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Dissertations / Theses on the topic 'Double perovskites'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Saines, Paul James. "Structural Studies of Lanthanide Double Perovskites." Thesis, The University of Sydney, 2008. http://hdl.handle.net/2123/3939.

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This project focuses on the examination of the structures of lanthanide containing double perovskites of the type Ba2LnB'O6-d (Ln = lanthanide or Y3+ and B' = Nb5+, Ta5+, Sb5+ and/or Sn4+) using synchrotron X-ray and neutron powder diffraction. The first part of this project examined the relative stability of R3 rhombohedral and I4/m tetragonal structures as the intermediate phase adopted by the series Ba2LnB'O6 (Ln = lanthanide (III) or Y3+ and B' = Nb5+, Ta5+ or Sb5+). It was found that I4/m tetragonal symmetry was favoured when B' was a transition metal with a small number of d electrons, s

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2

Saines, Paul James. "Structural Studies of Lanthanide Double Perovskites." Faculty of Science. School of Chemistry, 2008. http://hdl.handle.net/2123/3939.

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Doctor of Philosophy(PhD)<br>This project focuses on the examination of the structures of lanthanide containing double perovskites of the type Ba2LnB'O6-d (Ln = lanthanide or Y3+ and B' = Nb5+, Ta5+, Sb5+ and/or Sn4+) using synchrotron X-ray and neutron powder diffraction. The first part of this project examined the relative stability of R3 rhombohedral and I4/m tetragonal structures as the intermediate phase adopted by the series Ba2LnB'O6 (Ln = lanthanide (III) or Y3+ and B' = Nb5+, Ta5+ or Sb5+). It was found that I4/m tetragonal symmetry was favoured when B' was a transition metal with a s

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3

Sher, Falak. "Synthesis and properties of magnetoresistive double perovskites." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614834.

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4

McClure, Eric Thomas. "Synthesis and Characterization of New Visible Light Absorbing, Lead-Free Halide Double Perovskite Semiconductors." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492431322941272.

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5

Wallace, Thomas Kerr. "The synthesis and characterisation of novel molybdenum double perovskites." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=225337.

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Interest in the molybdenum double perovskites has increased since the discovery of high temperature, low field magnetresistance in Sr2FeMoO6. Molybdenum double perovskites of the form Ba2LnMoO6 (where Ln = Sm, Sm0.5Eu0.5, Eu, Gd, Pr) as well as Sr2ScMoO6 have been synthesized by solid-state reactions up to 1200°C. Laboratory X-ray diffraction, variable temperature neutron and synchrotron X-ray diffraction as well as DC-SQUID magnetometry have been employed, in order to investigate the intricate relationship between spin, lattice and orbital degrees of freedom within these compounds. A variable

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6

Dass, Ronald Ian. "Magnetoresistance and properties of half-metallic, ferromagnetic double perovskites /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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7

Erten, Onur. "Electronic and Magnetic Properties of Double Perovskites and Oxide Interfaces." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1376496346.

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8

Barbosa, Rafael de Lima. "Propriedades dielétricas intrínsecas de perovskitas duplas RE2CoMnO6 (RE = íon terra-rara)." reponame:Repositório Institucional da UFC, 2017. http://www.repositorio.ufc.br/handle/riufc/25008.

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BARBOSA, R. de L. Propriedades dielétricas intrínsecas de perovskitas duplas RE2CoMnO6 (RE = íon terra-rara). 2017. 69 f. Dissertação (Mestrado em Física) – Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2017.<br>Submitted by Pós-Graduação em Física (posgrad@fisica.ufc.br) on 2017-08-23T16:49:17Z No. of bitstreams: 1 2017_dis_rlbarbosa.pdf: 2986314 bytes, checksum: fa8e3135695dd91e18a33451cfe520b7 (MD5)<br>Approved for entry into archive by Giordana Silva (giordana.nascimento@gmail.com) on 2017-08-23T18:16:47Z (GMT) No. of bitstreams: 1 2017_dis_rlbarbosa.pdf: 2986314 bytes,

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9

Mishra, Rohan. "First Principles Study of Double Perovskites and Group III-V Compounds." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1345489862.

