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Dissertations / Theses on the topic 'SrTiO3'

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Published: 4 June 2021
Last updated: 26 July 2025

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1

Coletta, Vitor Carlos. "Síntese e caracterização dos compostos SrTi1-xCuxO3, CuO/SrTiO3 e NiO/SrTiO3 aplicados à catálise da reação de deslocamento gás-água." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-14092017-095459/.

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O titanato de estrôncio (SrTiO3) é um óxido de estrutura perovskita e tem sido intensamente estudado para uso em diversas aplicações, entre elas, como suporte catalítico. Entretanto, sua utilização especificamente na reação de deslocamento gás-água ainda é pouco explorada. Esta reação é de interesse para a produção de hidrogênio livre de CO, necessário para aplicações como o abastecimento de células de combustível. Este trabalho de tese teve como objetivo o estudo dos compostos SrTi1-xCuxO3, CuO/SrTiO3 e NiO/SrTiO3 como catalisadores para a reação de deslocamento gás-água, uma vez que, dentre
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2

Lu, Zhilun. "La doped SrTiO3 based oxide thermoelectrics." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/11817/.

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In this project, the thermoelectric properties of La-doped Sr3Ti2O7, Ca3Ti2O7 and SrTiO3 ceramics sintered in air and N2/5%H2 have been investigated. Different defect chemistry models were studied in an attempt to improve the thermoelectric performance of La-doped SrTiO3 and related systems. For La-doped Sr3Ti2O7 Ruddlesden-Popper (RP) ceramics, the three starting nominal compositions, (Sr1-xLax)3Ti2O7 (electronic donor-doping), (Sr1-3y/2Lay)3Ti2O7 (A-site vacancies) and (Sr1-zLaz)3Ti2-z/4O7 (B-site vacancies) were sintered under air and flowing N2/5%H2 at 1773 K. The La-doped air sintered cer
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3

Ruz, Sepúlveda Camila Paz. "Preparación y caracterización de nanocompositos en base de Sebs y nanopartículas de BaTiO3, SrTiO3 y (BaTiO3)-(SrTiO3)." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/169827.

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Memoria para optar al Título Profesional de Químico<br>El copolímero en bloque de estireno-etileno-butileno-estireno (SEBS) se caracteriza, entre otros aspectos, por ser un elastómero dieléctrico (ED). Los EDs se han empleado en el desarrollo de dispositivos capaces de imitar el comportamiento de músculos y estructuras biológicas. Estos dispositivos en base de ED, conocidos como actuadores, son capaces de exhibir cambio de forma como respuesta a una descarga eléctrica. Para que estos actuadores puedan exhibir eficientemente este cambio de forma, los ED que los constituyen deben ser flex
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4

Mao, Zhigang. "Microstructure-property relationships of SrTiO3 electronic ceramics." Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/251620.

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5

Hagenbeck, Rainer. "Simulation der elektrischen Korngrenzeneigenschaften akzeptordotierter SrTiO3-Keramiken /." Düsseldorf : VDI-Verl, 1998. http://www.gbv.de/dms/bs/toc/252211111.pdf.

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6

Beuermann, Lars. "Mikroskopische und spektroskopische Untersuchungen an SrTiO3-Oberflächen." Clausthal-Zellerfeld Papierflieger-Verl, 2009. http://d-nb.info/1000026329/04.

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7

Silva, Luís Fernando da. "Síntese e caracterização do composto SrTiO3 e SrTi1-xFexO3 através do método hidrotermal assistido por microondas." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-26092013-150719/.

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Dentre os materiais de estrutura perovskita, o titanato de estrôncio, SrTiO3, é um dos mais conhecidos e estudado por apresentar interessantes propriedades como a ferroeletricidade, fotoluminescência, entre outras. Além disso, tem sido reportado na literatura que a adição de diferentes dopantes ao composto SrTiO3 modifica suas propriedades dando origem, por exemplo, a materiais para serem aplicados como sensores de gás ou na fotocatálise. Diferentes trabalhos encontrados na literatura descrevem a síntese do composto SrTiO3 e suas soluções sólidas através do método hidrotermal. Entretanto, pou
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8

Gömann, Anissa. "Das Verhalten von donatordotierten SrTiO3-Oberflächen unter Hochtemperaturbehandlung." Clausthal-Zellerfeld : Papierflieger, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=974496510.

