Sol-gel processing, perovskite phase development and properties of relaxor-based thin layer ferroelectrics

This thesis reports on the preparation and properties of thin layer ceramics in the Pb ((Zn$\sb{1/3}$Nb$\sb{2/3})\sb{\rm 1-x}$Ti$\sb{\rm x}$) O$\sb3$ (PZNT) and Pb ((Mg$\sb{1/3}$Nb$\sb{2/3})\sb{\rm 1-x}$Ti$\sb{\rm x}$) O$\sb3$ (PMNT) systems for capacitor and ferroelectric applications. Sol-gel methods were used to prepare thin layers by spin-casting partially hydrolysed alkoxide-based solutions on platinized Si substrates. As-deposited layers were amorphous, and formed a nonferroelectric pyrochlore phase or a ferroelectric perovskite phase, depending on the processing route. Since the perovskite structure is required for ferroelectric properties, the phase development and processing methods for perovskite formation were investigated in detail for thin layers and powders.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Materials Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Francis, Lorraine Falter

Contributors dc:contributor

• Payne, David A.

• Engineering, Materials Science

Statement dc:rights

• Copyright 1991 Francis, Lorraine Falter

Language dc:language

eng

Identifier

AAI9124413
(UMI)AAI9124413

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/21451