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Unusual piezoresponse behavior across the grain boundary of PbMg1/3Nb2/3O3-0.33PbTiO3 thin films |
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| Authors: | X Leng HR Zeng XM LiY He KY ZhaoW Wang |
| Institution: | a State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China b Graduate School of Chinese Academy of Science, Beijing 100039, China c Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Science, 1295 Dingxi Road, Shanghai 200050, China |
| Abstract: | Ferroelectric PbMg1/3Nb2/3O3-0.33PbTiO3 (PMN-0.33PT) polycrystalline thin film near MPB was grown on Ir with LaNiO3 buffer layer by pulsed laser deposition technology. Piezoresponse force microscopy (PFM) was employed to investigate the role of grain boundary on the domains formation and their local physical properties in PMN-PT thin film. Unusual piezoresponse behaviors were firstly observed across the grain boundary of PMN-PT thin film via PFM. Such abnormal phenomenon is ascribed to the structural incompatibility-induced local stress across the grain boundary, which gives a deep influence on the local imprint behavior of PMN-PT thin film. |
| Keywords: | PbMg1/3Nb2/3O3-PbTiO3 (PMN-PT) thin film Ferroelectric domains Grain boundary Piezoresponse force microscopy (PFM) |
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