Hits 1 - 50 from 220 Results

  • Zhang, Haiwu; Ramadan, Amr. H. H.; De Souza, Roger A.
    Atomistic simulations of ion migration in sodium bismuth titanate (NBT) materials: towards superior oxide-ion conductors
    Journal of materials chemistry / A, 6, 19, 9116-9123 (2018)
    [DOI: 10.1039/C8TA02545B]
  • Koettgen, Julius; Grieshammer, Steffen; Hein, Philipp; Grope, Benjamin O. H.; Nakayama, Masanobu; Martin, Manfred
    Understanding the ionic conductivity maximum in doped ceria: trapping and blocking
    Physical chemistry, chemical physics, 20, 21, 14291 - 14321 (2018)
    [DOI: 10.1039/C7CP08535D]
  • Kumar, Nitish; Patterson, Eric A.; Frömling, Till; Gorzkowski, Edward P.; Eschbach, Peter; Love, Ian; Müller, Michael Patrick; De Souza, Roger A.; Tucker, Julie; Reese, Steven R.; Cann, David P.
    Defect mechanisms in BaTiO 3 -Bi M O 3 ceramics
    Journal of the American Ceramic Society, 101, 6, 2376 - 2390 (2018)
    [DOI: 10.1111/jace.15403]
  • Shahi, Hamid Reza
    Multiphysik-Simulation der Transportprozesse in Sauerstoffpermeatoren mit ungeträgerten und geträgerten Hochtemperaturmembranen
  • Dąbrowa, Juliusz; Stygar, Mirosław; Mikuła, Andrzej; Knapik, Arkadiusz; Mroczka, Krzysztof; Tejchman, Waldemar; Danielewski, Marek; Martin, Manfred
    Synthesis and microstructure of the (Co,Cr,Fe,Mn,Ni) 3 O 4 high entropy oxide characterized by spinel structure
    Materials letters, 216, 32 - 36 (2018)
    [DOI: 10.1016/j.matlet.2017.12.148]
  • Mueller, Michael; de Souza, Roger
    SIMS study of oxygen diffusion in monoclinic HfO 2
    Applied physics letters, 112, 5, 051908 - (2018)
    [DOI: 10.1063/1.5020370]
  • Persoon, Emma Sophie
    Keramische Sauerstoffmembranen in 4-End-Oxyfuel Prozessen
  • Köttgen, Julius Rütger; Schmidt, Peter C.; Bučko, Tomáš; Martin, Manfred
    Ab initio calculation of the migration free energy of oxygen diffusion in pure and samarium-doped ceria
    Physical review / B, 97, 2, 024305 (2018)
    [DOI: 10.1103/PhysRevB.97.024305]
  • Gries, Ute; Schraknepper, Henning; Skaja, K.; Gunkel, Felix; Hoffmann-Eifert, S.; Waser, Rainer; de Souza, Roger
    A SIMS study of cation and anion diffusion in tantalum oxide
    Physical chemistry, chemical physics : PCCP, 2018, 20, 989-996 (2018)
    [DOI: 10.1039/C7CP07441G]
  • Beschnitt, Stefan
    Kationendiffusion in Cer(IV)-Oxid
  • Witte, Wolfram; de Souza, Roger; Martin, Manfred; Eicke, Axel; Hariskos, Dimitrios
    Deuterium Markers in CdS and Zn(O,S) Buffer Layers Deposited by Solution Growth for Cu(In,Ga)Se 2 Thin-Film Solar Cells
    Physica status solidi / Rapid research letters, 11, 12, 1700288 (2017)
    [DOI: 10.1002/pssr.201700288]
  • Zurhelle, Alexander; Tong, Xiaorui; Klein, Andreas; Mebane, David S.; de Souza, Roger
    A Space-Charge Treatment of the Increased Concentration of Reactive Species at the Surface of a Ceria Solid Solution
    Angewandte Chemie / International edition, 56, 46, 14516-14520 (2017)
    [DOI: 10.1002/anie.201708118]
  • Durmus, Yasin Emre; Jakobi, Simon; Beuse, Thomas; Aslanbas, Özgür; Tempel, Hermann; Hausen, Florian; de Haart, Lambertus G. J.; Ein-Eli, Yair; Eichel, Rüdiger-Albert; Kungl, Hans
    Influence of Dopant Type and Orientation of Silicon Anodes on Performance, Efficiency and Corrosion of Silicon-Air Cells with EMIm(HF)2.3F Electrolyte
    Journal of the Electrochemical Society, 164, 12, A2310-A2320 (2017)
    [DOI: 10.1149/2.0301712jes]
  • Kura, Chiharu; Kunisada, Yuji; Tsuji, Etsushi; Zhu, Chunyu; Habazaki, Hiroki; Nagata, Shinji; Müller, Michael Patrick; de Souza, Roger; Aoki, Yoshitaka
    Hydrogen separation by nanocrystalline titanium nitride membranes with high hydride ion conductivity
    Nature energy, 2, 10, 786-794 (2017)
    [DOI: 10.1038/s41560-017-0002-2]
  • Ramasamy, M.; Persoon, Emma; Baumann, S.; Schröder, M.; Schulze-Küppers, Falk; Görtz, Dieter; Bhave, R.; Bram, M.; Meulenberg, W. A.
