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Dissertations / Theses on the topic 'Physical properties of barium oxide'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Rehspringer, Jean-Luc. "Preparation de titanate de baryum pour ceramiques multicouches." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13014.

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Batio::(3) est le principal oxyde utilise pour les condensateurs ceramiques multicouches en raison de la valeur elevee de sa constante dielectrique. On expose trois methodes de preparation d'un precurseur: precipitation d'un sel double de titane et de baryum; cohydrolyse d'une solution d'alcoxyde de baryum et de titane (procede sol-gel); polycondensation d'un alcoxyde de titane et d'un carboxylate de baryum (procede carboxy-alcoxy). On etudie les transformations precurseur-cristal, ainsi que les caracteristiques structurales et dielectriques des ceramiques elaborees a partir des poudres de bat

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2

Nadouf, Mohammed. "Synthese et etude de poudres submicroniques de titanate de baryum et de ses solutions solides avec le strontium." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13129.

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On etudie les solutions solides entre titanate de baryum et titanate de strontium. Deux methodes de synthese de ces perovskites sont abordees : la methode ceramique classique, ou l'on fait reagir des solides a haute temperature, et la methode oxalique qui fait intervenir la preparation d'un sel mixte que l'on decompose a basse temperature. Les relations entre la nature des sels des oxydes, le ph de precipitation, la temperature de reaction ou de precipitation et les caracteristiques structurales et proprietes physiques des ceramiques frittees sont etudiees

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3

El, Hadigui Saïd. "Etude physico-chimique de ceramiques fines (mgtio : :(3), mgtio::(4), yba::(2)cu::(3)o::(x)) prepares par decomposition de precurseurs organometalliques." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13075.

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Les 3 methodes de synthese exposees permettent d'abaisser les temperatures de formation des materiaux et d'ameliorer leurs qualites microstructurales. Pour les titanates de mg, l'augmentation de la reactivite des poudres a basse temperature a permis de mettre en evidence la formation intermediaire de phases metastables. On a etabli une correlation etroite entre la granularite des poudres et leur bonne densification lors du frittage. Pour le supraconducteur yba::(2)cu::(3)o::(x), la synthese par voie carboxylique permet d'abaisser la temperature de reaction et de conduire a des poudres peu aggl

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4

Fried, Naomi Anne. "Electrical properties of binary solutions of molten titanium dioxide-barium oxide." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10600.

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5

Wang, Li. "Study of sintering behaviours and mechanical properties of barium strontium cobalt iron oxide ceramics." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/study-of-sintering-behaviours-and-mechanical-properties-of-barium-strontium-cobalt-iron-oxide-ceramics(cefae647-0ab8-4f69-9aa6-f91c6aa8239e).html.

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The thesis studies the sintering behaviours and mechanical properties of perovskite-structured Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) ceramics. The sintering behaviours of BSCF are studied by sintering BSCF powder using a series of sintering temperatures and dwell times. Under all circumstances, only a cubic perovskite structure is identified in as-sintered samples. The relative density of BSCF increases with increasing sintering temperature and dwell time, but shows a more significant increase with increasing temperature. While the grain size increases with increasing sintering temperature and dwell

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6

Hicks, William Carl. "Rare earth erbium doped yttrium barium copper oxide superconducting domains and their magnetic properties /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/10608.

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7

SAVINO, UMBERTO. "Physical properties of metal-oxide surfaces for CO2 valorisation." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2823956.

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8

Tulyapitak, Tulyapong. "CURE AND MECHANICAL PROPERTIES OF CARBOXYLATED NITRILE RUBBER (XNBR) VULCANIZED BY ALKALINE EARTH METAL COMPOUNDS." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1158067153.

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9

Rana, Bakht Bahadur. "Some physical and chemical properties of heavy metal oxide glasses." Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484284.

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10

Opagiste, Christine. "Synthèse et étude des propriétés magnétiques des composés supraconducteurs surdopés à base de thallium." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10097.

