| Autor: |
Wang Zhong Zhang, Bao Shan Li, Qing Rui Yin, Zhi Gang Zhu, Ai Li Ding, Guorong Li |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Key Engineering Materials. :201-204 |
| ISSN: |
1662-9795 |
| DOI: |
10.4028/www.scientific.net/kem.280-283.201 |
| Popis: |
This paper aims at the determination of the effects of strontium addition on the microstructural evolution and the piezoelectric properties for Pb(Mn1/3Nb2/3)O3-Pb(Zr,Ti)O3 (PMnN-PZT) ceramics. The Sr content was chosen in the range of 2-8 mol%. These materials were prepared by the solid phase reaction of the oxides. It was found, from the experimental results, the tetragonality of the PMnN-PZT lattice and the Curie temperature decreased with Sr content; in the meantime, dielectric constant increased greatly. Dielectric constant (er) and planar coupling factor (Kp) was proven to be dependent on sintering temperature. P-E curves of PMnN-PZT system exhibited some “pinched” shape instead of the normal square-like P-E loops, illustrating presence of the oxygen vacancies by reason of the preferable substitution of the B-sites ion. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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