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9

Newell, David T. "The surface structure and reconstruction of SrTiO3 (001)." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491541.

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SrTi03 is a metal oxide with a perovskite structure which can support numerous surface reconstructions. On its (001) surface more than 7 reconstructions have been reported previously and substantiated with atomic scale imaging. These reconstructions include surface structures with periodicities of (2 xl), (2 x 2), c(4 X 4), c(4 X 2), c(6 X 2), (J5 x J5) - R26.6° and (V13 x V13) - R37.7°. Each of these reconstructions can be produced in a controlled and repeatable manner simply by changing the time, temperature, and environment in which the sample is annealed. This thesis provides the mos
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10

Hanzig, Juliane. "SrTiO3 unter Einfluss von Temperatur und elektrischem Feld." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2018. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-226537.

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Die Realstruktur des perowskitischen Modellsystems SrTiO3, welches in der Raumgruppe Pm-3m kristallisiert, wird durch die Sauerstoffvakanz als wichtigstem Defekt dominiert. Durch Temperaturbehandlung unter reduzierenden Bedingungen können Sauerstoffvakanzen in die Kristallstruktur eingebracht werden. Aufgrund ihrer positiven Ladung relativ zum Kristallgitter bewegen sie sich im elektrischen Feld entlang des TiO6-Oktaedernetzwerkes. Die Elektroformierung folgt dabei einem Arrheniuszusammenhang, wobei sowohl die Aktivierungsenergie als auch die Mobilität eine deutliche Abhängigkeit von der Krist
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11

Gobaut, Benoît. "Systèmes épitaxiés faiblement liés : le cas Ge/SrTiO3." Phd thesis, Ecole Centrale de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00818806.

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Dans un contexte où les limites intrinsèques des matériaux classiques de l'industrie CMOS sont en passe d'être atteintes du fait de la forte miniaturisation des composants, le développement de la microélectronique requiert la définition de nouvelles solutions pour combiner sur un même substrat (le silicium) des matériaux différents aux propriétés physiques variées. Ceci devrait permettre d'intégrer sur silicium des fonctionnalités nouvelles. Parmi les matériaux d'intérêt, les oxydes fonctionnels de la famille des pérovskites offrent une large gamme de propriétés et attirent donc une attention
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12

Ringham, Benjamin David. "Ab-initio studies of SrTiO3(001) surface reconstructions." Thesis, Loughborough University, 2007. https://dspace.lboro.ac.uk/2134/9844.

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A number of SrTiO3(001) surface reconstructions have been studied using Plato, Package for Linear Combinations of Atomic Type Orbitals, a first principles density functional theory approach. Energy calculations have been performed for each surface reconstruction, and phase diagrams produced for a range of temperatures and pressures.
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13

Sidoruk, Jakob. "Konkurrierende ferroische Ordnungsparameter in SrTiO3: Domänenverhalten und Schaltverhalten." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2014. http://hdl.handle.net/11858/00-1735-0000-0022-5F60-D.

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14

Ameiryan, Mojarad Shahin. "Leakage current and resistive switching mechanisms in SrTiO3." Thesis, University of Newcastle upon Tyne, 2013. http://hdl.handle.net/10443/2224.

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Resistive switching random access memory devices have attracted considerable attention due to exhibiting fast programming, non-destructive readout, low power-consumption, high-density integration, and low fabrication-cost. Resistive switching has been observed in a wide range of materials but the underpinning mechanisms still have not been understood completely. This thesis presents a study of the leakage current and resistive switching mechanisms of SrTiO3 metal-insulator-metal devices fabricated using atomic layer deposition and pulse laser deposition techniques. First, the conduction mechan
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15

Correia, Tatiana Maria Pereira. "Lattice and relaxation mechanisms in doped SrTiO3 ceramics." Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2266.

