Effects of Interfacial Polarization on Voltage Tunability of Pb(Fe1/2Nb1/2)1-xTixO3 Single Crystals
LIU Kui1, ZHANG Xin-Yi1, XIAO Jing-Zhong 1,2
1Surface Physics Laboratory (State Key Laboratory), Synchrotron Radiation Research Center, and Department of Physics of Fudan University, Shanghai 2004332International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016
Effects of Interfacial Polarization on Voltage Tunability of Pb(Fe1/2Nb1/2)1-xTixO3 Single Crystals
LIU Kui1, ZHANG Xin-Yi1, XIAO Jing-Zhong 1,2
1Surface Physics Laboratory (State Key Laboratory), Synchrotron Radiation Research Center, and Department of Physics of Fudan University, Shanghai 2004332International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016
摘要The voltage tunability of Pb(Fe1/2Nb1/2)1-xTixO3 single crystals is investigated at a low electric field (<130 V/cm) in a low frequency range (<1 MHz). The results show that the capacitance is strongly suppressed by the applied dc biases for both the rhombohedral sample and the tetragonal sample. A negative voltage tunability is only detected in the tetragonal sample. The origin of the giant tunability and the negative tunability is discussed based on the multipolarization-mechanism model and the equivalent circuit model, respectively. It is ascribed to the interfacial polarization at the interface of electrode/sample.
Abstract：The voltage tunability of Pb(Fe1/2Nb1/2)1-xTixO3 single crystals is investigated at a low electric field (<130 V/cm) in a low frequency range (<1 MHz). The results show that the capacitance is strongly suppressed by the applied dc biases for both the rhombohedral sample and the tetragonal sample. A negative voltage tunability is only detected in the tetragonal sample. The origin of the giant tunability and the negative tunability is discussed based on the multipolarization-mechanism model and the equivalent circuit model, respectively. It is ascribed to the interfacial polarization at the interface of electrode/sample.
(Other topics in dielectrics, piezoelectrics, and ferroelectrics and their properties)
引用本文:
LIU Kui;ZHANG Xin-Yi;XIAO Jing-Zhong;. Effects of Interfacial Polarization on Voltage Tunability of Pb(Fe1/2Nb1/2)1-xTixO3 Single Crystals[J]. 中国物理快报, 2009, 26(10): 107701-107701.
LIU Kui, ZHANG Xin-Yi, XIAO Jing-Zhong,. Effects of Interfacial Polarization on Voltage Tunability of Pb(Fe1/2Nb1/2)1-xTixO3 Single Crystals. Chin. Phys. Lett., 2009, 26(10): 107701-107701.
[1] Park Y 2000 Solid State Commun. 113 379 [2] Wedantam R R, Subramanian V, Sivasubramanian V and MurthyV R K 2004 Mater. Sci. Engin. B 113 136 [3] Majumder S B et al 2006 J. Appl. Phys. 99024108 [4] Smolenskii G S et al 1958 Sov. Phys. Tech. Phys. 28 2152 [5] Raymond O et al 2005 J. Appl. Phys. 97 084107 [6] Vokov V A et al 1962 Sov. Phys. JETP 15 447 [7] Singh S P, Singh A K and Pandey D 2007 J. Phys:Condense Matter 19 036217 [8] Singh S P, Singh A K and Pandey D 2005 Ferroelectrics 324 49 [9] Sai Sunder V V S S and Umarji A M 1995 Mater. Res.Bull. 30 427 [10] Li C H et al 2008 Appl. Phys. Lett. 92 182903 [11] Wang C C et al 2007 Appl. Phys. Lett. 90192904 [12] Liu G Z et al 2008 Appl. Phys. Lett. 92122903 [13] Bi\v{skup N, de Andr\'{es A, Martinez J L and Perca C2005 Phys. Rev. B 72 024115 [14] Gao Y Q, Xu H Q, Wu Y J, He T H, Xu B S and Luo H S 2001 Jpn. J. Appl. Phys. 40 4998 [15] Ortega N, Kumar A, Bhattacharya P, Majumder S B andKatiyar R S 2008 Phys. Rev. B 77 014111 [16] Li W and Schwartz R W 2007 Phys. Rev. B 75012104 [17] Ang C and Yu Z 2004 Phys. Rev. B 69 174109 [18] Lunkenheimer P, Bobnar V, Pronin A V, Ritus A I, Volkov AA and Loidl A 2002 Phys. Rev. B 66 052105 [19] Hu X, Chen X M and Wang T 2005 J. Electroceram. 15 223
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