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Cette etude sur les composes supraconducteurs surdopes tl#2ba#2cuo#6##d et tl#2ba#2cacu#2o#8##d concerne leurs syntheses, structures et proprietes magnetiques dans l'etat normal et supraconducteur. La synthese effectuee sous haute pression (100 bar d'oxygene, helium, argon) et a partir du precurseur tl#2ba#2o#5, permet d'eviter les pertes de thallium et la formation de bacuo#2. Concernant la phase tl#2ba#2cuo#6##d, le diagramme de phase (diagramme iso-t#c) a ete etabli dans le plan t#r#e#c#u#i#t, p(o#2). Donnant acces au domaine surdope (t#c variant de 92 a ok), il nous a permis d'etudier les

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11

Kuo, Fang-Ling. "Electrical and Structure Properties of High-κ Barium Tantalite and Aluminum Oxide Interface with Zinc Oxide for Applications in Transparent Thin Film Transistors". Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc84233/.

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ZnO has generated interest for flexible electronics/optoelectronic applications including transparent thin film transistors (TFTs). For this application, low temperature processes that simultaneously yield good electrical conductivity and optical transparency and that are compatible with flexible substrates such as plastic, are of paramount significance. Further, gate oxides are a critical component of TFTs, and must exhibit low leakage currents and self-healing breakdown in order to ensure optimal TFTs switching performance and reliability. Thus, the objective of this work was twofold: (1) de

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12

Vaghefi, Seyedeh Pegah Mirzadeh. "Structural and physical properties studies on multiferroic oxide films and heterostructures." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/18502.

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Doutoramento em Engenharia Física<br>O presente trabalho de doutoramento é um estudo de propriedades físicas e aspectos estruturais de filmes de óxidos e heteroestruturas multiferróicas, englobando técnicas de caracterização do nível macroscópico ao microscópico. O objectivo principal é a compreensão de novas heteroestruturas epitaxiais multifuncionais e as suas interfaces para junções de túnel magnetoelétricas e filtros de spin. Os principais materiais em estudo foram manganitas à base de La dopadas com iões divalentes (ba, Sr), apresentando efeito magnetoelétrico, sendo preparadas em

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13

Zalich, Michael Andrew. "Physical Properties of Magnetic Macromolecule-Metal and Macromolecule-Metal Oxide Nanoparticle Complexes." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/27528.

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Magnetic nanoparticles are of considerable interest owing to their potential applications in biotechnology and the magnetic recording industry. Iron oxides have received much attention owing to their oxidative stability and biocompatibility; however, other transition metals and their alloys are also under investigation. Cobalt has one of the largest magnetic susceptibilities of these materials, but it readily oxidizes upon exposure to air resulting in antiferromagnetic oxide. Hence, coating cobalt nanoparticles with an oxygen-impermeable sheath would confer numerous benefits. Cobalt nanopa

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14

Nico, Cláudio Miguel Silva. "Niobium oxides and niobates physical properties." Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14851.

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Doutoramento em Nanociências e Nanotecnologia<br>Niobium oxides have been pointed as an alternative to tantalum in the production of solid electrolytic capacitors, with advantages regarding the dielectric constant, density and price. In this work, it is intended to create a new family of niobium oxides based capacitors, adapting the technology and production line currently used with tantalum. Despite the known potentialities of niobium oxides, and many types of niobates, in several technological applications, the understanding of these oxide systems is still noticeably insufficient. Hen

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15

Starikov, V. V. "Oxide films with electret properties as coating for medical implant." Thesis, Lviv Polytechnic National University, 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/43966.

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16

Bailey, Steven John. "A study of the catalytic properties of unpromoted and promoted cobalt-iron oxide spinels." Thesis, Brunel University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280895.

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17

Baker, Taleb. "Molecular Computer Simulations of Graphene oxide intercalated with methanol: Swelling Properties and Interlayer Structure." Thesis, Umeå universitet, Institutionen för fysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-135941.

