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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.118  No.1380 (August) (2010)  >  pp.656-658

Journal of the Ceramic Society of Japan
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Evaluation of ferroelectric hysteresis loops of leaky multiferroic BiFeO3 films using a system with a high driving frequency of 100 kHz system

Hiroshi NAGANUMA1), Yosuke INOUE1) and Soichiro OKAMURA1)
1) Department of Applied Physics, Faculty of Science, Tokyo University of Science

  A measurement system with a high driving frequency of 100 kHz is effective for measuring the ferroelectricity of leaky ferroelectric materials such as multiferroic BiFeO3 films. A high driving frequency reduces the measurement time, leading to a drastic reduction in the influence of the leakage current density on ferroelectric hysteresis loops. Phase-delay compensation is essential in a system with a driving frequency of 100 kHz; in this study a standard capacitor was used for phase-delay compensation. The value of remanent polarization of a BiFeO3 film measured by the 100-kHz system was confirmed by a positive, up, negative and down measurement.

Multiferroic BiFeO3, Ferroelectricity, High frequency system, Leakage current, 100 kHz

Received: April 12, 2010
Accepted: June 17, 2010 , Published online: August 01, 2010
Copyright (c) 2010 The Ceramic Society of Japan



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