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10

Ball, Molly R. "First Principles Study of Electronic and Magnetic Structures in Double Perovskites." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483702986122186.

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11

LIU, FANG. "Structural and optical properties of highly emitting lead-free double perovskites." Doctoral thesis, Università degli Studi di Cagliari, 2022. http://hdl.handle.net/11584/333072.

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This thesis introduces lead-free double perovskite compounds with broad-band white light emission and the potential application of various doped and alloyed double perovskites in the illumination field. In addition, the mechanism of highly efficient warm white light emission is also studied. Double perovskites are promising lead-free perovskite materials which alternatively replace the divalent Pb cations in lead-halide perovskite with a combination of a monovalent and trivalent cation. They exhibit excellent stability under moisture, heat and light. In this work, halide double perovskite mate

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12

Janczak, Julia. "Theory of Spectral Function and Optical Conductivity for Half-Metallic Double Perovskites." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354713689.

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13

Dixit, Manisha. "Structure-Property Correlations in Double Perovskite Systems." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366345489.

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14

Soliz, Jennifer Rose. "The Interplay of the Chemical, Orbital and Spin Disorder in Ca_2-xLa_xMnRuO₆ Perovskites." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253094110.

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15

Shabadi, Vikas [Verfasser], Lambert [Akademischer Betreuer] Alff, and Wolfgang [Akademischer Betreuer] Donner. "Epitaxial engineering of ferrimagnetic double perovskites / Vikas Shabadi ; Lambert Alff, Wolfgang Donner." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2017. http://d-nb.info/1135386048/34.

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16

Ricciardo, Rebecca Ann. "Chemical, Magnetic, and Orbital Order of Polycrystalline and Thin film Double Perovskites." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250277883.

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17

Warren, Matthew Timothy. "Time-Domain Terahertz Studies of Strongly Correlated GeV4S8 and Osmate Double-Perovskites." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1512066420271281.

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18

Tran, Phuong Minh. "Investigating the Relationship between Structure and Magnetic Ground States of 5d Double Perovskites." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1577937896742109.

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19

Roknuzzaman, Md. "Ab initio atomistic insights into lead-free perovskites for photovoltaics and optoelectronics." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/198196/1/Md_Roknuzzaman_Thesis.pdf.

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This project focuses on the development of advanced non-toxic materials for the applications in energy generation and consumption devices like solar cells, light-emitting diodes, lasers and photodetectors. A first-principles density functional theory calculations are conducted to investigate the properties of a number of inorganic, hybrid and double perovskites compounds to predict their potential for applications in photovoltaics and optoelectronics. The achieved outcomes provide a better understanding of the structural, electronic, optical and mechanical properties of a group of potential co

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20

Russell, David D. "Design, synthesis, crystal structure and magnetic properties of novel osmium-based B-site ordered double perovskites." Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10011271.

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<p>Transition metal oxides (TMOs) with face centered cubic arrangement of magnetic ions are composed of triangular sub-lattices. When antiferromagnetic (AFM) interactions of the same strengths between all three pathways in triangular settings are in place, spin constraints cannot be fulfilled simultaneously and the system undergoes geometric magnetic frustration (GMF). The purpose of the work presented in this thesis is to better understand the criteria for a system to undergo GMF. To achieve this, the novel B-site ordered double perovskites Ca2ScOsO6 and Ca2.2Mg0.8OsO6 were synthesized in

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21

Gao, Haitao [Verfasser]. "Substitution effects and electronic structure studies in double perovskites : how crystal structure influences physical properties / Haitao Gao." Mainz : Universitätsbibliothek Mainz, 2014. http://d-nb.info/1047379112/34.

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22

Barnes, Paris W. "Exploring structural changes and distortions in quaternary perovskites and defect pyrochlores using powder diffraction techniques." Columbus, Ohio : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1064346592.

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Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xxvi, 255 p.; also includes graphics. Includes abstract and vita. Advisor: Patrick M. Woodward, Dept. of Chemistry. Includes bibliographical references (p. 221-228).

