Treffer 251 - 300 von 348 Ergebnissen

  • Avila-Paredes, Hugo J.; Zhao, Jinfeng; Wang, Shizhong; Pietrowski, Martha Joanna; De Souza, Roger; Reinholdt, Alexander; Munir, Zuhair A.; Martin, Manfred; Kim, Sangtae
    Protonic conductivity of nano-structured yttria-stabilized zirconia: dependence on grain size
    Journal of materials chemistry, 20, 6, 990-994 (2010)
    [DOI: 10.1039/b919100c]
  • Martin, Manfred; De Souza, Roger; Samuelis, Dominik; Börger, Alexander; Valov, Ilia; Becker, Klaus-Dieter; Janek, Jürgen; Schmidt, Peter; Nagarajan, Lakshmi
    Verfahren zur Erzeugung eines Leiter-Nichtleiter-Übergangs
  • De Souza, Roger
    The formation of equilibrium space-charge zones at grain boundaries in the perovskite oxide SrTiO3
    Physical chemistry, chemical physics : PCCP, 11, 43, 9939-9969 (2009)
    [DOI: 10.1039/b904100a]
  • De Souza, Roger; Martin, Manfred
    Probing Diffusion Kinetics with Secondary Ion Mass Spectrometry
    MRS bulletin, 34, 12, 907-914 (2009)
    [DOI: 10.1557/mrs2009.212]
  • Martin, Manfred; Dronskowski, Richard; Janek, Jürgen; Becker, Klaus-Dieter; Röhrens, Daniel; Brendt, Jochen; Lumey, Marck-Willem; Lakshmi, Nagarajan; Valov, Ilia; Börger, Alexander
    Thermodynamics, structure and kinetics in the system Ga-O-N
    Progress in Solid State Chemistry, 37, 2/3, 132-152 (2009)
    [DOI: 10.1016/j.progsolidstchem.2009.11.005]
  • Litzelman, Scott J.; De Souza, Roger; Butz, Benjamin; Tuller, Harry L.; Martin, Manfred; Gerthsen, Dagmar
    Heterogeneously doped nanocrystalline ceria films by grain boundary diffusion : impact on transport properties
    Journal of electroceramics, 22, 4, 405-415 (2009)
    [DOI: 10.1007/s10832-008-9445-y]
  • De Souza, Roger; Martin, Manfred
    An atomistic simulation study of oxygen-vacancy migration in perovskite electrolytes based on LaGaO3
    Monatshefte für Chemie = Chemical monthly, 140, 9, 1011-1015 (2009)
    [DOI: 10.1007/s00706-009-0120-z]
  • Kim, Sangtae; Avila-Paredes, Hugo J.; Wang, Shizhong; Chen, Chien-Ting; De Souza, Roger; Martin, Manfred; Munir, Zuhair A.
    On the conduction pathway for protons in nanocrystalline yttria-stabilized zirconia
    Physical chemistry, chemical physics : PCCP, 11, 17, 3035-3038 (2009)
    [DOI: 10.1039/b901623f]
  • Brendt, Jochen; Samuelis, Dominik; Weirich, Thomas E.; Martin, Manfred
    An in situ XAS investigation of the kinetics of the ammonolysis of Ga2O3 and the oxidation of GaN
    Physical chemistry, chemical physics : PCCP, 11, 17, 3127-3137 (2009)
    [DOI: 10.1039/b901819k]
  • Nakayama, Masanobu; Martin, Manfred
    First-principles study on defect chemistry and migration of oxide ions in ceria doped with rare-earth cations
    Physical chemistry, chemical physics : PCCP, 11, 17, 3241-3249 (2009)
    [DOI: 10.1039/b900162j]
  • Miyoshi, Shogo; Martin, Manfred
    B-site cation diffusivity of Mn and Cr in perovskite-type LaMnO3 with cation deficit nonstoichiometry
    Physical chemistry, chemical physics : PCCP, 11, 17, 1463-9076 (2009)
    [DOI: 10.1039/b901208g]
  • Müller, David Nikolaus; De Souza, Roger; Brendt, Jochen; Samuelis, Dominik; Martin, Manfred
    Oxidation states of the transition metal cations in the highly nonstoichiometric perovskite-type oxide Ba0.1Sr0.9Co0.8Fe0.2O3-delta
    Journal of materials chemistry, 19, 14, 1960-1963 (2009)
    [DOI: 10.1039/b819415g]
  • Quiroga, E.; Bensch, Wolfgang; Yu, Z.; Aceves, Mariano; De Souza, Roger; Martin, Manfred; Zaporojtchenko, V.
