The integrated ferroelectric/semiconductor systems, Pb(Zr0.53Ti0.47)O-3 (PZT)/SiO2/Si have been prepared and investigated. It was found that an asymmetry related to the conduction type of the substrate (Si) and the polarization direction of PZT exists in the polarization-voltage loops of the integrated system. According to the configuration and the characteristic of the integrated structure, we suggest that the space charge layer in Si and the tunneling process between Si and PZT during the polarization are the main causes for this asymmetry. (C) 1999 American Institute of Physics. [SS0021-8979(99)07420-4].
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Univ La Habana, Fac Fis, Havana 10400, Cuba
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, MexicoUniv La Habana, Fac Fis, Havana 10400, Cuba
Portelles, J.
Fuentes, J.
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Univ La Habana, Fac Fis, Havana 10400, Cuba
Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, MexicoUniv La Habana, Fac Fis, Havana 10400, Cuba
Fuentes, J.
Durruthy-Rodriguez, M. D.
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Inst Cibernet Matemat & Fis, Dept Fis Aplicada, Havana 10400, CubaUniv La Habana, Fac Fis, Havana 10400, Cuba
Durruthy-Rodriguez, M. D.
Duarte, A.
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Univ La Habana, Fac Fis, Havana 10400, CubaUniv La Habana, Fac Fis, Havana 10400, Cuba
Duarte, A.
Raymond, O.
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Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, MexicoUniv La Habana, Fac Fis, Havana 10400, Cuba
Raymond, O.
Heiras, J.
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Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, MexicoUniv La Habana, Fac Fis, Havana 10400, Cuba
Heiras, J.
Cruz, M. P.
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Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, MexicoUniv La Habana, Fac Fis, Havana 10400, Cuba
Cruz, M. P.
Siqueiros, J. M.
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Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, MexicoUniv La Habana, Fac Fis, Havana 10400, Cuba