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23

Burrows, Oliver James. "Structural and magnetic properties of the geometrically frustrated 3d and 5d s = ½ Double Perovskites Sr₂CuWO₆, Ba₂YWO₆ and LaSrMgWO₆." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/22069.

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Double perovskites with a single s = ½ magnetic ion and rocksalt order can show geometric frustration, due to arrangement of electron spins such that they cannot satisfy all nearest-neighbour antiferromagnetic interactions simultaneously. This can give rise to exotic magnetic states at low temperature. Compounds with unpaired 4d and 5d electrons have in this respect been studied far less than 3d compounds. Here, results of studies on the compounds Sr2CuWO6, Ba2YWO6 and LaSrMgWO6 are presented. The synthesis of the previously reported compound Ba2Y1WO6 (W5 +, 5d1) was attempted by many methods,

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24

Martins, Júnior Antonio Luiz. "FÔNONS ÓPTICOS DE PEROVSKITAS DUPLAS Ca₃Mn₂B O₉ (B = W e Nb)." Universidade Federal do Maranhão, 2013. http://tedebc.ufma.br:8080/jspui/handle/tede/746.

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Made available in DSpace on 2016-08-18T18:19:32Z (GMT). No. of bitstreams: 1 Dissertacao de Antonio Luiz Martins Junior.pdf: 2188938 bytes, checksum: 2158404e55575579b79bcf24267df24b (MD5) Previous issue date: 2013-10-30<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>In recent years, researchers and scientists has been devoted more to the study of inorganic materials, in particular the oxides known as perovskites, because its technological use. The analysis of their properties have been made by various techniques, among these we can mention the Raman spectroscopy and inf

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25

Azad, Abul Kamal. "Synthesis, structure, and magnetic properties of double perovskites of the type A₂MnBO₆ and A₂FeBO₆ : (A=Ca, Sr, Ba, La; B=W, Mo, Cr) /." Göteborg : Göteborg university, 2004. http://catalogue.bnf.fr/ark:/12148/cb401256467.

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26

Silva, Antonio Vinnie dos Santos. "Structural, vibrational and morphological properties of La2CoMnO6 multiferroics films." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17901.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>FundaÃÃo de Amparo Ã Pesquisa e ao Desenvolvimento CientÃfico e TecnolÃgico do MaranhÃo<br>CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Perovskitas duplas com fÃrmula na forma A2BBâO6 (A = La, Sr, Ca, B/Bâ = Co/Mn ou Fe/Mo) sÃo materiais multiferrÃicos de grande interesse na ciÃncia devido Ãs notÃveis propriedades, que permitem aplicaÃÃes em capacitores e em memÃrias, por exemplo. AlÃm disso, mudanÃas estruturais sÃo observadas entre a form

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27

Tseggai, Mehreteab. "Synthesis, Nuclear Structure, and Magnetic Properties of some Perovskite Oxides." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4826.

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28

Bufaiçal, Leandro Félix de Sousa. "Investigação das propriedades estruturais, eletrônicas e magnéticas dos óxidos com estrutura perovskita dupla Ca2-xLaxFeIrO6." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/278507.

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Orientador: Pascoal Jose Giglio Pagliuso<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-10T19:13:39Z (GMT). No. of bitstreams: 1 Bufaical_LeandroFelixdeSousa_M.pdf: 1501359 bytes, checksum: 7c304c6377511ffd74495c952b919ec0 (MD5) Previous issue date: 2006<br>Resumo: Um grande número de óxidos de metais de transição se forma em estrutura perovskita simples ou em uma de suas variantes, e muitos deles apresentam propriedades físicas interessantes, como supercondutividade, magneto-resistência colossal e ferro

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29

Silva, Rosivaldo Xavier da. "Síntese e caracterização de perovskitas complexas multiferróicas com estrutura dupla ordenada." Universidade Federal do Maranhão, 2015. http://tedebc.ufma.br:8080/jspui/handle/tede/748.