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Mestrado em Ciência e Engenharia de Materiais<br>Cerâmicas ferroeléctricas do tipo relaxador têm despertado um renovado interesse científico, devido às suas muitas aplicações em tecnologia: memórias dinâmicas de acesso aleatório, condensadores “bypass”, dispositivos com aplicações na gama das microondas, sensores piroeléctricos de baixa temperatura, etc. Estas aplicações estão associadas a problemas conceptuais, relacionados com a distribuição de agregados polares e suas interacções, e também com o efeito mediador das matrizes em que os agregados estão inseridos. Este trabalho tem como objecti
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16

Cheah, Wei Li. "Theory and simulation of ZrO2/SrTiO3 multilayer structures." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/10744.

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High ionic conductivity of nano-layered heteroepitaxial oxide systems reported in recent literature has been attributed to high interfacial mobility of anions, although this interpretation has remained controversial. My work aims to understand the mechanism of ionic motion in such heterostructures by simulating the atomic structure at the interfaces, specifically for a multilayer system of Y2O3-stabilised ZrO2 (YSZ) and SrTiO3. By probing the energy landscape with a genetic algorithm in which the interatomic potentials were modelled with simple classical pair potentials, possible low energy la
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17

Gao, Yakun. "Scanning tunnelling microscopy of epitaxial nanomaterials on SrTiO3." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:95aea669-0eca-47f2-aad6-ee24e4a5e117.

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This thesis focuses on the study of epitaxial nanomaterials grown on SrTiO3 substrates including their morphologies, their epitaxial relationship, the energetics of equilibrium crystals and the interactions with the substrates. The formation of ordered TiO<sub>x</sub>-rich dilines on the SrTiO<sub>3</sub>(001) surface was achieved following UHV annealing of sputtered surfaces. Upon extensive UHV annealing, leading to a significant TiO<sub>x</sub> surface enrichment, anatase TiO<sub>2</sub>(001) islands are nucleated on nanostructured SrTiO<sub>3</sub>(001). These (1 × 4) and (1 × 3) reconstruc
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18

Coleto, Ubirajara Junior. "Fotoatividade de heterojunções de SrTiO3, TiO2 e CaO /." Araraquara, 2019. http://hdl.handle.net/11449/191192.

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Orientador: Leinig Antônio Perazolli<br>Resumo: O presente trabalho buscou desenvolver fotocatalisadores cerâmicos por meio da produção de heterojunções inovadoras à base de SrTiO3, TiO2 e CaO, que tiveram suas fotoatividades avaliadas pela descoloração do corante Rodamina B (RhB) e pela obtenção de biodiesel, utilizando luz ultravioleta. As amostras TiO2, CaO e SrTiO3 foram obtidas pelo método de precursores poliméricos, método Pechini, e as heterojunções TiO2/SrTiO3, CaO/SrTiO3 e CaO/CaTiO3 foram preparados por rota sol-gel. Após síntese e tratamento térmico, as amostras foram caracterizadas
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19

Ardila, Diogenes Reyes. "Preparação e caracterização de fibras monocristalinas de SrTiO3, SrTi(1-X)RuXO3 e de Sr2RuO4." Universidade de São Paulo, 1996. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-02092010-090358/.

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Neste trabalho desenvolvemos processos de crescimento e caracterização de fibras monocristalinas de SrTiO3 e Sr2RuO4 puros e como soluções sólidas através da técnica LHPG (laser heated pedestal growth). Esses processos são descritos desde as sínteses dos compostos, preparação dos nutrientes e sementes necessários para aplicação da técnica. Alguns resultados inéditos foram obtidos relativos à influência de cada um desses procedimentos e das alterações de parâmetros próprios da técnica na qualidade e características das fibras monocristalinas obtidas através dos resultados da caracterização estr
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20

Ayala, A. "Aspects of the SrO-CuO-TiO2 Ternary System Related to the Deposition of SrTiO3 and Copper-Doped SrTiO3 Thin-Film Buffer Layers." Washington, D.C : Oak Ridge, Tenn. : United States. Dept. of Energy ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2004. http://www.osti.gov/servlets/purl/836697-HiUEwz/native/.

