemistry and Technology ,Analytical chemistry ,Nanotechnology ,02 engineering and technology ,Spin structure ,021001 nanoscience & nanotechnology ,Polarization (waves) ,01 natural sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Magnetization ,visual_art ,0103 physical sciences ,Materials Chemistry ,Ceramics and Composites ,visual_art.visual_art_medium ,Multiferroics ,Dielectric loss ,Ceramic ,0210 nano-technology - Abstract
Bi 0.9 Pr 0.1 FeO 3 (BPF), BiFe 0.9 Ti 0.1 O 3 (BFT), Bi 0.9 Pr 0.1 Fe 0.9 Ti 0.1 O 3 (BPFT-10), and Bi 0.9 Pr 0.1 Fe 0.95 Ti 0.05 O 3 (BPFT-5) ceramics are prepared for a comparison study. X-ray diffraction indicates that all of the samples crystallize in rhombohedral structures with R 3c symmetry. The Pr and Ti co-doped samples show an especially low dielectric loss of 0.02–0.04 throughout the entire investigated frequency range. A markedly improved polarization hysteresis loop is successfully achieved for samples BPFT-10 and BPFT-5, and their remnant polarization P r values are 0.11 and 0.29 μC/cm 2 , respectively. Magnetic measurements indicate that the substitution of Ti 4+ for Fe 3+ improves the ferromagnetic properties due to the suppression of the spiral spin structure. A remnant magnetization M r of 0.176 emu/g was observed for BPFT-10 at 5 K.
- Published
- 2016