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18

Wu, Chen. "Elemental growth of oxide thin films." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:ac82a52f-bb62-41d0-a604-3cf7a95e5aaf.

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This thesis reports on the elemental growth of oxide thin films including TiO<sub>x</sub>, BaO<sub>x</sub> and Ba<sub>x</sub>Ti<sub>y</sub>O<sub>z</sub> by Ti/Ba deposition and oxidation. The films were grown on two different substrates, Au(111) and SrTiO₃(001), and studied using a variety of surface characterisation techniques. On the reconstructed Au(111) surface, three different TiO<sub>x</sub> structures were obtained with increasing Ti amounts deposited: a (2 × 2) Ti₂O₃ honeycomb structure, a pinwheel structure that is the result of a Moiré pattern, and a triangular island TiO<sub>1.30</s

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19

Wang, Junwei. "Chemical doping of metal oxide nanomaterials and characterization of their physical-chemical properties." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1333829935.

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20

Kumar, U. "Biosynthesis of metal/metal-oxide nanoparticles and measurement of their physical, biophysical properties." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2011. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3774.

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21

Podpirka, Adrian Alexander. "Studies on Synthesis, Structural and Electrical Properties of Complex Oxide Thin Films: Ba1-xSrxTiO3 and La2-xSrxNiO4." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10247.

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High performance miniaturized passives are of great importance for advanced nanoelectronic packages for several applications including efficient power delivery. Low cost thin film capacitors fabricated directly on package (and/or on-chip) are an attractive approach towards realizing such devices. This thesis aims to explore fundamental frequency dependent dielectric and insulating properties of thin film high-k dielectric constant in the perovskite and perovskite-related complex oxides. Throughout this thesis, we have successfully observed the role of structure, strain and oxygen stoichiometr

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22

Mefford, Olin Thompson. "Physical Properties of Macromolecule-metal oxide nanoparticle complexes: Magnetophoretic Mobility, Size, and Interparticle Potentials." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/28133.

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Magnetic nanoparticles coated with polymers hold great promise as materials for applications in biotechnology. In this body of work, magnetic fluids for the treatment of retinal detachment are examined closely in three regimes; motion of ferrofluid droplets in aqueous media, size analysis of the polymer-iron oxide nanoparticles, and calculation of interparticle potentials as a means for predicting fluid stability. The macromolecular ferrofluids investigated herein are comprised of magnetite nanoparticles coated with tricarboxylate-functional polydimethylsiloxane (PDMS) oligomers. The nanopa

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23

Wu, Mindy(Mindy Li). "Investigation of physical and chemical properties of scandium oxide using a thermal imaging furnace." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122180.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2019<br>"June 2019." Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 64-68).<br>Properties of high melting temperature materials have yet to be well-established due to the experimental difficulty of making such measurements. One such material for which properties are not reported are scandium oxide, a material of recent interest due to the wide range of technological applications it has and the enormous development potential of scandium metal. The absence of

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24

Karakas, Yilmaz. "Chemical processing, phase evolution, grain growth and electrical properties in ZnO varistor prepared by oxide coprecipitation process." Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319408.

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25

Orlat, Simon. "Development of an interatomic potential for the study of the thermodynamic properties of oxide coumpounds containing americium." Thesis, KTH, Fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-288982.

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For the purpose of americium recycling, the effect of americium content on the nuclear fuel behaviour needs to be investigated. Atomic scale simulations and classical molecular dynamic simulations provide a tool of choice for the study of thermophysical properties of the nuclear fuel. In this work, we fitted a new interatomic empirical potential for (U,Am)O2 based on the CRG formalism. Our work enabled us to propose at the same time a new potential for the study of the Am-O system. The proposed potentials show good agreement with lattice parameters and enthalpy increments. We finally computed

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26

Faulmann, Christophe. "Conducteurs derives de metaux de transition : complexes moleculaires, polymeres, oxydes de cuivre." Toulouse 3, 1988. http://www.theses.fr/1988TOU30160.