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Thesis (Ph.D.); Submitted to the Univ. of New Mexico, Albuquerque, NM (US); 20 Dec 2004.<br>Published through the Information Bridge: DOE Scientific and Technical Information. "LA-14197-T" A. Ayala. 12/20/2004. Report is also available in paper and microfiche from NTIS.
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21

Yamamoto, Masahiro, Hiromichi Ohta, and Kunihito Koumoto. "Thermoelectric phase diagram in a CaTiO3- SrTiO3 - BaTiO3 system." American Institute of Physics, 2007. http://hdl.handle.net/2237/8769.

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22

Minhas, Mohsin Zamir [Verfasser]. "Transport properties of LaAlO3/SrTiO3 nanostructures / Mohsin Zamir Minhas." Halle, 2017. http://d-nb.info/1144955254/34.

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23

Resende, João Avelãs. "Microstructure effects on the thermoelectric response of doped SrTiO3." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12581.

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Mestrado em Ciência e Engenharia de Materiais<br>Niobium doped SrTiO3 ceramics were prepared with varying density and grain size in order to study the effect on the thermoelectric properties and discover a possible way to enhance the figure of merit (ZT = S2 .σ.T.κ-1) of this oxide. The samples were prepared by the conventional solid-state reaction technique and the grain-size variation was carried-out by the variation of precursor powders, sintering and annealing time. Structural and microstructural characterization were carried-out by XRD, electron microscopy (SEM) and optical microscope (OM
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Piton, Marcelo Rizzo. "Síntese e caracterização do composto SrTi1-xMnxO3 nanoestruturado." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-29012015-215637/.

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Amostras nanoestruturadas do sistema SrTi1-xMnxO3 (STM) com x = 0%, 0.5%, 1%, 2.5%, 5% e 10% na forma de pó foram sintetizadas através do método dos precursores poliméricos. As propriedades térmicas, estruturais e ópticas das amostras STM calcinadas em diferentes temperaturas foram analisadas a temperatura ambiente através de técnicas de análise térmica, difração de raios-x, espectroscopia de absorção de raios-x e fotoluminescência. Os resultados obtidos através das técnicas de analise térmica mostraram que o íon manganês causa um efeito retardante, aumentando a temperatura onde ocorre o iníci
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Vistoli, Lorenzo. "Charge and spin transport in memristive La0.7Sr0.3Mno3/SrTiO3/Co devices." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9325/.

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Il lavoro svolto si concentra sul trasporto di carica e spin in dispositivi trilayer La0.7Sr0.3MnO3/SrTiO3/Co multifunzionali. Questi dispositivi mostrano sia magnetoresistenza che resistive switching, con un'interessante interazione fra i due effetti. Le giunzioni SrTiO3 sono state scelte per questo lavoro sia per via dei precedenti studi su SrTiO3 come barriera in dispositivi spintronici (cioè dispositivi con magnetoresistenza), sia perché sono promettenti come materiale base per costruire memristor (cioè dispositivi con resistive switching). Il lavoro di tesi è stato svolto all'Istitu
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Chen, Yu. "Artificial Synapses based on the Photoconductance of LaAlO3/SrTiO3 QuantumWells." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/669471.

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Al llarg dels últims anys, hi ha hagut un interès creixent en sistemes que, inspirats pels descobriments en neurobiologia, processen la informació sobre la base de xarxes neuronals on la plasticitat sinàptica és l'element nuclear per a desenvolupar càlculs o fins i tot per a emmagatzematge d'informació. En aquest domini de recerca, que comprèn la computació neuromòrfica, un dels objectius és replicar aspectes bàsics de tasques cognitives complexes mitjançant l'emulació de xarxes neuronals i sinapsis artificials, amb l'objectiu de superar el paradigma computacional basat en l'arquitectura de vo
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27

Gealy, Fred Daniel. "Photoelectrochemical determination of the low temperature redox kinetics in SrTiO3." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14198.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1989.<br>Includes bibliographical references (leaves 175-184).<br>by Fred Daniel Gealy III.<br>Ph.D.
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Silva, Marcia Rejane Santos da. "Obtenção de pós e filmes finos do sistema SrTiO3:Nd." Universidade Federal da Paraí­ba, 2010. http://tede.biblioteca.ufpb.br:8080/handle/tede/7191.

