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Large Piezoelectric Coefficient in Tb-Doped BiFeO3 Films

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Polycrystalline BiFeO3 and Bi1−xTbxFeO3 (BTFO) (x=0.05–0.16) thin films were deposited on indium tin oxide/glass substrates via a metal organic deposition method. The influence of Tb doping content on the structure and multiferroic properties was investigated. X-ray diffraction results reveal that there may exist a structure transition around x=0.11 in the BTFO system. Well-saturated and rectangular P–E hysteresis loops can be observed in all BTFO films. The BTFOx=0.11 film exhibits the maximum values of the remanent out-of-plane piezoelectric coefficient (d33=140 pm/V) and saturated magnetization (Ms=22.2 emu/cm3).

Document Type: Research Article


Affiliations: 1: School of Materials Science and Engineering, University of Jinan, Jinan 250022, China 2: College of Materials Science and Engineering, Shangdong Jianzhu University, Jinan 250101, China

Publication date: April 1, 2010

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