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Nakajima, Takashi
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Nakajima, Takashi
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Nakajima, Takashi
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論文 |
Kawae, Takeshi ; Teraguchi, Yuki ; Nakajima, Takashi ; Okamura, Soichiro ; Morimoto, Akiharu
概要:
金沢大学理工研究域電子情報学系<br />Pr and Mn co-substituted BiFeO3 (BFO) thin films were fabricated on a Pt-coated (100) SrTiO3 substr
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ates by pulsed laser deposition (PLD) method. X-ray diffraction patterns indicated that the formation of impurity phases was suppressed by Pr substitution in the BFO thin films. Furthermore, by combining with small amount of Mn substitution, Pr substitution was effective for reducing the leakage current density. The polarization vs electric field curves showed well-saturated hysteresis loops with measurement frequency of 20 kHz at room temperature. The remnant polarization at a maximum electric field of 1500 kV/cm was approximately 50–70 µC/cm2.
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5.
論文 |
Liu, Chen ; Kawae, Takeshi ; Tsukada, Yoshinori ; Morimoto, Akiharu ; Naganuma, Hiroshi ; Nakajima, Takashi ; Okamura, Shoichiro ; 森本, 章治
概要:
金沢大学理工研究域電子情報通信学系<br />We report the preparation of (Bi,Pr)(Fe,Mn)O 3(BPFM)/SrRuO 3 (SRO)-Pt/CoFe 2O 4(CFO) layered film
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structure on (100) SrTiO 3 substrate by pulsed laser deposition method and their structural and electrical properties. Favorable ferroelectric properties of BPFM were observed in the layered film structure with (100)-oriented growth of BPFM, SRO, and CFO. Variation of polarization vs electric field loops of BPFM by applying DC magnet field was observed, and the remnant polarization was found to increase by 3% with increasing the applied magnetic field from 0 to 10 kOe. The magnetoelectric coefficient in the present structure was estimated to be 1.5 V/(cmOe). © 2012 American Institute of Physics.
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