Characteristics of Undoped and Mn-Doped BiFeO3 Films Formed on Pt and SrRuO3/Pt Electrodes by Radio-Frequency Sputtering
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概要
- 論文の詳細を見る
Pure BiFeO3 (BFO) and Mn-doped BiFeO3 (BFMO) films were deposited at 550 °C on Pt(111) and SrRuO3(SRO)/Pt(111) bottom electrodes using radio-frequency (RF) sputtering. Mn doping of 5 at. % into BFO films was effective in reducing leakage current density at a high electric field. In polarization versus electric field ($P$–$E$) measurement at 100 kHz, square hysteresis loops were obtained at room temperature in both BFO and BFMO films on Pt and SRO/Pt electrodes. In the BFMO films, the frequency dependence of the remanent polarization was not pronounced, even when the measurement frequency was decreased to 5 kHz. In the BFO film, on the other hand, no accurate hysteresis loops could be measured at a frequency below 10 kHz, because of the large leakage current.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2009-09-25
著者
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Ishiwara Hiroshi
Interdisciplinary Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Funakubo Hiroshi
Interdisciplinary Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Kim Jeong
Interdisciplinary Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Kim Jeong
Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
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Funakubo Hiroshi
Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
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Sugiyama Yoshihiro
Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
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