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27

Nethavhanani, Takalani. "Synthesis of zinc oxide nanoparticles by a green process and the investigation of their physical properties." University of the Western Cape, 2017. http://hdl.handle.net/11394/6295.

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Magister Scientiae - MSc (Physics)<br>Zinc oxide (ZnO) is a wide and direct semiconductor with a wurtzite crystal structure. Its multifunctionality as the ideal candidate in applications such as blue-UV light emitting diodes, transparent conducting oxide, selective gas sensor and efficient catalyst support among others, has attracted a significant interest worldwide. Nano-scaled ZnO has been synthesized in a plethora of shapes. A rich variety of physical and chemical methodologies have been used in the synthesis of undoped or doped ZnO. However, such methods either necessitate relatively

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28

Kurbanov, K. R., and N. N. Kurbanova. "Structrural peculiarities and some electrical-and-physical properties of bismuth oxide and antimony trichloride and tribromide." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20652.

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The systems of antimony oxide (III) – antimony chloride (III), antimony oxide (III) – antimony bromide (III), bismuth oxide (III) – bismuth chloride (III) and bismuth oxide (III) – bismuth bromide (III) are the sections of the triple systems metal - oxygen - halogen. In the present report there is considered the information found in literature of the phase diagrams of binary systems components: metal – oxygen, metal – halogen – and literature data of methods of obtaining, structures and properties of the compounds in the systems. The analysis of the elementary cells parameters permitted

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29

Hocker, John-andrew Samuel. "Molecular and Performance Properties of Poly(Amides & Imides) and the Use of Graphene Oxide Nano-Particles for Improvement." W&M ScholarWorks, 2016. https://scholarworks.wm.edu/etd/1477068376.

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Macroscopic properties of polymers, and in general all types of materials, are innately related to their molecular structure and intermolecular properties. This dissertation offers insight into how the molecular structure, chain properties, and inter-molecular chain interactions within PA11 can be used to explain and predict improved macro level performance properties; and how the addition of graphene oxide nanosheets enhances the performance properties of PA11 and polyimide(ODA-BTDA) through those same intermolecular interactions. Chapter 3 describes the unexpected result that weak small orga

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30

Simo, Aline. "Physical properties of vanadium dioxide nanoparticles: application as 1-d nanobelts room temperature for hydrogen gas sensing." Thesis, University of the Western Cape, 2013. http://hdl.handle.net/11394/4581.

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Philosophiae Doctor - PhD<br>Transition metal oxides magneli phases present crystallographic shear structure which is of great interest in multiple applications because of their wide range of valence, which is exhibited by the transition metals. The latter affect chemical and physical properties of the oxides. Amongst them we have nanostructures VO2 system of V and O components which are studied including chemical and physical reactions based on non-equilibrium thermodynamics. Due to their structural classes of corundum, rocksalt, wurtzite, spinel, perovskite, rutile, and layer structure, thes

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31

Hakat, Yasemin. "Studies on the Preparation, Immobilization, and Luminescence Properties of Zinc Oxide (ZnO)Quantum Dots." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etd/1406.

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Quantum dots are a part of very important our technological future because of their intriguing and useful properties. These properties are different in character from those of the corresponding bulk material. Quantum dots are inorganic artificial semiconductor nanocrystal whose electrons influence their physical and chemical properties. Zinc oxide quantum dots were synthesized through an ethanol based precipitation via colloidal synthesis method at various pH values. Various emission colors were obtained because the excited quantum dots of various sizes emitted specific wavelengths of light. T

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32

SILVA, MAVIAEL J. da. "Desenvolvimento de selantes vitrocerâmicos para uso em SOFC pertencentes ao sistema BAS (BaO-Alsub(2)0sub(3)-SiOsub(2)) modificados com Bsub(2)Osub(3)." reponame:Repositório Institucional do IPEN, 2014. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23655.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-04-10T16:38:07Z No. of bitstreams: 0<br>Made available in DSpace on 2015-04-10T16:38:07Z (GMT). No. of bitstreams: 0<br>Tese (Doutorado em Tecnologia Nuclear)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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33

Lu, Xiaonan. "Effects of Transition Metal Oxide and Mixed-Network Formers on Structure and Properties of Borosilicate Glasses." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404587/.

