TY - JOUR
T1 - Phase diagram and electrostrictive properties of Bi0.5 Na 0.5 TiO3-BaTiO3-K0.5 Na 0.5 NbO3 ceramics
AU - Zhang, Shan Tao
AU - Yan, Feng
AU - Yang, Bin
AU - Cao, Wenwu
N1 - Funding Information:
This work was supported by the Hong Kong Polytechnic University (Grant No. A-PH92), National Nature Science Foundation of China (Grant Nos. 10874069 and 10704021), the New Century Excellent Talents in University (Grant No. NCET-08-0279), and Natural Scientific Research Innovation Foundation in Harbin Institute of Technology (Grant No. HIT.NSRIF 201055).
PY - 2010/9/20
Y1 - 2010/9/20
N2 - Phase diagram of Bi0.5 Na0.5 TiO3 - BaTiO3 - K0.5 Na0.5 NbO3 ternary system has been analyzed and (0.94-x) BNT-0.06BT-xKNN (0.15≤x≤0.30) ceramics have been prepared and investigated. Pseudocubic structures were confirmed by x-ray diffractions and its preliminary Rietveld refinements. P-E, S-E, and S-P2 profiles (where P, E, and S denote polarization, electric field, and strain, respectively) indicate electrostrictive behavior of all ceramics. The compositions with x=0.20 and 0.25 show pure electrostrictive characteristics. The dissipation energy, electrostrictive strain, and electrostrictive coefficient have been determined and compared with other lead-free and lead-containing electrostrictors. The electrostrictive coefficient can reach as high as 0.026 m4 / C2, about 1.5 times of the value of traditional Pb-based electrostrictors.
AB - Phase diagram of Bi0.5 Na0.5 TiO3 - BaTiO3 - K0.5 Na0.5 NbO3 ternary system has been analyzed and (0.94-x) BNT-0.06BT-xKNN (0.15≤x≤0.30) ceramics have been prepared and investigated. Pseudocubic structures were confirmed by x-ray diffractions and its preliminary Rietveld refinements. P-E, S-E, and S-P2 profiles (where P, E, and S denote polarization, electric field, and strain, respectively) indicate electrostrictive behavior of all ceramics. The compositions with x=0.20 and 0.25 show pure electrostrictive characteristics. The dissipation energy, electrostrictive strain, and electrostrictive coefficient have been determined and compared with other lead-free and lead-containing electrostrictors. The electrostrictive coefficient can reach as high as 0.026 m4 / C2, about 1.5 times of the value of traditional Pb-based electrostrictors.
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U2 - 10.1063/1.3491839
DO - 10.1063/1.3491839
M3 - Article
AN - SCOPUS:77957111462
SN - 0003-6951
VL - 97
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 12
M1 - 122901
ER -