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Made available in DSpace on 2016-08-18T18:44:20Z (GMT). No. of bitstreams: 1 Tese-RosivaldoXavierSilva.pdf: 12741226 bytes, checksum: 7bc7743bfa3e2f958b913f2d67969531 (MD5) Previous issue date: 2015-12-11<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The RE2CoMnO6 (RE = La e Y) and Gd(Co0.5Mn0.5)O3 samples were obtained via modified Pechini method (MPM). Raman spectroscopy (RS), Fourier transform infrared (FTIR) spectroscopy, X ray powder diffraction, X ray photoelectron spectroscopy (XPS), SQUID and scanning electron microscopy (SEM) were used to characterize the sampl

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30

Bardelli, Fabrizio. "Etude des propriétés structurelles locales des matériaux magnétorésistifs." Phd thesis, Grenoble 1, 2006. http://www.theses.fr/2006GRE10224.

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L'objectif de cette étude est de donner une caractérisation complète de la structure locale de deux classes de composés : les manganites de lanthane droguées avec du sodium et les doubles perovskites de ferro-molybdène droguées avec du tungstène. Les deux classes se comportent, en général comme de conducteurs dans leur phase ferromagnétique et, suivant variations de température ou de dopage, ils subissent une transition métal-isolant à laquelle il faut associer une transition ferromagnétique-paramagnétique(antiferromagnétique). En effet, il est tout à fait accepté que aussi bien dans les manga

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31

Morrow, Ryan. "Competing Superexchange Interactions in Double Perovskite Osmates." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429787669.

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32

Coutrim, Leandro Tolentino. "Propriedades estruturais, eletrônicas e magnéticas dos óxidos La2−xCaxCoIrO6." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/4574.

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Submitted by Erika Demachki (erikademachki@gmail.com) on 2015-05-22T21:34:47Z No. of bitstreams: 2 Dissertação - Leandro Tolentino Coutrim - 2015.pdf: 2861900 bytes, checksum: 25e74c53b1811b169e93359d4ec98858 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)<br>Approved for entry into archive by Erika Demachki (erikademachki@gmail.com) on 2015-05-22T21:36:09Z (GMT) No. of bitstreams: 2 Dissertação - Leandro Tolentino Coutrim - 2015.pdf: 2861900 bytes, checksum: 25e74c53b1811b169e93359d4ec98858 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b8

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33

Bos, J. W. G. "Synthesis, structures and properties of new double perovskite oxides." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.596791.

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Double perovskite oxides have attracted much interest since the discovery of spin-polarized conduction and large low field magnetoresistances in Sr<sub>2</sub>FeMoO<sub>6</sub>. This behaviour exists to high temperatures, making Sr<sub>2</sub>FeMoO<sub>6</sub> and related materials candidates for application in data storage devices. This thesis describes the synthesis, structures and properties of some new double perovskite oxides. These can be divided into the (LaM)BNbO<sub>6</sub> (M = Ca, Sr, Ba; B = Mn, Co) and LaSrFeNbO<sub>6</sub> materials that have one magnetic transition metal (TM) c

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34

Moreira, Alessandro Ferreira Lisboa. "Espalhamento Raman em perovskitas duplas." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277693.

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Orientador: Eduardo Granado Monteiro da Silva<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-14T22:43:44Z (GMT). No. of bitstreams: 1 Moreira_AlessandroFerreiraLisboa_M.pdf: 8996770 bytes, checksum: 0836e45112c5212268c2e5514f1232a9 (MD5) Previous issue date: 2009<br>Resumo: Nesse trabalho foram realizados estudos em duas famílias de compostos de perovskitas duplas Ba2FeReO6 e S r2UO6 (B'= Co, Ni) por espectroscopia Raman e difração de raios-X com luz síncrotron. No primeiro composto há uma transição de u

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35

Asano, H., N. Koduka, K. Imaeda, M. Sugiyama, and M. Matsui. "Magnetic and junction properties of half-metallic double-perovskite thin films." IEEE, 2005. http://hdl.handle.net/2237/6775.

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36

Johnson, Alexanne Holcombe. "Growth and Characterization of Double Perovskite Buffer Materials for Thin Film Applications." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397479975.

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37

Garcia, Flores Ali Francisco. "Acoplamento spin-fonon em sistemas magneticamente frustrados." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277694.

