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Large Piezoelectricity and Ferroelectricity in Mn‐Doped (Bi0.5Na0.5)TiO3‐BaTiO3 Thin Film Prepared by Pulsed Laser Deposition |
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| Authors: | Qianru Lin Rui Ding Qian Li Yee Yan Tay Danyang Wang Yun Liu Yizhong Huang Sean Li |
| Affiliation: | 1. School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW, Australia;2. Research School of Chemistry, The Australian National University, Canberra, ACT, Australia;3. Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore;4. School of Materials Science and Engineering, Nanyang Technological University, Singapore |
| Abstract: | Mn‐doped (Bi0.5Na0.5)0.94Ba0.06TiO3 (MnBNBT) thin films were prepared on SrRuO3 (SRO)‐coated (001) SrTiO3 (STO) single crystal substrates by pulsed laser deposition under different processing conditions. Structural characterization (i.e., XRD and TEM) confirms the epitaxial growth of STO/SRO/MnBNBT heterostructures. Through the judicious control of deposition temperature, the defect level within the films can be finely tuned. The MnBNBT thin film deposited at the optimized temperature exhibits superior ferroelectric and piezoelectric responses with remanent polarization Pr of 33.0 μC/cm2 and piezoelectric coefficient d33 of 120.0 ± 20 pm/V. |
| Keywords: | bismuth titanates thin films dopants/doping ferroelectricity/ferroelectric materials piezoelectric materials/properties |