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First, the effect of transition metal oxide (e.g., V2O5, Co2O3, etc.) on the physical properties (e.g., density, glass transition temperature (Tg), optical properties and mechanical properties) and chemical durability of a simplified borosilicate nuclear waste glass was investigated. Adding V2O5 in borosilicate nuclear waste glasses decreases the Tg, while increasing the fracture toughness and chemical durability, which benefit the future formulation of nuclear waste glasses. Second, structural study of ZrO2/SiO2 substitution in silicate/borosilicate glasses was systematically conducted by mol

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34

Cao, Lei [Verfasser], Thomas [Akademischer Betreuer] Brückel, and Matthias [Akademischer Betreuer] Wuttig. "Controlling structural and physical properties of epitaxial transition metal oxide films through oxygen stoichiometry / Lei Cao ; Thomas Brückel, Matthias Wuttig." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/121801962X/34.

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Cao, Lei Verfasser], Thomas [Akademischer Betreuer] [Brückel, and Matthias [Akademischer Betreuer] Wuttig. "Controlling structural and physical properties of epitaxial transition metal oxide films through oxygen stoichiometry / Lei Cao ; Thomas Brückel, Matthias Wuttig." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/121801962X/34.

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36

Herring, Natalie. "Formation Mechanisms and Photocatalytic Properties of ZnO-Based Nanomaterials." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/494.

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Zinc Oxide (ZnO) is one of the most extensively studied semiconductors because of its unique properties, namely, its wide band gap (3.37 eV) and high excitation binding energy (60 meV). These properties make ZnO a promising material for uses in a broad range of applications including sensors, catalysis and optoelectronic devices. The presented research covers a broad spectrum of these interesting nanomaterials, from their synthesis and characterization to their use as photocatalyts. A new synthetic approach for producing morphology controlled ZnO nanostructures was developed using microwave i

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37

Kim, Gideok [Verfasser], and Bernhard [Akademischer Betreuer] Keimer. "Spectroscopic investigation of defects and their impact on the physical properties of transition-metal-oxide heterostructures / Gideok Kim ; Betreuer: Bernhard Keimer." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2020. http://d-nb.info/1212034635/34.

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38

DATTEO, MARTINA. "Quantum Chemical modelling of physical and chemical properties of TiO2 hybrid interfaces between a semiconducting oxide surface and carbon-based layer." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2020. http://hdl.handle.net/10281/263111.

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I materiali compositi hanno suscitato un notevole interesse nella comunità scientifica grazie alle loro eccezionali proprietà e alle loro promettenti applicazioni. Infatti, i materiali interfacciati hanno un ruolo cruciale in innumerevoli applicazioni. Nel presente lavoro di tesi, diversi tipi di interfacce ossido/strato di carbonio sono state considerate per svolgere un’indagine chimica quantistica. La superficie del biossido di titanio è stata interfacciata con monostrati a base di carbonio, che può essere sia bidimensionale ed inorganico (grafene), sia uno strato denso di molecole organiche

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39

Veneman, Peter Alexander. "SCANNING CURRENT SPECTROSCOPY: A CONDUCTING PROBE ATOMIC FORCE MICROSCOPY TECHNIQUE FOR EXPLORING THE PHYSICAL AND ELECTRONIC PROPERTIES OF METAL OXIDE/ORGANIC INTERFACES." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/195049.

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Organic photovoltaics (OPVs) offer the prospect of inexpensive processing compared with conventional crystalline semiconductor cells. These cells are still lower in efficiency than their inorganic counterparts, in part because a detailed understanding of the role that interfaces play in these devices is lacking. The electronic properties of the surface of the common transparent electrode Indium:Tin Oxide (ITO) have been studied both on a macroscopic and nanoscopic scale, and the interface between ITO and organic materials has been studied on a macroscopic scale as well. Little work has been do

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40

Norlin, Anna. "Investigation of electrochemical properties and performance of stimulation/sensing electrodes for pacemaker applications." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176.