    Structural characteristics of a multilayer of silicon rich oxide (SRO) with high Si content prepared by LPCVD
    Physica status solidi / A, Applications and materials science, 206, 2, 263-269 (2009)
    [DOI: 10.1002/pssa.200824365]
  • Byun, Young Chang
    Oxygen transport in Ba(Fe,Co,Zr)O 3 - delta membranes
  • De Souza, Roger; Martin, Manfred
    Using 18O/16O exchange to probe an equilibrium space-charge layer at the surface of a crystalline oxide: method and application
    Physical chemistry, chemical physics : PCCP, 10, 17, 2356-2367 (2008)
    [DOI: 10.1039/b719618k]
  • Fischer, Horst; De Souza, Roger; Wätjen, Anja; Richter, Silvia; Edelhoff, Daniel; Mayer, Joachim; Martin, Manfred; Telle, Rainer
    Chemical strengthening of a dental lithium disilicate glass-ceramic material
    Journal of biomedical materials research / Part A, 87, 3, 582-587 (2008)
    [DOI: 10.1002/jbm.a.31798]
  • Fielitz, Peter; Borchardt, Günter; De Souza, Roger; Martin, Manfred; Masoud, Muayad; Heitjans, Paul
    Oxygen-18 surface exchange and diffusion in Li2O-deficient single crystalline lithium niobate
    Solid state sciences : SSS, 10, 6 : Spec. iss., 746-753 (2008)
    [DOI: 10.1016/j.solidstatesciences.2007.11.020]
  • Körfer, Sylvia; De Souza, Roger; Yoo, Han-Ill; Martin, Manfred
    Diffusion of Sr and Zr in BaTiO3 single crystals
    Solid state sciences : SSS, 2008, 725-734 (2008)
    [DOI: 10.1016/j.solidstatesciences.2007.06.017]
  • Samuelis, Dominik
    In situ XAS-Untersuchungen zur Partialoxidation von Acrolein an Mischoxidkatalysatoren
  • Yoo, Han-Ill; Lee, Chung-Eun; De Souza, Roger; Martin, Manfred
    Equal mobility of constituent cations in BaTiO3
    Applied physics letters, 92, 25, 252103 (2008)
    [DOI: 10.1063/1.2951606]
  • Massot, Michel; Oleaga, A.; Salazar, A.; Prabhakaran, D.; Martin, Manfred; Berthet, P.; Dhalenne, G.
    Critical behavior of CoO and NiO from specific heat, thermal conductivity, and thermal diffusivity measurements
    Physical review / B, 77, 13, 134438 (2008)
    [DOI: 10.1103/PhysRevB.77.134438]
  • Nagarajan, Lakshmi; De Souza, Roger; Samuelis, Dominik; Valov, Ilia; Börger, Alexander; Janek, Jürgen; Becker, Klaus-Dieter; Schmidt, Peter C.; Martin, Manfred
    A chemically driven insulator-metal transition in non-stoichiometric and amorphous gallium oxide
    Nature materials, 6, 7, 391-398 (2008)
    [DOI: 10.1038/nmat2164]
  • De Souza, Roger; Pietrowski, Martha Joanna; Anselmi-Tamburini, Umberto; Kim, Sangtae; Munir, Zuhair A.; Martin, Manfred
    Oxygen diffusion in nanocrystalline yttria-stabilized zirconia : the effect of grain boundaries
    Physical chemistry, chemical physics : PCCP, 10, 15, 2067-2072 (2008)
    [DOI: 10.1039/b719363g]
  • Belova, Irina; Murch, Graeme E.; Samuelis, Dominik; Martin, Manfred
    Diffusion kinetics analysis of cation diffusion in YSZ and LSGM
    Diffusion and defect data / A, Defect and diffusion forum : DDF, 273/276, 445-454 (2008)
    [DOI: 10.4028/]
  • Kim, Sangtae; Anselmi-Tamburini, Umberto; Park, Hee Jung; Martin, Manfred
    Unprecedented room-temperature electrical power generation using nanoscale fluorite-structured oxide electrolytes
    Advanced materials, 20, 3, S. 556-559 (2008)
    [DOI: 10.1002/adma.200700715]
  • Kroll, Peter; Schulte, Hendrik J.
