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Showing 1 to 9 of 9 for “"ferroelectric thin film"”.
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Investigation of Ferroelectric Thin Film Using Piezoresponse Force Microscopy
Ferroelectric materials have found a wide range of applications in data storage devices, sensors and actuators, capacitors, oscillators and filters, among others thanks to fabrication methods that allow integration into semiconductor devices at micro and nanoscales. As many of these materials also …
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Reliability and processing of ferroelectric thin film capacitors with emphasis on fatigue and etching
Ferroelectric materials are characterized by a reversible spontaneous polarization in the absence of an electric field. The characteristic polarization response of a ferroelectric material to an applied electric field enables a binary state device in the form of a thin film ferroelectric capacitor …
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Degradation in lead zirconate titanate thin film capacitors for non-volatile memory applications
A study of the degradation of ferroelectric properties in Lead Zirconate Titanate (PZT) thin film capacitors is presented in this work. Metal- Ferroelectric - Metal capacitors were prepared by sputtering and metal organic decomposition (MOD) techniques. Samples with several different film …
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Microstructure and Electrical Properties of Mocvd-Derived Perovskite Lead Zirconium(x) Titanium(1-X) Oxygen(3) and Lead (Scandium Tantalum)(1-X) Titanium(x) Oxygen(3) Thin Films on Lanthanum Nickel Oxide Electrode-Buffered Silicon
… the experience accumulated from growing PZT thin films, we expanded the work to grow relaxor ferroelectric thin films. Solid solutions of Pb(Sc1/2Ta1/2)1-xTixO 3 (x = 0--0.3) (PSTT) were grown. Phase evolution of the PSTT thin films with respect to the growth conditions, including growth …
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Photovoltaic Properties of Ferroelectric Thin Films
This project seeks to evaluate ferroelectric thin film materials in term of their photovoltaic properties. The ferroelectric thin films with strong photovoltaic effects are deposited on silicon substrate; hence it opens a new window for integration towards opto-electronic application. The effects …
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Competition and Coexistence of Screening Mechanisms in Ferroelectric Thin Films and Superlattices
… mechanisms that screen the depolarising field in ferroelectric materials, namely domains and two-dimensional electron gases. A more realistic electrostatic description of thin films, which accounts for the presence of a substrate has been derived. The electrostatic description of superlattices of …
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Sputtered (Bax, Sr1-x)TiO3, BST, Thin Films on Flexible Copper Foils for Use as a Non-Linear Dielectric
Ferroelectric thin film dielectrics have a non-linear DC bias dependent permittivity. Ferroelectric thin film can be used as the dielectric between metal electrodes to make tunable Metal-Insulator-Metal (MIM) capacitors. Varactors can be used to change the resonance frequency of a circuit allowing …
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Integration of ferroelectric thin films into silicon based microsystems
The integration of ferroelectric materials will enhance the functionality of conventional microsystems. The converse piezoelectric effect can be used for the fabrication of integrated actuators, which will help to realize integrated high frequency switches. The aim of this thesis is the integration …
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Deposition and characterisation of bismuth layer-structured ferroelectric films
Bismuth layer-structured ferroelectrics have been recognised as promising film materials for ferroelectric random access memory application due to their excellent fatigue resistance and other electrical properties. This work deals with the deposition and characterisation of epitaxial and …