    Structural and chemical stability of high performance Ce0.8Gd0.2O2-δ - FeCo2O4 dual phase oxygen transport membranes
    Journal of membrane science, 544, 278-286 (2017)
    [DOI: 10.1016/j.memsci.2017.09.011]
  • de Souza, Roger
    Limits to the rate of oxygen transport in mixed-conducting oxides
    Journal of materials chemistry / A, 5, 38, 20334-20350 (2017)
    [DOI: 10.1039/C7TA04266C]
  • Salehi, M.; Søgaard, M.; Esposito, V.; Foghmoes, S. P. V.; Persoon, E. S.; Schroeder, M.; Hendriksen, P. V.
    Oxygen permeation and stability study of (La 0.6 Ca 0.4 ) 0.98 (Co 0.8 Fe 0.2 )O 3-δ membranes
    Journal of membrane science, 542, 245-253 (2017)
    [DOI: 10.1016/j.memsci.2017.07.050]
  • Grieshammer, Steffen
    Defect Interactions in the CeO 2 -ZrO 2 -Y 2 O 3 Solid Solution
    The journal of physical chemistry / C, 121, 28, 15078-15084 (2017)
    [DOI: 10.1021/acs.jpcc.7b03507]
  • Beschnitt, Stefan; de Souza, Roger
    Impurity diffusion of Hf and Zr in Gd-doped CeO 2
    Solid state ionics, 305, 23-29 (2017)
    [DOI: 10.1016/j.ssi.2017.03.029]
  • Genreith-Schriever, Annalena Roswitha
    Simulation studies of oxygen-ion transport in ceria
  • Grieshammer, Steffen; Martin, Manfred
    Influence of defect interactions on the free energy of reduction in pure and doped ceria
    Journal of materials chemistry / A, 5, 19, 9241-9249 (2017)
    [DOI: 10.1039/C7TA00056A]
  • Heiden, Alexandra von der
    Einfluss von Struktur und Stöchiometrie auf die Sauerstoffdiffusion und Leitfähigkeit in amorphem Galliumoxid
  • Schie, Marcel; Müller, Michael P.; Salinga, Martin; Waser, Rainer; de Souza, Roger
    Ion migration in crystalline and amorphous HfO X
    The journal of chemical physics, 146, 9, 094508 (2017)
    [DOI: 10.1063/1.4977453]
  • Köttgen, Julius Rütger; Zacherle, Tobias; Grieshammer, Steffen; Martin, Manfred
    Ab initio calculation of the attempt frequency of oxygen diffusion in pure and samarium doped ceria
    Physical chemistry, chemical physics : PCCP, 19, 15, 9957-9973 (2017)
    [DOI: 10.1039/C6CP04802A]
  • De Souza, Roger A.; Amezawa, Koji; Burriel, Mónica; Chueh, William; Kelder, Erik M.
    Special Issue for the E-MRS Spring Meeting Symposium D on Solid State Ionics
    Solid state ionics, 299, SI, 1-1 (2017)
    [DOI: 10.1016/j.ssi.2016.12.018]
  • Falkenstein, Andreas
    Transport kinetics of hydrogen permeable lanthanum tungstate
  • Köttgen, Julius Rütger
    The relation between defect interactions, local structure and oxygen ion conductivity in the bulk of doped ceria
  • Schraknepper, Henning; Bäumer, Christoph; Gunkel, Felix; Dittmann, Regina; de Souza, Roger
    Pulsed laser deposition of SrRuO 3 thin-films: The role of the pulse repetition rate
    APL materials, 4, 12, 126109 (2016)
    [DOI: 10.1063/1.4972996]
  • Genreith-Schriever, Annalena R.; de Souza, Roger
    Field-enhanced ion transport in solids: Reexamination with molecular dynamics simulations
    Physical review / B covering condensed matter and materials physics, 94, 22, 224304 (2016)
    [DOI: 10.1103/PhysRevB.94.224304]
  • Funck, Carsten Marco; Schmidt, Peter; Martin, Manfred; Menzel, Stephan
    Origin and Influence of the Electronic Current in thin Oxide Resistive Switching Layers
    Bunsen Kolloquium Defects and Diffusion Solids Aachen 2016-11-10 - 2016-11-11 (2016)
  • Braun, Efrem; Zurhelle, Alexander; Thijssen, Wouter; Schnell, Sondre K.; Lin, Li-Chiang; Kim, Jihan; Thompson, Joshua A.; Smit, Berend
    High-throughput computational screening of nanoporous adsorbents for CO2 capture from natural gas
    Molecular systems design & engineering, 1, 2, 175-188 (2016)
    [DOI: 10.1039/C6ME00043F]
  • Ramadan, Amr Hazem Helmy; de Souza, Roger
    Atomistic simulations of symmetrical low-angle [100] (01/) tilt boundaries in SrTiO3
    Acta materialia, 118, 286-295 (2016)
    [DOI: 10.1016/j.actamat.2016.07.035]
  • Teusner, Markus; De Souza, R. A.; Krause, H.; Ebbinghaus, S. G.; Martin, M.
