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Philosophical Magazine Volume 90, 2010 - Issue 13
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Original Articles

Anomalous conductivity in PZT thin film deposited on copper substrate electrode

Andrei Th. Ionescu Facultatea de Fizica, Universitatea din Bucuresti, P.O.B MG-11, Ro-077125 Bucharest, Romania
,
Anca-Luiza Alexe-Ionescu Departamentul de Fizica, Universitatea ‘Politehnica’ din Bucuresti, Splaiul Independentei 313, Ro-060042 Bucharest, Romania
,
Salvatore Marino INFM–CNR–LICRYL Laboratory, CEMIF.CAL, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33B, 87036 Rende (CS), Italy
,
Marco Castriota INFM–CNR–LICRYL Laboratory, CEMIF.CAL, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33B, 87036 Rende (CS), Italy
,
Giuseppe Strangi INFM–CNR–LICRYL Laboratory, CEMIF.CAL, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33B, 87036 Rende (CS), Italy
,
Gaetano Nicastro INFM–CNR–LICRYL Laboratory, CEMIF.CAL, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33B, 87036 Rende (CS), Italy
&
Nicola Scaramuzza INFM–CNR–LICRYL Laboratory, CEMIF.CAL, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33B, 87036 Rende (CS), ItalyCorrespondence[email protected]
 show all
Pages 1733-1742 | Received 08 Jul 2009, Accepted 04 Nov 2009, Published online: 20 Apr 2010
 
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Abstract

Electrical properties of ferroelectric films are influenced by factors that include methods of synthesis and characteristics of the substrate electrode. Conductivity measurements were performed on PZT (lead zirconate titanate) thin films deposited by sol–gel synthesis on a copper electrode to investigate electric properties and isolate the principal charge carriers. A semiconducting PZT/Cu interface appears during thermal treatment, significantly influencing electric conduction. A power law, describing the transport mechanism across the PZT film, was found empirically.

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