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41

Kosak, Rukan. "The Effects Of Promoters On The Sulfur Resistance Of Nox Storage/reduction Catalysts: A Density Functional Theory Investigation." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613442/index.pdf.

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High fossil fuel consumption in transportation and industry results in an increase of the emission of green-house gases. To preserve clean air, new strategies are required. The main intention is to decrease the amount of CO2 emission by using lean-burn engines while increasing the combustion efficiency and decreasing the fuel consumption. However, the lean-burn engines have high air-to-fuel ratio which complicates the reduction of the oxides of nitrogen, NOx . The emission of these highly noxious pollutants, NOx , breeds both environmental and health problems. Thus, new catalytic strategies ha

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42

Zhang, Shanting. "Study of fluorine-doped tin oxide (FTO) thin films for photovoltaics applications." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI021/document.

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Avec la demande toujours croissante d'énergie à laquelle l’homme fait face, le photovoltaïque (PV), qui convertit le rayonnement solaire en électricité, a connu ces dernières décennies un développement important. Bien que le marché PV actuel soit principalement dominé par les technologies à base de Si cristallin, la technologie PV à base de couches minces porte toujours l'espoir de contribuer efficacement à l'avenir vis-à-vis de la crise énergétique en raison de son coût beaucoup plus faible et d'une efficacité raisonnable.Les matériaux transparents conducteurs (TCM), principalement des oxydes

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43

Chamsa-ard, Wisut. "Synthesis, characterisation and thermo-physical properties of highly stable graphene oxide-based aqueous nanofluids for low-temperature direct absorption solar collectors and solar still desalination." Thesis, Chamsa-ard, Wisut (2019) Synthesis, characterisation and thermo-physical properties of highly stable graphene oxide-based aqueous nanofluids for low-temperature direct absorption solar collectors and solar still desalination. PhD thesis, Murdoch University, 2019. https://researchrepository.murdoch.edu.au/id/eprint/55043/.

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Humanities’ insatiable demand for energy and fresh water has never been satisfied and continues to increase with an ever-increasing global population. Because both demands currently rely heavily on fossil fuels, the resulting detrimental consequences of rising greenhouse gas emissions, global warming and environmental degradation present major challenges for every nation. Importantly, the efficient conversion of energy to perform useful work is a factor that directly contributes to the financial development and economic sustainability of a country. Furthermore, the current global water demand

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44

Nguyen, Thi Hong Duong. "Präparation und Charakterisierung von Clathrat-I-Phasen im System Barium, Gold und Germanium." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-232898.

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Die vorliegende Untersuchung behandelt den Homogenitätsbereich, sowie die strukturellen und physikalischen Eigenschaften der Clathrat-I-Phasen im System Ba-Au-Ge. Im Zustandsdiagramm existieren zwei separate Phasenbereiche mit Clathrat-I-Phasen unterschiedlicher Symmetrie, welche durch Au-Gehalt und Leerstellenkonzentration bestimmt wird. Bei niederem Goldgehalt existiert die Clathrat-I-Phase mit einer 2 × 2 × 2 Überstruktur des Basistyps in der Raumgruppe Ia-3d. Der Existenzbereich dieser Phase reicht bei 800 °C bis zur Zusammensetzung Ba8Aux•3–0.563xGe43–0.437x mit x = 1.1. Nach einem schmal

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Mandal, Tapas Kumar. "Perovskite Related Oxides: Development Of New Synthetic Methods, Materials And Properties." Thesis, 2004. https://etd.iisc.ac.in/handle/2005/310.

