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Dissertations / Theses on the topic 'Synchrotron Diffraction Studies'

Author: Grafiati

Published: 7 September 2023

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1

Morris, Christopher. "Synchrotron powder diffraction studies of metal-organic frameworks." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/41941/.

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This thesis describes a variety of high resolution synchrotron powder diffraction studies of guest-loaded metal-organic frameworks (MOFs). These studies have been used to provide insight into the binding mechanisms of the guest molecules. Chapter 1 contains an introduction to MOFs, highlighting some potential applications that were investigated in this work. A description of the powder diffraction analysis techniques is also included. Chapter 2 describes the design and implementation of a remote control gas dosing system for use on the powder diffraction beamline (I11) at Diamond Light Source.

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2

Rule, Robert J. "Studies related to crystal growth using synchrotron radiation diffraction." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291738.

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3

Nguti, N. D. "Laue and anomalous diffraction studies in synchrotron radiation protein crystallography." Thesis, Keele University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295803.

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4

Maginn, Stephen James. "Applications of synchrotron radiation Laue diffraction in molecular structure studies." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253418.

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5

Treacy, Jon. "Synchrotron studies of TiO2 single crystal surfaces." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/synchrotron-studies-of-tio2-single-crystal-surfaces(4c8a0ee8-b2b8-460c-a174-b4478256d4e7).html.

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Titanium dioxide (TiO2) is an abundant, inexpensive and non-toxic material that is most commonly used as a white pigment in paints. Since the discovery by Fujishima and Honda in 1972 that water splits into hydrogen and oxygen gas at the surface of TiO2 on exposure to sunlight, there has been a massive research effort into understanding and improving the photoactivity of TiO2. One aspect of this is the characterisation of so-called ‘model’ surfaces, i.e. very large single crystal faces with low levels of contamination at ultra high vacuum (UHV) pressures, allowing the study of a single structur

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6

Bell, A. M. T. "Structural studies using synchrotron X-ray powder diffraction and other techniques." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596545.

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Chapter 1 gives an introduction to X-ray and neutron powder diffraction and the use of these techniques for crystal structure determination and refinement. The Rietveld structure refinement method is described and examples of different methods of structure determination from powder diffraction data are given. The techniques of EXAFS and Mössbauer spectroscopy, which were used to provide additional structural information, are also introduced. Chapter 2 describes the different radiation sources and experimental techniques used in this work. Chapter 3 describes a structural study of magnetite, Fe

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7

Day, Sarah Joanne. "Studies of cosmic dust analogues using synchrotron X-ray powder diffraction." Thesis, Keele University, 2014. http://eprints.keele.ac.uk/1215/.

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The structural evolution of cosmic dust analogues has been investigated using in situ synchrotron X-ray powder diffraction (SXPD) at the Diamond Light Source. Amorphous Mg/Ca silicates are produced as analogues of cosmic dust using a modified sol-gel method. They are studied under non-ambient temperature and pressure conditions using in situ powder diffraction, complemented by FTIR and Raman spectroscopy. The solid-state mineralisation of amorphous grains is observed by thermal annealing and the results of this allow the environmental conditions leading to the formation of crystalline dust gra

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8

Hopkins, John Dawson. "Structural studies of mixed metal oxides by neutron diffraction and synchrotron radiation." Thesis, Keele University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321701.

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9

Yang, Ning. "Synchrotron Diffraction Studies of Spontaneous Magnetostriction in Rare Earth Transition Metal Compounds." Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2004. http://www.osti.gov/servlets/purl/835381-gxv1Km/webviewable/.

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10

Saunders, Lucy Katherine. "Synchrotron X-ray diffraction studies of proton transfer in hydrogen bonded molecular complexes." Thesis, University of Bath, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.698966.

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The technique of single crystal synchrotron X-ray diffraction is applied in the study of solid state proton transfer processes in hydrogen bonded molecular complexes. Proton transfer processes are of interest where they are responsible for a number of physical and chemical properties within solid state functional materials; their study gives insight into the occurrence of such properties and where they may be targeted and tuned in future materials. The synchrotron X-ray diffraction technique has been trialled with respect to the potential it offers for high throughput capability for studying p

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11

Strusevich, Dmitry. "Development of in-situ synchrotron X-ray powder diffraction techniques for studies of catalytic systems." Thesis, Birkbeck (University of London), 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497909.

