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Large piezoresponse of lead-free Bi0.5(Na0.85K0.15)0.5TiO3 thin film |
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| Authors: | Chang Won AhnSung Sik Won Aman UllahSun Young Lee Su Dae LeeJi Hye Lee William JoIll Won Kim |
| Institution: | a Department of Physics and Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 680-749, Republic of Korea b Department of Physics, University of Science and Technology Bannu, KP, Pakistan c Department of Physics, Kyungnam University, Masan 630-701, Republic of Korea d Department of Physics, Ewha Womans University, Seoul 120-750, Republic of Korea |
| Abstract: | 0.85Bi0.5Na0.5TiO3-0.15Bi0.5K0.5TiO3 (BNKT15) lead-free thin films were prepared on Pt(111)/TiO2/SiO2/Si(100) substrates by the chemical solution deposition method. BNKT15 are MPB composition in the Bi0.5Na0.5TiO3-Bi0.5K0.5TiO3 (BNT-BKT) system. The maximum piezoelectric coefficient (d33,f) value of BNKT15 thin film is approximately 75 pm/V, which is comparable to that of polycrystalline PZT thin films. These results suggest that BNKT15 thin film can be used as an alternative for PZT films in piezoelectric micro-electromechanical systems. |
| Keywords: | Lead-free Ferroelectric Thin film Bismuth sodium titanate Piezoelectric |
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