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Made available in DSpace on 2015-05-14T13:21:52Z (GMT). No. of bitstreams: 1 parte1.pdf: 2740601 bytes, checksum: 60bd87566aa111195ece86e01435aaf6 (MD5) Previous issue date: 2010-12-15<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>SrTiO3 is a compound with perovskite structure usually found with cubic phase. This works reports the synthesis of powders and thin films of the undoped and Nd3+ doped SrTiO3, replacing Ti4+ or Sr2+ with the stoichiometries SrTi1-xNdxO3 (x = 0.00; 0.01; 0.02; 0.04) and Sr0.99Nd0.01TiO3. The powders were synthesized by the polymeric pre
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Yuk, Simuck Francis. "Enantiospecificity of Chiral Pt Nanostructures Grown on Chiral SrTiO3 Surfaces." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1428947746.

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Kalkhoran, Rahmati Behnaz. "Microstructural studies on the reoxidation behavior of Nb-doped SrTiO3 ceramics." Stuttgart : Max-Planck-Inst. für Metallforschung, 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=97316588X.

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Jouan, Alexis. "DC and AC transport in field-effect controlled LaAlO3/SrTiO3 interface." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066073/document.

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Cette thèse est consacrée à l'étude des propriétés de transport statique et dynamique du gaz d'électrons bidimensionnel supraconducteur à l'interface LaAlO3/SrTiO3. Dans un premier temps, nous étudions l'effet du désordre microscopique induit par le dopage en Chrome, sur la supraconductivité et le couplage spin-orbite en fonction de la densité de porteur modulée par effet de champ. Dans une géométrie de grille locale au-dessus du gaz, nous montrons le contrôle électrostatique de la transition supraconducteur-isolant. De même, nous analysons l'ajustement du couplage spin-orbite contrôlé par eff
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Soledade, Luiz Edmundo Bastos. "Fotoluminescência de SrTiO3 dopado com Al, Y, Cr, V e Nb." Universidade Federal de São Carlos, 2003. https://repositorio.ufscar.br/handle/ufscar/6360.

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Made available in DSpace on 2016-06-02T20:35:07Z (GMT). No. of bitstreams: 1 TeseLEBS.pdf: 2405148 bytes, checksum: cf8bd70f6a3bf80cb6e524c1256c0e4f (MD5) Previous issue date: 2003-08-08<br>It was studied the effect of the dopants, Al, Y, Cr, Nb and V, on the photoluminescent properties of films and powders of amorphous strontium titanate. With this purpose the techniques of SEM, XRD, UV/Visible spectroscopy and room temperature photoluminescence were applied to film and powder samples of strontium titanate, prepared by the Pechini method. A literature survey was undertaken upon the structu
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Wang, Yifeng, Kyu Hyoung Lee, Hiromichi Ohta, and Kunihito Koumoto. "Thermoelectric properties of electron doped SrO(SrTiO3)n (n=1,2) ceramics." American Institite of Physics, 2009. http://hdl.handle.net/2237/12629.

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Chettaoui, Azza. "Croissance d'hétérostructures III-V sur des couches tampons de SrTiO3/Silicium." Phd thesis, Ecole Centrale de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-00967056.

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Les semiconducteurs III-V ayant des propriétés électroniques et optiques très intéressantes, leur intégration sur Si permettrait la combinaison de fonctionnalités variées sur la même puce, une solution potentielle aux obstacles affrontés par les composants CMOS. Les travaux pionniers de McKee et al ont démontré que le SrTiO3 (STO) peut être directement épitaxié sur Si par EJM (Epitaxie par Jets Moléculaires). Plus tard, une équipe de Motorola a montré qu'il était possible d'épitaxier des couches minces de GaAs sur des templates de STO/Si, ouvrant une voie nouvelle pour l'intégration monolithiq
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Waller, Gordon Henry. "Template Directed Growth of Nb doped SrTiO3 using Pulsed Laser Deposition." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/32723.

