TY - JOUR
T1 - Enhanced piezoelectric properties of Fe2O3-2TiO 2 codoped Li0.05(Na0.5K0.5)0. 95(Nb0.975Sb0.025)O3 lead-free ceramics with uniform microstructure
AU - Zhao, Yongjie
AU - Zhao, Yuzhen
AU - Huang, Rongxia
AU - Liu, Rongzheng
AU - Zhou, Heping
PY - 2011/12/15
Y1 - 2011/12/15
N2 - In this study, Fe2O3 and TiO2 codoped Li0.05(Na0.5K0.5)0.95(Nb0.975Sb 0.025)O3[(1-x) Li0.05(Na0.5K 0.5)0.95 (Nb0.975Sb0.025)O3- x(Fe2O3-2TiO2) (x = 0-0.008)] ceramics were prepared by conventional solid state reaction method, and the microstructure and electrical properties of these samples were investigated. The X-ray diffraction and Raman scattering results show the phase structure of the ceramics undergoes with the increase of Fe2O3-2TiO2 content. The grain size distribution of non-doped Li0.05(Na0.5K 0.5)0.95(Nb0.975Sb0.025)O3 ceramics was relatively wide. The microstructure was composed of grains ranging 0.2-3.0λm in size. However, with increasing Fe2O 3-2TiO2 content, the grain size distribution became relatively narrow. Meanwhile, the piezoelectric coefficient (d33) and electromechanical coupling coefficient (kp) showed peak values of 252 pC/N, and 0.424, respectively, which were achieved in the sample with x = 0.002 sintered at 1020 °C.
AB - In this study, Fe2O3 and TiO2 codoped Li0.05(Na0.5K0.5)0.95(Nb0.975Sb 0.025)O3[(1-x) Li0.05(Na0.5K 0.5)0.95 (Nb0.975Sb0.025)O3- x(Fe2O3-2TiO2) (x = 0-0.008)] ceramics were prepared by conventional solid state reaction method, and the microstructure and electrical properties of these samples were investigated. The X-ray diffraction and Raman scattering results show the phase structure of the ceramics undergoes with the increase of Fe2O3-2TiO2 content. The grain size distribution of non-doped Li0.05(Na0.5K 0.5)0.95(Nb0.975Sb0.025)O3 ceramics was relatively wide. The microstructure was composed of grains ranging 0.2-3.0λm in size. However, with increasing Fe2O 3-2TiO2 content, the grain size distribution became relatively narrow. Meanwhile, the piezoelectric coefficient (d33) and electromechanical coupling coefficient (kp) showed peak values of 252 pC/N, and 0.424, respectively, which were achieved in the sample with x = 0.002 sintered at 1020 °C.
KW - Enhanced property
KW - Lead-free piezoelectrics
KW - Uniform microstructure
UR - http://www.scopus.com/inward/record.url?scp=84865733300&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2011.09.070
DO - 10.1016/j.matchemphys.2011.09.070
M3 - Article
AN - SCOPUS:84865733300
SN - 0254-0584
VL - 131
SP - 32
EP - 36
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
IS - 1-2
ER -