The self-polarization effect in Pb(Zr0.50Ti0.50)O-3 thin films with no preferential orientation

Autor(es)

Lima, E. C. ^[1] ; Araujo, E. B. ^[1] ; Bdikin, I. K. ^{[2, 3]} ; Kholkin, A. L. ^{[4, 5]}

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Dept Fis & Quim, Fac Engn Ilha Solteira, BR-15385000 Ilha Solteira, SP - Brazil

^[2] Univ Aveiro, Dept Mech Engn, P-3810193 Aveiro - Portugal

^[3] Univ Aveiro, TEMA, P-3810193 Aveiro - Portugal

^[4] Univ Aveiro, CICECO, P-3810193 Aveiro - Portugal

^[5] Univ Aveiro, Dept Mat & Ceram, P-3810193 Aveiro - Portugal

• Tipo de documento: Artigo Científico
• Fonte: Materials Research Bulletin; v. 47, n. 11, p. 3548-3551, NOV 2012.
• Citações Web of Science: 13

Resumo

This work demonstrates the existence of a self-polarization effect in Pb(Zr0.50Ti0.50)O-3 thin films with no preferential orientation. Piezoresponse Force Microscopy (PFM) and dielectric measurements were used to study the origin of this effect. The presence of only one peak shifting slightly to the negative side in the piezoresponse histogram indicates the existence of a self-polarization effect in the studied films. An increase in self-polarization was observed when the film thickness increases from 200 nm to 710 nm. The results suggest that Schottky barriers and/or mechanical coupling near the film-electrode interface are not the main mechanisms responsible for the self-polarization effect in the studied films. (c) 2012 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 07/08534-3 - Síntese e caracterização de filmes ultrafinos de PZT
• Beneficiário: Elton Carvalho de Lima
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 10/16504-0 - Influência de fatores extrínsecos sobre as propriedades de filmes ultrafinos de PZT
• Beneficiário: Eudes Borges de Araújo
• Modalidade de apoio: Auxílio à Pesquisa - Regular