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Oxide materials display a wide range of physical properties. Recently, doped complex oxides have drawn considerable attention for various applications including thermoelectrics. Doped complex oxide materials have high Seebeck coefficients (S) and electrical conductivities (o) comparable to other doped semiconductors but low thermoelectric figure of merit ZT values due to their poor thermal conductivities. For example, niobium doped strontium titanate (SrNbxTi1-xO3 or simply Nb:STO) has a power factor comparable to that of bismuth telluride. Semiconductor nanostructures have demonstrated
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Kok, Dirk Johannes. "Influence of the growth conditions on the optical properties of SrTiO3." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2017. http://dx.doi.org/10.18452/17722.

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Strontiumtitanat (SrTiO3) ist ein wichtiges Substratmaterial für die Epitaxie und essenziel für fast alle bekannten oxidbasierten zweidimensionalen Elektronengassysteme. Diese Systeme haben viele mögliche Anwendungen, sind aber anfällig für Versetzungen im Substrat, weswegen das volle Potential mit den kommerziell verfügbaren Kristallen nicht erreicht werden kann. Um die Qualität zu erhöhen, müssen bessere Züchtungsmethoden gefunden werden wozu Verständnis der temperaturabhängigen Materialeigenschaften unerlässlich ist. Für viele Oxide können sehr gute Kristalle mit der Czochralski Methode he
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Alarab, Fatima. "Structure Électronique Des Couches Minces SrTiO3 Dopés avec Éléments Métalliques de Transition 3d." Thesis, CY Cergy Paris Université, 2020. http://www.theses.fr/2020CYUN1076.

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Les divers propriétés physiques des oxydes de métaux de transitions font d’eux de bons candidats pour de potentiels nouvelles applications industrielles, et plus précisement dans de nouvelles productions photovoltaiques. Concrètement, les riches propriétés électroniques fondamentales proviennent de fortes interactions de Coulomb au sein des électrons du système. La compréhension de tels effets corrélés continue un défit pour la physique du solide moderne, ce qui signifie qu’une combinaison des faces expérimentale et théorique de la recherche est essentielle pour progrésser dans ce domaine. Les
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Benthem, Klaus van. "Electron microscopic investigations of the bonding behaviour of metals on SrTiO3 substrates." Stuttgart : Max-Planck-Inst. für Metallforschung, 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965395014.

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39

Hui, Shiqiang. "Evaluation of yttrium-doped SrTiO3 as a solid oxide fuel cell anode /." *McMaster only, 2001.

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40

Riedl, Thomas. "La0,7Sr0,3MnO3-Dünnschichten auf SrTiO3 (0 0 1)-Substrat: Struktur und Mn-Wertigkeit." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1211277073076-72652.

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Die vorliegende Arbeit untersucht Struktur und Mn-Wertigkeit von La0,7Sr0,3MnO3 (LSMO)/SrTiO3 (STO)-Dünnschichten, die mit außeraxialer gepulster Laserdeposition auf STO(0 0 1)-Substrat abgeschieden wurden. Aufgrund der hohen Spinpolarisation der Ladungsträger und der hohen Curie-Temperatur von LSMO sowie der geringen Gitterfehlpassung zwischen LSMO und STO erscheinen solche Dünnschichtsysteme interessant für magnetoresistive elektronische Bauelemente wie LSMO/STO/LSMO-Tunnelkontakte. Da das mit steigender Temperatur rasch abnehmende Magnetwiderstandsverhältnis derartiger Tunnelkontakte vor al
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41

Wicklein, Sebastian [Verfasser]. "Defect Engineering of SrTiO3 thin films for resistive switching applications / Sebastian Wicklein." Kiel : Universitätsbibliothek Kiel, 2014. http://d-nb.info/1054635986/34.

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42

Souza, James Alves de. "Simulações por dinâmica molecular de compostos do tipo ABO3 (SrTiO3 e CaTiO3)." Universidade Federal de São Carlos, 2009. https://repositorio.ufscar.br/handle/ufscar/5016.

