Structural and piezoelectric properties of <001> textured PZT‐PZNN piezoelectric ceramics |
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| Authors: | Tae‐Gon Lee Ho‐Jun Lee Su‐jin Park Tae‐Ho Lee Dae‐hyeon Kim Chang‐Hyo Hong HaiBo Xu Chong‐Yun Kang Sahn Nahm |
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| Affiliation: | 1. Department of Nano Bio Information Technology, KU‐KIST Graduate School of Converging Science and Technology, Korea University, Seongbuk‐gu, Seoul, Korea;2. Department of Materials Science and Engineering, Korea University, Seongbuk‐gu, Seoul, Korea;3. School of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan, Korea;4. Electronic Materials Center, Korea Institute of Science and Technology, Seongbuk‐gu, Seoul, Korea |
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| Abstract: | Rhombohedral 0.69Pb(Zr0.47Ti0.53)‐0.31Pb(Zn0.6Ni0.4)NbO3 (PZT‐PZNN) ceramics were textured using 10.0 vol. % BaTiO3 (BT) platelets along the <001> direction at 950°C with a high Lotgering factor of 95.3%. BT platelets did not react with the PZT‐PZNN ceramics, and the textured PZT‐PZNN ceramic had a tetragonal structure. The PZT‐PZNN ceramics exhibited a strain of 0.174% with a piezoelectric strain constant (d*33) of 580 pC/N at 3.0 kV/mm. The textured PZT‐PZNN ceramic showed an increased strain of 0.276% and d*33 of 920 pC/N at 3.0 kV/mm, which can be explained by the domain rotation. However, the d33 values of the textured specimens are smaller than those of the untextured specimens because of the small remanent polarization and relative dielectric constant of BT platelets. The textured PZT‐PZNN ceramic synthesized in this work can be used for piezoelectric multilayer actuators because of its large strain and low sintering temperature. |
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| Keywords: | piezoelectric materials/properties seeding strain texture |
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