Phase Transformation and Tunable Piezoelectric Properties of Lead-Free (Na0.52K0.48−xLix)(Nb1−x−ySbyTax)O3 System |
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| Authors: | Ruzhong Zuo Jian Fu Danya Lv |
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| Affiliation: | Institute of Electro Ceramics and Devices, School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | Lead-free (Na0.52K0.48? x )(Nb1? x ? y Sb y )O3- x LiTaO3 (NKNS–LT) piezoelectric ceramics have been fabricated by ordinary sintering. A special attention was paid to the composition design through which the dielectric and piezoelectric properties of the (Li, Ta, Sb) modified NKN systems were significantly promoted. A property spectrum was generated with a particular discussion on the relationship between the Sb content, the LT content, the polymorphic phase transition, and the electrical properties and their temperature stability. Excellent and tunable electrical properties of d 33=242–400 pC/N, k p=36%–54%,  , and T c=230°–430°C demonstrate a tremendous potential of the compositions studied for device applications. |
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