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Orientador: Eduardo Granado Monteiro da Silva<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-09T10:44:24Z (GMT). No. of bitstreams: 1 GarciaFlores_AliFrancisco_D.pdf: 13566833 bytes, checksum: e4298b0e0c3ed24044ce44f96adc43dd (MD5) Previous issue date: 2007<br>Resumo: Nesta tese são investigados dois sistemas magneticamente frustrados, a série de compostos isolantes RMn2O5 (R = Eu, Bi, Dy) e o composto intermetálico GdAI3, além do material isolante não frustrado de perovskita dupla Sr2CoUO6. O estudo destes si

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38

Azimonte, Bottan Carla. "Sondando o acoplamento magnetoelástico e magnetoelétrico em novos materiais magnetoresistentes e multiferróicos através de interações dos raios-x com a matéria." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276976.

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Orientador: Eduardo Granado Monteiro da Silva<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-13T21:32:58Z (GMT). No. of bitstreams: 1 AzimonteBottan_Carla_D.pdf: 5780687 bytes, checksum: c105a917353cb055367bebe92b8875af (MD5) Previous issue date: 2009<br>Resumo: Nesta tese de doutorado empregamos a união de diferentes técnicas com intuito de estudar as correlações entre as propriedades magnéticas, elétricas e cristalinas em alguns óxidos de metais de transição de interesse atual. Dentre eles se encontram os co

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39

Qadri, Syed N. "Development of a double-layered perovskite as alternative anode material for high temperature steam electrolysis." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/5826.

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The research presented is based on alternative anode materials for high temperature steam electrolysis. The key to commercially viable renewable energy economy is based on energy storage of intermittent sources. Hydrogen is the preferred form of energy storage for solid oxide electrolysis cells. However, conventional anode material lanthanum strontium manganite (LSM), suffers from poor ionic conductivity, thus prohibiting much of the bulk electrode from providing an enhanced electrochemical performance. This study explores the use of a double-layered perovskite system with mixed electronic and

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40

Tassetti, Anna. "NMR investigation of spin and charge dynamics in the electron doped Dirac-Mott insulator Ba2Na1-xCaxOsO6 double Perovskite." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Materials which possess both strong spin orbit coupling and strong electron correlation reveal exceptional magnetic and conductive properties, such as the case of the transition metal oxide object of this study. In the present dissertation we use Nuclear Magnetic Resonance technique in order to study the effect of charge doping on the Dirac Mott insulator double perovskites Ba2Na1-xCaxOsO6. We analyse in depth the material characteristic relaxation time T1 and T2 as a function of doping and temperature to investigate the spin and charge dynamics of the system. The study has revealed an u

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41

Fisher, James C. II. "A Novel Fuel Cell Anode Catalyst, Perovskite LSCF: Compared in a Fuel Cell Anode and Tubular Reactor." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1152215855.

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42

Forino, Paola Caterina. "Nuclear magnetic resonance study of the electron doped Dirac-Mott Insulator double perovskite Ba2Na(1-x)CaxOsO6." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Osmium-based materials exhibit unconventional magnetism due to the interplay between spin orbit coupling and strong electronic correlations. In this thesis we investigate for the first time the effect of charge doping on the Dirac Mott insulator double perovskites Ba2Na(1-x)CaxOsO6 by using Nuclear Magnetic Resonance technique. We study in details the evolution of the magnetic phase diagram as a function of doping and applied magnetic field. The system rapidly evolves from a canted to a collinear antiferromagnetic ground state with a monotonic increase of the magnetic transition temperature

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43

Kluczny, Maksymilian. "Synthesis and Electrochemical Evaluation of Perovskite related oxide for Active Cathode for Solid Oxide Fuel Cells (SOFCs)." Thesis, KTH, Kemiteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223612.

