Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Functional oxides"”.
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Nanoscale stress-induced conducting states in functional oxides
… of controlling nanoscale phase transitions and functionality, offers an alternate approach for direct injection and control of conducting interfaces. Moreover, with the advent of scanning probe microscopy (SPM), large magnitudes of stress can be applied in a highly localised manner via nanoscale …
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Crystal growth of functional oxides using an image furnace
… is concerned with the single crystal growth of functional oxides by the floating zone technique using a four mirror image furnace. This thesis attempts to extend our knowledge of the subject by firstly studying the optical floating zone method as a technique in terms of the experimental growth …
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Controlling properties of functional oxides by tuning oxygen defect chemistry
… are essential building blocks for properties and functionalities of oxides, including electrical conductivity, magnetism, ferroelectricity as well as catalytic and electrocatalytic activity. Therefore, fundamental understanding of how to tune the oxygen defect chemistry is essential for advancing …
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$^{17}$O Solid-State NMR Spectroscopy of Functional Oxides for Energy Conversion
… to study the local structure and ion dynamics of functional oxide materials for applications in energy conversion, in particular as electrodes and electrolytes in solid oxide fuel cells (SOFCs). Broadly, the work comprises two related areas: (1) application of a combined experimental and …
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The discovery of new functional oxides using combinatorial techniques and advanced data mining algorithms
… composition to those already characterised. The Functional Oxide Discovery project (FOXD) is a combinatorial materials discovery project combining high-throughput synthesis and characterisation with advanced data mining to develop novel materials. Dielectric ceramics are of interest for use in …
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Functional Oxides in Optical and Electronic Applications by Atmospheric Pressure Spatial Chemical Vapour Deposition
Oxide thin films possess a variety of electronic, optical, and magnetic properties, making them valuable in multiple fields, particularly in electronics and memory technology. These thin films are used in resistive random-access memory (RRAM) due to their ability to alter resistance states, which …
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External field effects on electronic and ionic defects in functional oxides: Experiments and simulations
… stimuli on electronic and ionic defects in functional oxides is the key to design next generation energy conversion/storage and memory devices. Mechanical strain and high electric fields are known to commonly exist in thin film functional oxides and significantly affect the electronic and …
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PVD Synthesis and Characterization of Functional Oxides for Transparent Electronics [Sintesi tramite metodi fisici da fase vapore (PVD) e Caratterizzazione di Ossidi Funzionali per Elettronica Trasparente]
Una porzione sempre più consistente di tecnologie innovative, diffuse capillarmente nella vita quotidiana di tutti noi, è basata su elementi trasparenti e conduttivi, detti anche elettrodi trasparenti. La capacità di questa vasta classe di materiali di combinare conducibilità elettrica e alta …
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Engineering Functional Defects in Oxides Using External Stimuli
… of materials often depend strongly on the functional defects of various dimensionalities, such as vacancies, interfaces, and precipitates. Therefore, defect engineering lies at the heart of materials innovations for the next-generation technologies. However, due to the enormous span in the …
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Atmospheric Pressure Chemical Vapor Deposition of Functional Oxide Materials for Crystalline Silicon Solar Cells
Functional oxides are versatile materials that can simultaneously enable efficiency gains and cost reductions in crystalline silicon (c-Si) solar cells. In this work, the deposition of functional oxide materials using atmospheric pressure chemical vapor deposition (APCVD) and the integration of …
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Density Functional Simulations of Defect Behavior in Oxides for Applications in MOSFET and Resistive Memory
Defects in the functional oxides play an important role in electronic devices like metal oxide semiconductor field effect transistors (MOSFETs) and resistive random-access memories (ReRAMs). The continuous scaling of CMOS has brought the Si MOSFET to its physical technology limit and the …
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The analysis of local structural effects in alloys using total scattering and reverse Monte Carlo techniques
… liquids, network glasses, nano-materials, functional oxides and metal organic frameworks. The work presented in this thesis focuses on the development of a new methodology for the analysis of local structural effects in metallic systems using total scattering, and the first systematic …
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Structure-property correlations in compositionally complex ferroelectrics
Compositional control in functional oxides can significantly alter material properties and lead to the emergence of unconventional behavior. Ferroelectrics with switchable polar ordering, for instance, are influenced by local compositional variation, thus requiring an understanding of …