Chemical Composition of Dielectric and Piezoelectric Properties for BaTiO3-Bi (Mg1/2Ti1/2)O3-BiFeO3 System Ceramics

Autor: Kouichi Nakashima, Nobuhiro Kumada, Yoshihiro Kuroiwa, Ryuta Mitsui, Satoshi Wada, Ichiro Fujii
Rok vydání: 2013
Předmět:
Zdroj: Key Engineering Materials. 582:84-87
ISSN: 1662-9795
DOI: 10.4028/www.scientific.net/kem.582.84
Popis: 1-x-y)BaTiO3-xBi (Mg1/2Ti1/2)O3-yBiFeO3 ceramics were prepared by a conventional solidstate synthesis, and crystal structure and electric properties were investigated. Synchrotron X-ray diffraction pattern revealed that a single perovskite phase was obtained for samples at x=0.05-0.15, y=0.46.5-73.5. Splitting of the (111) peak was observed when (x, y) = (0.050, 0.685) and (0.050, 0.735) indicating that crystal structure of samples changed from a pseudo-cubic phase to a rhombohedral phase with increasing BF. As the BF content increased, the Curie temperature increased. The largest maximum strain (Smax) over the applied maximum electric field (Emax) value (Smax / Emax) of 300 pm/V was observed for 0.365BT-0.050BMT-0.585BF at 25 °C and 1Hz with the Curie temperature of 390 °C.
Databáze: OpenAIRE