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12

Siddiqui, Samera. "Crystallographic and microstructural studies of dental enamel using synchrotron X-ray diffraction and complementary techniques." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8987.

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The complex microstructure and properties of dental enamel have been studied for decades using a variety of quantitative and qualitative techniques in order to gain a greater depth of understanding behind the chemical and physical processes that are associated with the formation and destruction of this biological apatite. Dental enamel is composed of highly ordered carbonated hydroxyapatite crystals which, together with its small organic component, are responsible for its mechanical strength, allowing it to serve its functional purpose. Environmental changes at any stage of the biomineralisati

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13

Stolpe, Moritz [Verfasser]. "Synchrotron x-ray diffraction studies of bulk metallic glass forming liquid and glasses / Moritz Stolpe." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2020. http://d-nb.info/1218075481/34.

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14

Martin-Fernandez, Maria Luisa. "The molecular structure and function of straited frog muscle : X-ray diffraction studies with synchrotron radiation." Thesis, Keele University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317678.

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15

Prilliman, Gerald Stephen. "Synchrotron X-ray diffraction studies of phase transitions and mechanical properties of nanocrystalline materials at high pressure." Berkeley, Calif. : Oak Ridge, Tenn. : Lawrence Berkeley National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2003. http://www.osti.gov/servlets/purl/825137-DcNEaM/native/.

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Thesis (Ph.D.); Submitted to The University of California at Berkeley, Berkeley, CA (US); 1 Sep 2003.<br>Published through the Information Bridge: DOE Scientific and Technical Information. "LBNL--55022" Prilliman, Gerald Stephen. USDOE Director. Office of Science. Office of Basic Energy Sciences (US) 09/01/2003. Report is also available in paper and microfiche from NTIS.

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16

Krogh, Andersen Anne. "Studies of Inorganic Layer and Framework Structures Using Time-, Temperature- and Pressure-Resolved Powder Diffraction Techniques." Doctoral thesis, Stockholm University, Department of Physical, Inorganic and Structural Chemistry, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-23.

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<p>This thesis is concerned with <i>in-situ</i> time-, temperature- and pressure-resolved synchrotron X-ray powder diffraction investigations of a variety of inorganic compounds with twodimensional layer structures and three-dimensional framework structures. In particular, phase stability, reaction kinetics, thermal expansion and compressibility at non-ambient conditions has been studied for 1) Phosphates with composition <i>M</i><i>IV</i>(HPO<sub>4</sub>)<sub>2</sub>·<i>n</i>H<sub>2</sub>O (<i>M</i><i>IV</i> = Ti, Zr); 2) Pyrophosphates and pyrovanadates with composition<i> M</i><i>IV</i>X<su

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17

Parton, Mark. "Time-resolved X-ray diffraction studies of the structure development in biopolymers under industrial processing conditions using synchrotron radiation." Thesis, Keele University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436142.

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18

RATHOD, CHANDRASEN. "DIFFRACTION STUDIES OF DEFORMATION IN SHAPE MEMORY ALLOYS AND SELECTED ENGINEERING COMPONENTS." Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2892.

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Deformation phenomena in shape memory alloys involve stress-, temperature-induced phase transformations and crystallographic variant conversion or reorientation, equivalent to a twinning operation. In near equiatomic NiTi, Ti rich compositions can exist near room temperature as a monoclinic B19' martensitic phase, which when deformed undergoes twinning resulting in strains as large as 8%. Upon heating, the martensite transforms to a cubic B2 austenitic phase, thereby recovering the strain and exhibiting the shape memory effect. Ni rich compositions on the other hand can exist near room tempera

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19

Maimaitiyili, Tuerdi. "In-situ phase studies of the Zr-H system." Licentiate thesis, Malmö högskola, Teknik och samhälle, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-7785.