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Oxides of ABO3 composition (A = alkali, alkaline earth or rare earth metal in general, B = transition metal) constitute a large family of metal oxides of current interest to solid state and materials chemistry. Among the several structure types exhibited by ABO3 oxides (ilmenite, LiNbO3, perovskite, YAIO3/YMnO3, KSbO3, pyrochlore, among others), the perovskite structure is probably the most well known and widely investigated. The ideal perovskite structure consists of a three-dimensional (3D) framework of corner-sharing BO6 octahedra in which the A cation resides in the dodecahedral site surro

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Mandal, Tapas Kumar. "Perovskite Related Oxides: Development Of New Synthetic Methods, Materials And Properties." Thesis, 2004. http://hdl.handle.net/2005/310.

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Oxides of ABO3 composition (A = alkali, alkaline earth or rare earth metal in general, B = transition metal) constitute a large family of metal oxides of current interest to solid state and materials chemistry. Among the several structure types exhibited by ABO3 oxides (ilmenite, LiNbO3, perovskite, YAIO3/YMnO3, KSbO3, pyrochlore, among others), the perovskite structure is probably the most well known and widely investigated. The ideal perovskite structure consists of a three-dimensional (3D) framework of corner-sharing BO6 octahedra in which the A cation resides in the dodecahedral site surro

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Yang, Chia-Han, and 楊佳翰. "Study of microstructure and electrochemical properties of zirconium-doped barium cerium oxide." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qy2ae8.

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碩士<br>國立中央大學<br>能源工程研究所<br>107<br>This study explores the relationship between the ratio of cerium and zirconium to study the relationship between the microstructure and electrical properties of barium cerium oxide with different zirconium doping ratios. In this study, BaCe0.8-xZrxY0.2O3-δ (BCZYx, x=0.1~0.5) electrolyte powder was successfully prepared by solid state reaction method. As the increase of Zr doping ratio, the XRD diffraction angle of the main peak of perovskite increased, indicating Zr successfully doped into the BaCeYO3. The SEM microstructure shows that as the Zr doping ratio i

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(9132629), Shikhar Misra. "Metal-Oxide Nanocomposite for Tunable Physical Properties." Thesis, 2020.

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<p>Understanding how light interacts with the matter is essential for developing future opto-electronic devices. Furthermore, tuning such light-matter interaction requires designing new material platforms that is essential for developing devices which are functional in different light wavelength regimes. Among these designs, particle-in-matrix, multilayer or nanowire morphology, consisting of metal and dielectric materials, have been demonstrated for achieving improved physical and optical properties, such as ferroelectricity, ferromagnetism and negative refraction. For example, Au-TiO<sub>2</

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Huan-Chia, Chuang, and 莊桓嘉. "Study of physical properties of zinc holmium oxide / zinc oxide bilayer structures." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/40463260070475799435.

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碩士<br>國立臺灣師範大學<br>物理學系<br>102<br>Pulsed-laser deposition (PLD) was applied to grow holmium-doped ZnO(Ho:ZnO) thin films on c-sapphire substrate with different holmium(Ho) concentrations and with ZnO buffer layer. The nominal doping density of Ho ranges from 3％－15％. The physical properties of Ho:ZnO thin films were investigated by x-ray diffraction (XRD), photoluminescence(PL), and superconducting quantum interference device (SQUID). The XRD patterns show that there is no secondary phase. Photoluminesence spectroscopy showed the major defects are zinc vacancy and interstitial zinc. The m-H curv

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Lu, Po-Yu, and 陸柏佑. "Synthesis and Physical Properties of Zinc Oxide/Graphene and Copper Oxide/Graphene Nanocomposites." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/18797635276870990801.

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碩士<br>國立高雄師範大學<br>化學系<br>101<br>Part1 An one-step in situ method for the synthesis of zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposites by hydrothermal technique is reported. This simple method involves a hydrothermal treatment of a solution comprising of graphene oxide (GO), ZnCl2,and NaOH, to obtain the product(ZnO/rGO composite). The product was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Ultraviolet–visible-near infrared (UV-Vis-NIR) spectroscopy, and Thermogravimertry Analysis(TGA). These results confirm that ZnO crystal structure do

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