Investigation of dielectric and piezoelectric properties in aliovalent Eu3+-modified Pb(Mg1/3Nb2/3)O3-PbTiO3 ceramics |
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| Authors: | Qinghu Guo Lintao Hou Fei Li Fangquan Xia Pengbin Wang Hua Hao Huajun Sun Hanxing Liu Shujun Zhang |
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| Affiliation: | 1. State Key Laboratory Silicate Materials for Architecture, Center for Smart Materials and Device Integration, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China;2. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi'an Jiaotong University, Xi'an, China;3. School of Chemistry and Chemical Engineering, University of Jinan, Jinan, China;4. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Center for Smart Materials and Device Integration, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, China;5. Institute for Superconducting and Electronic Materials, Australian Institute of Innovative Materials, University of Wollongong, Wollongong, NSW, Australia |
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| Abstract: | Rare earth (Eu3+)-modified Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) polycrystalline ferroelectric ceramics were fabricated by high-temperature solid-state sintering, the phase structure, dielectric and piezoelectric properties were investigated. Eu3+ addition was found to significantly improve dielectric and piezoelectric properties of PMN-PT, where the optimized properties were achieved for the composition of 2.5 mol%Eu: 0.72PMN-0.28PT, with the piezoelectric d33 = 1420 pC/N, dielectric εr = 12 200 and electromechanical k33 = 0.78, respectively. All these results indicate that the Eu3+-doped PMN-PT ceramics are promising candidates for high-performance room-temperature piezoelectric devices. |
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| Keywords: | dielectric properties electromechanical properties piezoelectric properties |
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