| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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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 |
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| Cite this article: |
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LIU Kui, ZHANG Xin-Yi, XIAO Jing-Zhong 2009 Chin. Phys. Lett. 26 107701 |
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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.
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| Keywords:
77.22.-d
77.84.Dy
77.84.Lf
77.90.+k
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Received: 09 March 2009
Published: 27 September 2009
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| PACS: |
77.22.-d
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(Dielectric properties of solids and liquids)
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77.84.Dy
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77.84.Lf
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(Composite materials)
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77.90.+k
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(Other topics in dielectrics, piezoelectrics, and ferroelectrics and their properties)
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[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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