Evolution of the electrical properties of K0.5Bi0.5TiO3 as a result of prolonged sintering
作者： J. König , D. Suvorov
DOI: 10.1016/J.JEURCERAMSOC.2015.04.003
关键词: Ferroelectricity 、 Materials science 、 Ceramic 、 Sintering 、 Permittivity 、 Dielectric loss 、 Dielectric 、 Composite material 、 Electrical resistivity and conductivity 、 Grain size
摘要: Abstract Lead-free piezoelectrics are materials exhibiting great potential, particularly because of their extended strains under high fields. However, the reported electrical properties remain inconsistent due to difficulties related sample preparation. Here, we describe peculiarities synthesis procedure and influence on K 0.5 Bi TiO 3 ceramics. This is characterized by formation K- Bi-rich secondary phases a reaction with humidity, which has strong impact dielectric, ferroelectric piezoelectric properties. These very much improved after prolonged sintering, ascribed elimination hygroscopic 2 O-rich phase. reflected in higher resistivity, density grain size. The terms decrease dielectric losses, two-fold increase permittivity value at maximum, an remanent polarization 29 μC/cm , small signal d 33 from 40 120 pC/N.
elsevier.com
sci-hub.se 参考文章(34)
Ningzhong Bao, Xin Feng, Xiaohua Lu, Zhuhong Yang, Study on the formation and growth of potassium titanate whiskers Journal of Materials Science. ,vol. 37, pp. 3035- 3043 ,(2002) , 10.1023/A:1016085417990
Shan-Tao Zhang, Alain Brice Kounga, Emil Aulbach, Helmut Ehrenberg, Jürgen Rödel, Giant strain in lead-free piezoceramics Bi0.5Na0.5TiO3–BaTiO3–K0.5Na0.5NbO3 system Applied Physics Letters. ,vol. 91, pp. 112906- ,(2007) , 10.1063/1.2783200
Yuji Noguchi, Muneyasu Suzuki, Yuuki Kitanaka, Shunsuke Teranishi, Masaru Miyayama, Ferroelectric polarization and piezoelectric properties of layer-structured K0.5Bi4.5Ti4O15 single crystals Applied Physics Letters. ,vol. 93, pp. 032904- ,(2008) , 10.1063/1.2956397
Takahiro Wada, Kouji Toyoike, Yousuke Imanaka, Yoshihiro Matsuo, None, Dielectric and Piezoelectric Properties of (A0.5Bi0.5)TiO3–ANbO3 (A=Na, K) Systems Japanese Journal of Applied Physics. ,vol. 40, pp. 5703- 5705 ,(2001) , 10.1143/JJAP.40.5703
Yuji Hiruma, Rintaro Aoyagi, Hajime Nagata, Tadashi Takenaka, Ferroelectric and Piezoelectric Properties of (Bi1/2K1/2)TiO3 Ceramics Japanese Journal of Applied Physics. ,vol. 44, pp. 5040- 5044 ,(2005) , 10.1143/JJAP.44.5040
T. K. Song, M. H. Kim, Y. S. Sung, H. M. Lee, W. Du, H. G. Yeo, S. C. Lee, J. H. Cho, Enhanced piezoelectric properties of (Bi0.5K0.5+xLiy)TiO3 ceramics by K nonstoichiometry and Li addition Applied Physics Letters. ,vol. 94, pp. 062901- ,(2009) , 10.1063/1.3081018
S.H. Choy, X.X. Wang, C.P. Chong, H.L.W. Chan, P.C.K. Liu, C.L. Choy, 0.90(Bi1/2Na1/2)TiO3–0.05(Bi1/2K1/2)TiO3– 0.05BaTiO3 transducer for ultrasonic wirebonding applications Applied Physics A. ,vol. 84, pp. 313- 316 ,(2006) , 10.1007/S00339-006-3625-X
Elena Aksel, Jacob L. Jones, Advances in Lead-Free Piezoelectric Materials for Sensors and Actuators Sensors. ,vol. 10, pp. 1935- 1954 ,(2010) , 10.3390/S100301935
J. König, M. Spreitzer, B. Jančar, D. Suvorov, Z. Samardžija, A. Popovič, The thermal decomposition of K0.5Bi0.5TiO3 ceramics Journal of The European Ceramic Society. ,vol. 29, pp. 1695- 1701 ,(2009) , 10.1016/J.JEURCERAMSOC.2008.10.002
Eva-Maria Anton, Wook Jo, Dragan Damjanovic, Jürgen Rödel, Determination of depolarization temperature of (Bi1/2Na1/2)TiO3-based lead-free piezoceramics Journal of Applied Physics. ,vol. 110, pp. 094108- ,(2011) , 10.1063/1.3660253