Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality

Bibliographic Details
Main Author:	Herderick, Edward David
Language:	English
Published:	The Ohio State University / OhioLINK 2009
Subjects:	Materials Science Nanowires functional oxides ferroelectric piezoelectric AFM PFM hydrothermal synthesis titanium oxide barium titanate lead titanate
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=osu1250257990

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spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-osu12502579902021-08-03T05:56:50Z Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality Herderick, Edward David Materials Science Nanowires functional oxides ferroelectric piezoelectric AFM PFM hydrothermal synthesis titanium oxide barium titanate lead titanate <p>A new “bottom-up” paradigm of electronics offers the possibility of assemblingvirtually any electronic device using nanoscale building blocks to provide functionality.Essential to this vision is the synthesis of such building blocks with customized composition, morphology, and properties in a reproducible, controlled manner.</p><p>In the case of functional oxides, extensive studies have been carried out synthesizingall-oxide nanowires that are assembled across metal contact-pad electrodes to createdevices. However, there are drawbacks to this approach including: high ohmic losses;the active oxide region is determined by spacing of the electrodes; the contacts made tothe functional segment are on the side-wall of the nanowire; and making reproduciblecontacts over a range of devices is difficult.</p><p>In this context, metal-oxide-metal (MOM) heterojunction nanowires, where twoAu nanowires are separated by a nanoscale segment of a functional oxide, offer severaladvantages over all-oxide nanowires. The MOM nanowire structure precisely defines theactive oxide region within the building block itself and the metal interconnects are integrated within the building block making them more suitable for device assembly. In addition, the small interfacial area of the metal interconnects to the oxide offer the possibility of measuring coupled electronic properties of nanoscale volumes of oxides without substrate effects.</p><p>In this work, a novel method is developed to synthesize Au-TiO<sub>2</sub>-Au, Au-BaTiO<sub>3</sub>-Au and Au-PbTiO<sub>3</sub>-Au MOM heterojunction nanowires. This is the first report of successful synthesis of MOM nanowires with ternary oxides. Results from the synthesis and characterization of these nanowires are presented.</p><p>In order to measure properties of these nanowires, single-nanowire-based devicesare fabricated using the focused ion beam (FIB) direct write method to make connectionsto macroscale electrode pads. The charge transport properties are measured and show anon-linear, non-rectifying response. This response is shown to be due to a transition between ohmic and space-charge-limited-conduction (SCLC) and is investigated using Au-NiO-Au nanowires as a model system. In the Au-BaTiO<sub>3</sub>-Au and Au-PbTiO<sub>3</sub>-Au nanowire system, ferroelectric polarization measurements are performed using both electrical measurements and a scanning probe microscope approach.</p> 2009-09-24 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1250257990 http://rave.ohiolink.edu/etdc/view?acc_num=osu1250257990 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Materials Science Nanowires functional oxides ferroelectric piezoelectric AFM PFM hydrothermal synthesis titanium oxide barium titanate lead titanate
spellingShingle	Materials Science Nanowires functional oxides ferroelectric piezoelectric AFM PFM hydrothermal synthesis titanium oxide barium titanate lead titanate Herderick, Edward David Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality
author	Herderick, Edward David
author_facet	Herderick, Edward David
author_sort	Herderick, Edward David
title	Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality
title_short	Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality
title_full	Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality
title_fullStr	Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality
title_full_unstemmed	Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality
title_sort	synthesis, characterization, and property measurement of novel metal-oxide-metal heterojunction nanowires with ferroelectric functionality
publisher	The Ohio State University / OhioLINK
publishDate	2009
url	http://rave.ohiolink.edu/etdc/view?acc_num=osu1250257990
work_keys_str_mv	AT herderickedwarddavid synthesischaracterizationandpropertymeasurementofnovelmetaloxidemetalheterojunctionnanowireswithferroelectricfunctionality
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Synthesis, Characterization, and Property Measurement of Novel Metal-Oxide-Metal Heterojunction Nanowires with Ferroelectric Functionality

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