    Oxygen transport in undoped and doped mayenite
    Solid state ionics, 284, 25-27 (2016)
    [DOI: 10.1016/j.ssi.2015.11.024]
  • Ramadan, Amr Hazem Helmy
    Simulation studies of extended defects in the model system of the functional oxide strontium titanate
  • Gunkel, Felix; Waser, Rainer; Ramadan, Amr Hazem Helmy; De Souza, Roger A.; Hoffmann-Eifert, Susanne; Dittmann, Regina
    Space charges and defect concentration profiles at complex oxide interfaces
    Physical review / B covering condensed matter and materials physics, 93, 24, 245431 (2016)
    [DOI: 10.1103/PhysRevB.93.245431]
  • Grieshammer, Steffen; Nakayama, Masanobu; Martin, Manfred
    Association of defects in doped non-stoichiometric ceria from first principles
    Physical chemistry, chemical physics : PCCP, 18, 5, 3804-3811 (2016)
    [DOI: 10.1039/C5CP07537H]
  • Kura, Chiharu; Aoki, Yoshitaka; Tsuji, Etsushi; Habazaki, Hiroki; Martin, Manfred
    Fabrication of a resistive switching gallium oxide thin film with a tailored gallium valence state and oxygen deficiency by rf cosputtering process
    RSC Advances, 6, 11, 8964-8970 (2016)
    [DOI: 10.1039/C5RA21160C]
  • Ganguly, Bichitra Nandi; Dutta, Sreetama; Roy, Soma; Röder, Jens; Johnston, Karl; Martin, Manfred
    Investigation on structural aspects of ZnO nano-crystal using radio-active ion beam and PAC
    Nuclear instruments & methods in physics research / B, 362, 103 - 109 (2015)
    [DOI: 10.1016/j.nimb.2015.08.098]
  • Mebane, David S.; De Souza, Roger A.
    A generalised space-charge theory for extended defects in oxygen-ion conducting electrolytes: from dilute to concentrated solid solutions
    Energy & environmental science, 8, 10, 2935-2940 (2015)
    [DOI: 10.1039/C5EE02060C]
  • Beckers, Thomas; Nagarajan, Lakshmi; Martin, Manfred
    Radiotracer diffusion of 114mIn in Cu(In,Ga)Se2 thin films
    Thin solid films, 592, 118-123 (2015)
    [DOI: 10.1016/j.tsf.2015.09.001]
  • De Souza, Roger A.
    Oxygen Diffusion in SrTiO 3 and Related Perovskite Oxides
    Advanced functional materials, 25, 40, 6326-6342 (2015)
    [DOI: 10.1002/adfm.201500827]
  • Beschnitt, Stefan; Zacherle, Tobias; De Souza, Roger A.
    Computational Study of Cation Diffusion in Ceria
    The journal of physical chemistry / C, 119, 49, 27307-27315 (2015)
    [DOI: 10.1021/acs.jpcc.5b09499]
  • Ramadan, Amr H. H.; Hesselmann, Linda; De Souza, Roger A.
    The phase stability of Ca2TiO4 and related Ruddlesden–Popper phases
    Journal of physics and chemistry of solids, 86, 90-94 (2015)
    [DOI: 10.1016/j.jpcs.2015.06.022]
  • Grope, Benjamin O. H.
    Die Entwicklung eines allgemeinen Kinetik-Monte-Carlo-Frameworks zur Diffusion in Festkörpern
  • Metlenko, Veronika
    Sauerstofftransporteigenschaften von SrTiO3-basierten Verbindungen mit Bikristallinen- und Dünnschichtgeometrien
  • The, De-Niang
    Identifizierung, Charakterisierung und Interpretation der Zelldegradation von Hochtemperatur-Elektrolysezellen im Langzeitbetrieb
  • Kessel, Markus; De Souza, Roger A.; Martin, Manfred
    Oxygen diffusion in single crystal barium titanate
    Physical chemistry, chemical physics, 17, 19, 12587-12597 (2015)
    [DOI: 10.1039/C5CP01187F]
  • Teusner, Markus; De Souza, Roger; Krause, Holger; Ebbinghaus, Stefan G.; Belghoul, Badreddine; Martin, Manfred
    Oxygen Diffusion in Mayenite
    The journal of physical chemistry , 119, 18, 9721-9727 (2015)
    [DOI: 10.1021/jp512863u]
  • Falkenstein, Andreas; Mueller, David N.; De Souza, Roger A.; Martin, Manfred
    Chemical relaxation experiments on mixed conducting oxides with large stoichiometry deviations
    Solid state ionics, 280, 66-73 (2015)
    [DOI: 10.1016/j.ssi.2015.07.023]
  • Rupp, Jennifer L. M.; De Souza, Roger A.; Lubomirsky, Igor; Preis, Wolfgang; Kelder, Erik M.
    EMRS 2014 Solid State Ionics issue
    Solid state ionics, 273, 1-1 (2015)
    [DOI: 10.1016/j.ssi.2015.03.031]