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Solid oxide fuel cells are used as stationary power plants for electricity production. Despite having a very high efficiency of 90% they haven’t gained a world-wide commercial usage, due to their very high operating temperatures, and high production cost. However, there is a lot of ongoing research with the aim of developing intermediate-temperature solid oxide fuel cells (IT-SOFCs) that could operate at temperatures below 800°C. Cathodes are the most studied components of IT-SOFCs, since decreasing operating temperature results in slow oxygen reduction reaction(ORR) kinetics and large polariz

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44

Ardito, Fábio Machado 1984. "Medidas simultâneas de espectroscopia Raman e propriedades de trasnporte eletrônico." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277700.

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Orientadores: Eduardo Granado Monteiro da Silva, Juan Carlos Paredes Campoy<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-15T13:45:19Z (GMT). No. of bitstreams: 1 Ardito_FabioMachado1984-_M.pdf: 6352423 bytes, checksum: edd5885909fe50631ed33ee3dcd760ec (MD5) Previous issue date: 2010<br>Resumo: Espectroscopia Raman é uma ferramenta muito versátil e poderosa na investigação de mudanças de fase estruturais ou eletrônicas, principalmente quando aliada à possibilidade de se atingir altos campos magnéticos e

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Hauser, Adam J. "Unlocking the potential of half-metallic Sr₂FeMoO₆ thin films through controlled stoichiometry and double perovskite ordering." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1291048729.

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Lucy, Jeremy M. "Exploration and Engineering of Physical Properties in High-Quality Sr₂CrReO₆ Epitaxial Films." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1436888316.

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Pers, Paul. "Développement et optimisation de matériaux d’électrodes et d’électrolytes, pour cellules PCFC." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS193/document.

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Ce travail de thèse s'inscrit dans le cadre du développement des piles à combustible à céramique conductrice protonique (PCFC) anode support, opérant dans le domaine de température 400 – 600 °C. Une attention particulière a été portée sur la diminution des températures d'élaboration des composants constituants les piles. Les stratégies mises en œuvre pour l'élaboration des anodes et des couches minces électrolytiques à basse température ont été la nano-structuration et l'ajout d'additifs aidant au frittage. La réalisation de couche mince électrolytique a fait l'objet d‘un développement par pul

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Esser, Bryan David. "High Resolution Characterization of Magnetic Materials for Spintronic Applications." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524154928191728.

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Zuo, Peng. "Synthèses, études structurales et physiques de doubles pérovskites ordonnées NaLnCoWO6 : recherche de nouveaux composés multiferroïques basés sur la ferroélectricité hybride impropre." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI113/document.

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Ce travail porte sur la synthèse et la caractérisation de nouveaux matériaux multiferroïques basés sur le concept très récent de la Ferroélectricité Hybride Impropre.Deux classes de matériaux ont été envisagées : les oxydes de type Ruddlesden-Popper NaRMO4 (R=Y, La; M= Mn, Cr) et les doubles pérovskites ordonnées NaLnCoWO6 (Ln= Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Yb). Les essais de synthèse sur la première classe n’ont pas permis d’obtenir les composés visés. Pour la seconde classe, l’ensemble des composés ont pu être obtenus par synthèse par voie solide à haute température. Les com

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Євсєєва, М. В., Т. І. Панченко, M. V. Evseeva та T. I. Panchenko. "Гетероядерні (купрум, лантаноїд)вмісні ацетилацетонати як вихідні речовини для синтезу наноматеріалів". Thesis, ВНТУ, 2019. http://ir.lib.vntu.edu.ua//handle/123456789/24079.

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Синтезовано гетероядерні (купрум, лантаноїд)вмісні ацетилацетонати загальної формули CuLn(AA)5·nH2O (Ln(III) = La, Nd, Sm, Gd; НАА = Н3С–С(О)–СН2–С(О)–СН3); n = 1-4). Методом рентгенофазового аналізу встановлено, що продуктами їх піролізу є подвійні оксиди Ln2CuО4 (Ln = Lа, Nd, Sm, Gd) структури перовскіту<br>The synthesis of heteronuclear compounds (copper, lanthanide)-containing acetylacetonates of the general formula CuLn(AA)5·nH2O (Ln(III) = La, Nd, Sm, Gd; НАА = Н3С–С(О)–СН2–С(О)–СН3); n = 1–4). The method of X-ray diffraction analysis showed that the products of their pyrolysis are the d

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