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Made available in DSpace on 2016-06-02T20:16:45Z (GMT). No. of bitstreams: 1 2261.pdf: 6647837 bytes, checksum: 5f3d49f4f65a3ec465ca7904f635b5f9 (MD5) Previous issue date: 2009-02-26<br>Universidade Federal de Minas Gerais<br>Using the classical molecular dynamics simulations, Perovskites systems composed by oxides (ABO3), in particular SrTiO3 and CaTiO3, were performed. The titanates are easily prepared as polycrystalline ceramics; chemically and mechanically stable they can be characterized in various temperature and pressure conditions. These provide us reliable experimental results for c
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43

Berktold, René [Verfasser], and Jochen [Akademischer Betreuer] Mannhart. "Kapazitätsmessungen an Feldeffekttransistoren auf LaAlO3-SrTiO3-Basis / René Berktold ; Betreuer: Jochen Mannhart." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2017. http://d-nb.info/113823477X/34.

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44

Lupetin, Piero [Verfasser], and Joachim [Akademischer Betreuer] Maier. "Charge carrier defect chemistry of nanoscopic SrTiO3 / Piero Lupetin. Betreuer: Joachim Maier." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2012. http://d-nb.info/1024490726/34.

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45

Thiemann, Markus [Verfasser], and Martin [Akademischer Betreuer] Dressel. "Microwave investigations on superconducting Nb-doped SrTiO3 / Markus Thiemann ; Betreuer: Martin Dressel." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2018. http://d-nb.info/1179185277/34.

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46

Zschornak, Matthias. "Defect-induced local electronic structure modifications within the system SrO - SrTiO3 - TiO2." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2015. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-169703.

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Owing to their versatile orbital character with both local and highly dispersive degrees of freedom, transition metal oxides span the range of ionic, covalent and metallic bonding. They exhibit a vast diversity of electronic phenomena such as high dielectric, piezoelectric, pyroelectric, ferroelectric, magnetic, multiferroic, catalytic, redox, and superconductive properties. The nature of these properties arises from sensitive details in the electronic structure, e.g. orbital mixing and orbital hybridization, due to non-stoichiometry, atomic displacements, broken symmetries etc., and their cou
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47

Hassen, Emeline. "Elaboration de jonctions tunnel magnétiques à barrière SrTiO3 pour application bas RA." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00845676.

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Ce travail de thèse porte sur l'élaboration et la caractérisation de jonctions tunnel magnétiques (JTM) polycristallines à barrière d'oxyde de titane de strontium, SrTiO3, qui se situe parmi les nouvelles barrières tunnel aux bandes interdites les plus étroites, recensées par la littérature. De telles barrières pourraient répondre à un besoin applicatif crucial : avoir un produit résistance x surface, RA, plus faible dans les JTM, ou à son corollaire, avoir une épaisseur de barrière plus forte à RA égal tout en conservant une magnétorésistance tunnel, TMR, élevée. De précédents travaux ont mon
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48

Kohlberger, Daniel Kai [Verfasser]. "Tieftemperatur-Rasterelektronenmikroskopie an supraleitenden Bauelementen und LaAlO3/SrTiO3-Grenzflächen / Daniel Kai Kohlberger." Tübingen : Universitätsbibliothek Tübingen, 2020. http://d-nb.info/1222510316/34.

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49

Beringer, Thomas [Verfasser]. "Herstellung und Untersuchung von Heterostrukturen aus Graphen und LaAlO3/SrTiO3 / Thomas Beringer." München : Verlag Dr. Hut, 2014. http://d-nb.info/105828505X/34.

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50

Estandía, Rodríguez Saúl. "Nanoscale Study of Epitaxial Ferroelectric Hf0.5Zr0.5O2 Thin Films and BaTiO3/SrTiO3 Superlattices." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/673208.

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La ferroelectricitat es una propiedat functional que trova aplicacions en dispositius microelectronics com les memories no volatils. En aquesta tesi se han estudit les propiedats ferroelectriques de capes primes nanométriques y supexarxes combinant técniques de caracterizació macroscópiques y nanoscópiques. En primer lloc, se ha estudiat la configuració de dominis ferroelectrics de BaTiO3 en supexarxes de diferents periods (gruix de les capes) utilitzant microscopia electronica en transmissió (STEM). Se ha observat una fort dependencia amb el periodi, con una distorsió polar decreixent per a p
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