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(Na0.52K0.44Li0.04)Nb0.9-xSbxTa0.1O3 Lead-Free Piezoelectric Ceramics with High Performance and High Curie Temperature |
| DU Juan1;WANG Jin-Feng1;ZANG Guo-Zhong1;QI Peng1;ZHANG Shu-Jun2;Thomas R. Shrout2 |
| 1School of Physics and Microelectronics, State Key laboratory of Crystal Materials, Shandong University, Jinan 2501002Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA |
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| Cite this article: |
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DU Juan, WANG Jin-Feng, ZANG Guo-Zhong et al 2008 Chin. Phys. Lett. 25 1446-1448 |
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Abstract (Na0.52K0.44Li0.04)Nb0.9-xSbxTa0.1O3 lead-free piezoelectric ceramics are prepared by a solid-state reaction method. With increasing Sb content, the transition temperature from orthorhombic to tetragonal polymorphic phase decreased. A composition (Na0.52K0.44Li0.04)Nb0.863Sb0.037Ta0.1O3 is found to possess excellent piezoelectric and electromechanical performances (d33=306pC/N, kp=48%, and kt=50%), and high Curie temperature (TC=320°C). These results indicate that (Na0.52K0.44Li0.04)Nb0.863Sb0.037Ta0.1O3 is a promising lead-free piezoceramics replacement for lead zirconate titanate.
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| Keywords:
77.84.-s
77.84.Dy
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Received: 05 November 2007
Published: 31 March 2008
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| PACS: |
77.84.-s
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(Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)
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77.84.Dy
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