    Nano-sized crystals of silicon embedded in silica glass: Large scale models and aspects of the electronic structure
    Group IV semiconductor nanostructures - 2006 : symposium held November 27 - December 1, 2006, Boston, Massachusetts, U.S.A.; presentations ... made during Symposium L: 'Group-IV Semiconductor Nanostructures' held November 27 - December 1 at the 2006 MRS fall meeting] / ed.: Leonid Tsybeskov ..., 293-299 (2007)
    [DOI: 10.1557/PROC-0958-L07-16]
  • Kienle, Lorenz; Johrendt, Dirk; De Souza, Roger
    Trendbericht : Festkörperchemie 2006
    Nachrichten aus der Chemie, 55, 3, 243-251 (2007)
    [DOI: 10.1002/nadc.20050530310]
  • Martin, Manfred
    Oxygen and cation diffusion processes in oxygen ion conductors
    Diffusion fundamentals, 6, 39 (2007)
  • Schroeder, Michael; Dragan, Mirela-Anca
    Oxygen transport in La2-xSrx NiO4+δ: membrane permeation and defect chemical modelling
    Journal of materials science : JMS, 42, 6, 1972-1983 (2007)
    [DOI: 10.1007/s10853-006-0739-7]
  • Caro, Jürgen; Caspary, Karl; Hamel, Christof; Hoting, Björn; Koelsch, Peter; Langanke, Bernd; Nassauer, Konrad; Noack, Manfred; Schiestel, Thomas; Schroeder, Michael; Byun, Young Chang; Seidel-Morgenstern, Andreas; Tsotsas, Evangelos; Wang, Haihui; Werth, Steffen
    Perovskite hollow-fiber membranes for catalytic partial oxidation of methane to synthesis gas
    Chemie - Ingenieur - Technik, 79, 6, 831-842 (2007)
    [DOI: 10.1002/cite.200700046]
  • De Souza, Roger; Maier, J.
    Capacitance of single crystal and low-angle tilt bicrystals of Fe-doped SrTiO3
    Faraday discussions, 134, 235-245 (2007)
    [DOI: 10.1039/b602914k]
  • Martin, Manfred; Lakshmi, N.; Koops, U.; Yoo, Han-Ill
    In situ investigations on the oxidation of metals
    Zeitschrift für physikalische Chemie, 221, 11/12, 1499-1508 (2007)
    [DOI: 10.1524/zpch.2007.221.11-12.1499]
  • Kampe, Philip; Giebeler, Lars; Samuelis, Dominik; Kunert, Jan; Drochner, Alfons; Haaß, Frank; Adams, Andreas H.; Ott, Jörg; Endres, Silvia; Martin, Manfred; Fuess, Hartmut; Vogel, Herbert
    Heterogeneously catalysed partial oxidation of acrolein to acrylic acid-structure, function and dynamicy of the V-Mo-W mixed oyides
    Physical chemistry, chemical physics : PCCP, 9, 27, 3577-3589 (2007)
    [DOI: 10.1039/b700098g]
  • De Souza, Roger; Martin, Manfred
    Secondary ion mass spectrometry (SIMS) : a powerful tool for studying mass transport over various length scales
    Physica status solidi / C, Current topics in solid state physics, 4, 6, 1785-1801 (2007)
    [DOI: 10.1002/pssc.200675227]
  • Valov, Ilia; De Souza, Roger; Wang, C. Z.; Börger, Alexander; Korte, Carsten; Martin, Manfred; Becker, K.-D.; Janek, Jürgen
    Preparation of nitrogen-doped YSZ thin films by pulsed laser deposition and their characterization
    Journal of materials science : JMS, 42, 6, 1931-1941 (2007)
    [DOI: 10.1007/s10853-006-0174-9]
  • Luo, Chunhui; Martin, Manfred
    Stability and defect structure of spinels Li1+xMn2-xO4-delta : I. In situ investigations on the stability field of the spinel phase
    Journal of materials science : JMS, 42, 6, 1955-1964 (2007)
    [DOI: 10.1007/s10853-006-0452-6]
  • Belova, Irina; Samuelis, Dominik; Martin, Manfred; Murch, G. E.
