Title :
Dielectric properties of modified BiFeO3 ceramics
Author :
Sanjoom, Kachaporn ; Pengpat, Kamonpan ; Eitssayeam, Sukum ; Rujijanagul, Gobwute ; Jarupoom, Parkpoom
Author_Institution :
Dept. of Phys. & Mater. Sci., Chiang Mai Univ., Chiang Mai, Thailand
Abstract :
The pure and modified BiFeO3 (BFO) ceramics (BFO doped with Sb) were prepared by a solid-state reaction method. Phase formation, microstructure, and dielectric properties were investigated. The samples showed a main phase of rhombohedral BFO. The additive inhibited grain growth, with average grain size decreasing from ~14 μm for pure BFO to 3μm for the modified BFO samples. The dielectric constant of the modified samples tended to improve with the additive. This improvement can be related a conduction mechanism in the studied samples.
Keywords :
additives; antimony; bismuth compounds; doping; electrical conductivity; ferroelectric ceramics; ferroelectric transitions; grain growth; grain size; materials preparation; multiferroics; permittivity; BiFeO3:Sb; Sb doping; additive inhibited grain growth; average grain size; conduction mechanism; dielectric constant; dielectric properties; microstructure; modified BiFeO3 ceramics; phase formation; rhombohedral BFO; solid-state reaction method; Ceramics; Films; X-ray scattering; ceramics; dielectric; multiferroeic; perovskite;
Conference_Titel :
Applications of Ferroelectric and Workshop on the Piezoresponse Force Microscopy (ISAF/PFM), 2013 IEEE International Symposium on the
Conference_Location :
Prague
DOI :
10.1109/ISAF.2013.6748733
