Ferroelectric Properties of Bi4-xYbxTi3O12 Thin Films

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Yb-doped bismuth titanate and random oriented Bi4-xYbxTi3O12 (BYbT) thin films were fabricated on Pt/Ti/SiO2/Si substrate with pulsed laser deposition method. The structures and ferroelectric properties of the BYbT films were investigated. Yb doping resulted in a marked improvement in remanent polarization (Pr) and coercive field (Ec). At an applied electric field of 120kV/cm, the Pr and (Ec) of the BYbT (x=0.8) films annealed at 650°C were 20 μC/cm2 and 85 KV/cm, respectively.

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216-219

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November 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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