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Zirconium alloys are widely used in the nuclear industry because of their high strength, good corrosion resistance and low neutron absorption cross-section. However, zirconium has strong affinity for hydrogen, which may lead to hydrogen concentration build-up over time during a corrosion reaction when exposed to water. Hydrogen stays in solution at higher temperature but precipitates as zirconium hydrides at ambient temperatures. The formation of zirconium hydrides is considered to be a major cause of embrittlement, in particular as a key step in the mechanism of delayed hydride cracking. Desp

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20

Zhong, Zhengye [Verfasser]. "In situ tensile investigations on AA 7020-T6 using synchrotron diffraction for texture, lattice strain and defect density studies / Zhengye Zhong." Clausthal-Zellerfeld : Universitätsbibliothek Clausthal, 2015. http://d-nb.info/1078695237/34.

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21

Mohamed, Zin Muhammad Rawi. "Time resolved x-ray diffraction studies of strain-induced crystallisation in poly(lactic acid) using synchrotron radiation under industrial processing conditions." Thesis, Keele University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.528364.

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22

Wright, Anthony K. "Time-resolved X-ray diffraction studies of the molecular organisation in polymer materials under thermal and mechanical stress using synchrotron radiation." Thesis, Keele University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409824.

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23

Swann, Nichola Jean. "Time-resolved studies of the crystallisation and dehydration of lactose and other hydrates using synchrotron X-ray and neutron powder diffraction techniques." Thesis, Keele University, 2015. http://eprints.keele.ac.uk/4216/.

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In-situ time-resolved synchrotron X-ray and neutron powder diffraction techniques have been applied to the study of solid state structural transitions within the organic polymorphic molecular systems of lactose, trehalose and theophylline. Diffraction techniques offer an unequalled method of polymorph identification and quantification, and have repeatedly demonstrated throughout this work that they can be utilised to follow and kinetically evaluate structural transitions in real time. The study of lactose crystallisation provides further proof of the transient ( lo::1/3) mixed crystal polymorp

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24

Le, Dréau Loïc. "Phase transitions and oxygen ordering in La2CoO4+δ and (T, T')-La2CuO4 : single crystal growth and structural studies using synchrotron and neutron diffraction methods". Rennes 1, 2011. https://ecm.univ-rennes1.fr/nuxeo/site/esupversions/7c5d8bfd-0aba-4091-9747-74ec7a28fb86.

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This thesis relates about structural studies of crystal oxides with variable oxygen stoichiometry. The synthesis procedure for large single crystal growth is detailed. These materials have a layered atomic structure in which extra-oxygen ions can be intercalated in a topotactic way by different methods, by electrochemistry already at ambient temperature or by thermal treatments under controlled atmosphere composition and pressure. The interstitial oxygen atoms are not statistically distributed within layers but are ordered at long-range, which provokes structural distortions of the crystal lat

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25

Hamann, Borrero Jorge Enrique. "X-ray studies of magnetism and electronic order in Fe-based materials." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-64870.

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The structure and magnetism of selected compounds of the pnictides iron based superconductors with chemical formula LnO{1-x}FeAsFx (Ln = La,Sm and Ce), commonly known as 1111, and of rare earth iron borates RFe3(BO3)4 (R = Tb, Gd, Nd and Y), were studied by means of hard x-ray diffraction. For the 1111 pnictides compounds, Rietveld refinement of powder x-ray diffraction measurements at room temperature reveals, that the ionic substitution of O by F has no effect on the structure of the FeAs layers of tetrahedra, whereas the major changes takes place in the LnO layer. These changes are reflect

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26

Carl, Matthew A. "Alloy Development and High-Energy X-Ray Diffraction Studies of NiTiZr and NiTiHf High Temperature Shape Memory Alloys." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1157525/.

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NiTi-based shape memory alloys (SMAs) offer a good combination of high-strength, ductility, corrosion resistance, and biocompatibility that has served them well and attracted the attention of many researchers and industries. The alloys unique thermo-mechanical ability to recover their initial shape after relatively large deformations by heating or upon unloading due to a characteristic reversible phase transformation makes them useful as damping devices, solid state actuators, couplings, etc. However, there is a need to increase the temperature of the characteristic phase transformation above

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27

Maity, Avishek. "Etude des mécanismes de diffusion de l’oxygène dans SrFeO3-x et Pr2NiO4+d, réalisée par diffraction du rayonnement synchrotron in situ sur monocristal." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT188/document.

