Title :
High temperature “Hard” piezoelectric ceramics of BiScO3-PbTiO3-Pb(Nb, Mn)O3 with Fe2O3 addition
Author :
Jianguo Chen ; Qiang Li ; Guoxi Jin ; Jinrong Cheng
Author_Institution :
Sch. of Mater. Sci. & Eng., Shanghai Univ., Shanghai, China
Abstract :
“Hard” piezoelectric materials of Fe modified 0.37BiScO3-0.6PbTiO3-0.03Pb(Mn1/3Nb2/3)O3 (BS-PT-PMN-Fe) ceramics were prepared by traditional solid state reaction method. X-ray diffraction (XRD) analysis revealed that BS-PT-PMN-Fe ceramics showed single perovskite structure with dominant tetragonal phase, and the c/a ratios was enlarged with Fe content. The grain size of BS-PT-PMN-Fe ceramics decreased obviously from 25 to 1 μm with the increase of Fe content from 0 to 3 mol%. The dielectric and piezoelectric properties of BS-PT-PMN-Fe ceramics with 2 mol% Fe addition are as follows: ε = 600, tanδ = 0.008, d33 = 240, Qm = 500, and kp = 0.38, which were comparable to those of PZT-4 traditional “hard” piezoelectric ceramics. Both piezoelectric and dielectric properties were stable from room temperature up to 400 °C, about 250 °C higher than those of conventional PZT piezoelectric ceramics. In addition, the temperature coefficient of resonance frequency (TCF) of ceramics with 3 mol% Fe addition was -21 ppm/°C, which is one tenth that of PZT ceramics.
Keywords :
X-ray diffraction; bismuth compounds; grain size; iron compounds; lead compounds; materials preparation; piezoceramics; piezoelectricity; BiScO3-PbTiO3-Pb(NbMn)O3-Fe2O3; Fe content; Fe modified ceramics; X-ray diffraction; XRD analysis; c-a ratios; dielectric properties; dominant tetragonal phase; grain size; high temperature hard piezoelectric ceramics; piezoelectric properties; resonance frequency temperature coefficient; single perovskite structure; size 1 mum to 25 mum; solid state reaction method; temperature 293 K to 400 degC; Ceramics; Dielectric losses; Iron; Q-factor; Resonant frequency; Temperature; “Hard” piezoelectric ceramics; BiScO3-PbTiO3; high temperature piezoelectrics;
Conference_Titel :
Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop (ISAF/ISIF/PFM), 2015 Joint IEEE International Symposium on the
Conference_Location :
Singapore
DOI :
10.1109/ISAF.2015.7172727
