Film Thickness Dependence of Electrical Properties for Pb(Zr,Ti)O3 Thin Films Prepared on (111)Ir/TiO2/SiO2/Si and (111)Pt/TiO2/SiO2/Si Substrates by Pulsed-Metalorganic Chemical Vapor Deposition

Polycrystalline Pb(Zr,Ti)O3 (PZT) films with various film thicknesses were deposited on (111)Ir/TiO2/SiO2/Si and (111)Pt/TiO2/SiO2/Si substrates at 540 deg C by source-gas-pulsed metalorganic chemical vapor deposition (pulsed-MOCVD). PZT films deposited on (111)Ir/TiO2/Si2/Si substrates showed good...

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Published inIntegrated ferroelectrics Vol. 59; pp. 1421 - 1428
Main Authors Oikawa, T, Funakubo, H, Morioka, H, Saito, K
Format Journal Article
LanguageEnglish
Published 01.01.2003
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ISSN1058-4587
DOI10.1080/10584580390259867

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Abstract Polycrystalline Pb(Zr,Ti)O3 (PZT) films with various film thicknesses were deposited on (111)Ir/TiO2/SiO2/Si and (111)Pt/TiO2/SiO2/Si substrates at 540 deg C by source-gas-pulsed metalorganic chemical vapor deposition (pulsed-MOCVD). PZT films deposited on (111)Ir/TiO2/Si2/Si substrates showed good surface flatness and lower leakage current density. The rate of the decrease of remanent polarization (Pr) and the rate of increase of coercive field (Ec) for the films with decreasing the film thickness smaller on (111)Ir/TiO2/SiO2/Si substrates than those of (111)Pt/TiO2/SiO2/Si substrates. In addition, Pr and Ec values saturated at low voltage when the film thickness was the same. As a result, good ferroelectricity with Pr and Ec values of 40 micro C/sq cm and 140 kV/cm were obtained for 35 nm-thick films prepared on (111)Ir/TiO2/SiO2/Si substrates by pulsed-MOCVD.
AbstractList Polycrystalline Pb(Zr,Ti)O3 (PZT) films with various film thicknesses were deposited on (111)Ir/TiO2/SiO2/Si and (111)Pt/TiO2/SiO2/Si substrates at 540 deg C by source-gas-pulsed metalorganic chemical vapor deposition (pulsed-MOCVD). PZT films deposited on (111)Ir/TiO2/Si2/Si substrates showed good surface flatness and lower leakage current density. The rate of the decrease of remanent polarization (Pr) and the rate of increase of coercive field (Ec) for the films with decreasing the film thickness smaller on (111)Ir/TiO2/SiO2/Si substrates than those of (111)Pt/TiO2/SiO2/Si substrates. In addition, Pr and Ec values saturated at low voltage when the film thickness was the same. As a result, good ferroelectricity with Pr and Ec values of 40 micro C/sq cm and 140 kV/cm were obtained for 35 nm-thick films prepared on (111)Ir/TiO2/SiO2/Si substrates by pulsed-MOCVD.
Polycrystalline Pb(Zr,Ti)O3 (PZT) films with various film thicknesses were deposited on (111)Ir/TiO2/SiO2/Si and (111)Pt/TiO2/SiO2/Si substrates at 540 deg C by source-gas-pulsed metalorganic chemical vapor deposition (pulsed-MOCVD). PZT films deposited on (111)Ir/TiO2/SiO/Si substrates showed good surface flatness and lower leakage current density. The rate of the decrease of remanent polarization (Pr) and the rate of increase of coercive field (Ec) for the films with decreasing the film thickness smaller on (111)Ir/TiO2 /SiO2/Si substrates than those of (111)Pt/TiO2/SiO2/Si substrates. In addition, Pr and Ec values saturated at low voltage when the film thickness was the same. As a result, good ferroelectricity with Pr and Ec values of 40 *mC/cm2 and 140 kV/cm were obtained for 35 nm-thick films prepared on (111)Ir/TiO2/SiO2/Si substrates by pulsed-MOCVD.
Author Saito, K
Morioka, H
Oikawa, T
Funakubo, H
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