    Analysis of the demixing of yttria-stabilized zirconia in an electric field for different diffusion mechanisms
    The philosophical magazine, 87, 10, 1447-1463 (2007)
    [DOI: 10.1080/14786430600835805]
  • Stanislowski, M.; Peck, D.-H.; Woo, S.-K.; Singheiser, Lorenz; Hilpert, Klaus; Schulz, Olaf; Martin, Manfred
    Vaporization and diffusion studies on the stability of doped lanthanum gallates
    Fuel Cells, 6, 3/4, 270-283 (2006)
    [DOI: 10.1002/fuce.200500232]
  • Valov, Ilia; Korte, Carsten; De Souza, Roger; Martin, Manfred; Janek, Jürgen
    Electrochemical Incorporation of Nitrogen into a Zirconia Solid Electrolyte
    Electrochemical and solid state letters, 9, 5, F23-F26 (2006)
    [DOI: 10.1149/1.2183888]
  • Wang, Haihui; Schiestel, Thomas; Tablet, Cristina; Schroeder, Michael; Caro, Jürgen
    Mixed oxygen ion and electron conducting hollow fiber membranes for oxygen separation
    Solid state ionics, 177.2006, 26/32 : Special issue, 2255-2259 (2006)
    [DOI: 10.1016/j.ssi.2006.05.039]
  • Martin, Manfred
    On the ionic conductivity of strongly acceptor doped, fluorite-type oxygen ion conductors
    Journal of electroceramics, 17, 2/4, 765-773 (2006)
    [DOI: 10.1007/s10832-006-6007-z]
  • Belova, Irina; Samuelis, Dominik; Martin, Manfred; Murch, G. E.
    Cation diffusion and demixing in yttria stabilized zirconia : comparison of assumptions of constant electric field and constant current
    Diffusion and defect data / A, Defect and diffusion forum : DDF, 258/260, 247-252 (2006)
    [DOI: 10.4028/]
  • Belova, Irina; Murch, Graeme E.; Samuelis, Dominik; Martin, Manfred
    Collective and tracer diffusion via a defect cluster in LSGM
    Diffusion and defect data / A, Defect and diffusion forum : DDF, 263, 81-86 (2006)
    [DOI: 10.4028/]
  • De Souza, Roger
    A universal empirical expression for isotope surface exchange coefficients (k*) of acceptor-doped perovskite and fluorite oxides
    Physical chemistry, chemical physics : PCCP, 21, 8, 890-897 (2006)
    [DOI: 10.1039/b511702j]
  • De Souza, Roger; Martin, Manfred
    Secondary ion mass spectrometry - SIMS : a powerful tool for studying elemental distributions over various length scales
    Bunsen-Magazin, 8, 5, 109-120 (2006)
  • Belova, Irina; Murch, Graeme E.; Samuelis, Dominik; Martin, Manfred
    Contribution to the theory of demixing of yttrium in yttria-stabilized-zirconia in an electric field
    Mass and Charge Transport in Inorganic Materials III : Proceedings of the 3rd International Conference "Mass and Charge Transport in Inorganic Materials", of the Forum on New Materials, part of CIMTEC 2006 - 11th International Ceramics Congress and 4th Forum on New Materials, Acireale, Sicily, Italy, June 4-9, 2006, 42-47 (2006)
  • Belova, Irina; Samuelis, Dominik; Martin, Manfred; Murch, Graeme E.
    Correlation effects for cation diffusion via vacancy-pairs in fluorite-related oxides
    The philosophical magazine, 86, 23, 3559-3567 (2006)
    [DOI: 10.1080/14786430600669808]
  • De Souza, Roger; Meyer, R.
    Comment on 'Atomic-scale model of the grain boundary potential in perovskite oxides'
    Physical review / B, 72, 5, 056101 (2005)
    [DOI: 10.1103/PhysRevB.72.056101]
  • De Souza, Roger; Zehnpfenning, J.; Martin, Manfred; Maier, J.
    Determining oxygen isotope profiles in oxides with Time-of-Flight SIMS
    Solid state ionics, 176, 15/16, 1465-1471 (2005)
    [DOI: 10.1016/j.ssi.2005.03.012]
  • Kroll, Peter; Dronskowski, Richard; Martin, Manfred
    Formation of spinel-type gallium oxynitrides : a density-functional study of binary and ternary phases in the system Ga-O-N
    Journal of materials chemistry, 15, 32, 3296-3302 (2005)
    [DOI: 10.1039/b506687e]