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La compréhension des aspects fondamentaux de la diffusion de l'oxygène dans les oxydes solides à des températures modérées, jusqu'à température ambiante, est un enjeu majeur pour le développement d'une variété de dispositifs technologiques dans un avenir proche. Cela concerne, par exemple, le développement de la prochaine génération des électrolytes et membranes solides d'oxygène pour les piles à combustible de type SOFC. Autrement, les réactions d'intercalation de l'oxygène réalisées à basse température présentent un outil puissant pour contrôler le dopage en oxygène ainsi que des propriétés

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28

Muroyama, Norihiro. "Studies of inorganic crystal structures and gas adsorption process in mesoporous crystals : new approach through analysis of electron charge distribution by synchrotron powder X-ray diffraction /." Stockholm : Department of Physical, Inorganic and Structural Chemistry, Stockholm university, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7367.

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29

Faria, Guilherme Abreu 1987. "Exploring metallic materials behavior through in situ crystallographic studies by synchrotron radiation = Explorando o comportamento de materiais metálicos através de estudos cristalográficos in situ via radiação síncrotron." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265849.

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Orientador: Antonio Jose Ramirez Londono<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-26T15:15:59Z (GMT). No. of bitstreams: 1 Faria_GuilhermeAbreu_M.pdf: 7344692 bytes, checksum: e531c95d64110532e988972471c0e25d (MD5) Previous issue date: 2014<br>Resumo: O objetivo deste trabalho foi desenvolver a metodologia de medição e análise de dados para a instalação experimental XTMS. Esta instalação foi projetada para possibilitar a medição simultânea de difração de raios X e informações térmicas e mecânicas de

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30

Morris, Samuel Alexander. "X-ray studies of zeolites and MOFs." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/9891.

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This thesis is largely a study of the ADOR process (assembly-disassembly-organisation-reassembly) when applied to zeolite UTL. The final chapter of this thesis deals with the adsorption of the medical gases NO and CO onto the metal organic framework NiNaSIP. Chapter 4 is devoted to the disassembly and organisation steps of the ADOR process. Calcined UTL was hydrolysed using 0.1 – 12 M HCl solutions from 75 – 95 °C run over 10 mins to 72 hrs. A three step mechanism is proposed, which is comprised of an initial rapid hydrolysis that removes the majority of the interlayer constituents of UTL, cau

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31

Matthies, Blake E. "Diffraction studies of n-alkane films adsorbed on graphite /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9953881.

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32

Ostach, Daniel Michael [Verfasser], and Andreas [Akademischer Betreuer] Schreyer. "High Temperature Oxidation Behavior of (Ti,Cr,Al)N Coatings Studied by in-situ Synchrotron Radiation X-ray Powder Diffraction / Daniel Michael Ostach ; Betreuer: Andreas Schreyer." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1153884445/34.

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33

Hamann, Borrero Jorge Enrique. "X-ray studies of magnetism and electronic order in Fe-based materials." Doctoral thesis, 2010. https://tud.qucosa.de/id/qucosa%3A25497.

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The structure and magnetism of selected compounds of the pnictides iron based superconductors with chemical formula LnO{1-x}FeAsFx (Ln = La,Sm and Ce), commonly known as 1111, and of rare earth iron borates RFe3(BO3)4 (R = Tb, Gd, Nd and Y), were studied by means of hard x-ray diffraction. For the 1111 pnictides compounds, Rietveld refinement of powder x-ray diffraction measurements at room temperature reveals, that the ionic substitution of O by F has no effect on the structure of the FeAs layers of tetrahedra, whereas the major changes takes place in the LnO layer. These changes are reflect

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34

Joshi, Siddharth [Verfasser]. "Fundamental studies of structure and crystallinity of low & high molecular weight poly(3-hexylthiophene) P3HT by means of synchrotron X-ray diffraction / vorgelegt von Siddharth Joshi." 2008. http://d-nb.info/994271093/34.

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