Search Results - "Haugsrud, Reidar"

Proton conduction in rare-earth ortho-niobates and ortho-tantalates by Norby, Truls, Haugsrud, Reidar

“…Some oxides contain sufficient equilibrium concentrations of protons in wet atmospheres to show useful proton conduction at elevated temperatures. As an…”
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Effects of protons and acceptor substitution on the electrical conductivity of La6WO12 by HAUGSRUD, Reidar, KJØLSETH, Christian

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Electrical conductivity and TG-DSC study of hydration of Sc-doped CaSnO3 and CaZrO3 by Løken, Andreas, Kjølseth, Christian, Haugsrud, Reidar

“…Correlations linking hydration thermodynamics to materials parameters can be of vital importance for further development of proton conducting oxides. However,…”
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Hydration of lanthanum tungstate (La/W=5.6 and 5.3) studied by TG and simultaneous TG–DSC by Hancke, Ragnhild, Magrasó, Anna, Norby, Truls, Haugsrud, Reidar

“…The hydration properties of lanthanum tungstate (La/W=5.6 and 5.3) have been studied by means of thermogravimetry in the temperature range 1100 to 300°C. The…”
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High-temperature proton conductivity and defect structure of TiP2O7 by Nalini, Vajeeston, Haugsrud, Reidar, Norby, Truls

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Defect structure and its nomenclature for mixed conducting lanthanum tungstates La28–xW4+xO54+3x/2 by Erdal, Skjalg, Kalland, Liv-Elisif, Hancke, Ragnhild, Polfus, Jonathan, Haugsrud, Reidar, Norby, Truls, Magrasó, Anna

“…Based on results from experimental and theoretical studies of the crystal structure of lanthanum tungstate (La28−xW4+xO54+32xv2−32x), we present a defect model…”
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Conductivity and hydration trends in disordered fluorite and pyrochlore oxides: A study on lanthanum cerate–zirconate based compounds by Besikiotis, Vasileios, Ricote, Sandrine, Jensen, Molly Hjorth, Norby, Truls, Haugsrud, Reidar

“…In the present contribution we discuss the influence of order/disorder on the concentration and mobility of ionic charge carriers in undoped and acceptor…”
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Determination of the enthalpy of hydration of oxygen vacancies in Y-doped BaZrO3 and BaCeO3 by TG-DSC by Kjølseth, Christian, Wang, Lin-Yung, Haugsrud, Reidar, Norby, Truls

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High-Temperature Hydration and Conductivity of Mayenite, Ca12Al14O33 by Strandbakke, Ragnar, Kongshaug, Camilla, Haugsrud, Reidar, Norby, Truls

“…Mayenite, Ca12Al14O33, has been synthesized by a citric acid route, with final sintering at 1200−1350 °C. Phase purity has been characterized by X-ray…”
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High-Temperature Proton Conductivity in Acceptor-Substituted Rare-Earth Ortho-Tantalates, LnTaO4 by Haugsrud, Reidar, Norby, Truls

“…The electrical properties of 1 mol% Ca‐doped LnTaO4 (Ln=La, Nd, Gd, Er) have been characterized by AC impedance spectroscopy and by the EMF transport number…”
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Fabrication, structural and electrical characterization of lanthanum tungstate films by pulsed laser deposition by Vøllestad, Einar, Gorzkowska-Sobas, Agnieszka, Haugsrud, Reidar

“…Films of lanthanum tungstate, 3μm in thickness, were fabricated by means of pulsed laser deposition on a Pd foil. The films were characterized by X-ray…”
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Structure, Water Uptake, and Electrical Conductivity of TiP2O7 by Nalini, Vajeeston, Sørby, Magnus H., Amezawa, Koji, Haugsrud, Reidar, Fjellvåg, Helmer, Norby, Truls

“…We report here on the structure of TiP2O7 and electrical properties of nominally acceptor (Sc, Fe)‐doped TiP2O7 synthesized by an aqueous phosphoric acid…”
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Structure and conductivity of acceptor doped La2BaZnO5 and Nd2BaZnO5 by Hoque, Md. Khairul, Haugsrud, Reidar, Knee, Christopher S.

“…The effect of calcium substitution on the structure and electrical conductivity of Ln(2 - x)Ca(x)BaZnO(5 - delta), Ln = La and Nd, has been studied. Differing…”
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A combined conductivity and DFT study of protons in PbZrO3 and alkaline earth zirconate perovskites by Bjørheim, Tor S., Kuwabara, Akihide, Ahmed, Istaq, Haugsrud, Reidar, Stølen, Svein, Norby, Truls

“…The electrical properties of nominally undoped and 4 mol% Y-doped PbZrO3 have been investigated by AC conductivity measurements and impedance spectroscopy…”
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Defects and transport properties of Sr-doped LaP3O9 by Nalini, Vajeeston, Haugsrud, Reidar, Norby, Truls

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Hydration of Rutile TiO2: Thermodynamics and Effects on n- and p-Type Electronic Conduction by Erdal, Skjalg, Kongshaug, Camilla, Bjørheim, Tor S, Jalarvo, Niina, Haugsrud, Reidar, Norby, Truls

“…The bulk conductivity of polycrystalline 1 mol-% Fe-doped rutile TiO2 has been measured as a function of p H2O and temperature under oxidizing and reducing…”
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On the influence of sol-gel derived CeO2 coatings on high-temperature oxidation of Co, Ni and Cu by HAUGSRUD, Reidar

“…The effects of CeO2 coatings on high-temperature oxidation of Co, Ni and Cu have been investigated as a function of temperature at oxygen pressures from 1 x…”
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Surface kinetics and bulk transport in La2Ni0.5Cu0.5O4+δ membranes from conductivity relaxation by Li, Zuoan, Haugsrud, Reidar

“…This work reports conductivity relaxation measurements on both uncoated (1.2 mm thick) and coated (2.0 mm thick) La2Ni0.5Cu0.5O4+δ membranes in the temperature…”
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Synthesis, densification and electrical properties of strontium cerate ceramics by Dahl, Paul Inge, Haugsrud, Reidar, Lein, Hilde Lea, Grande, Tor, Norby, Truls, Einarsrud, Mari-Ann

“…Powders of pure and 5% ytterbium substituted strontium cerate (SrCeO 3/SrCe 0.95Yb 0.05O 3− δ ) were prepared by spray pyrolysis of nitrate salt solutions. The…”
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The correlation between surface kinetic and bulk diffusion properties of proton conducting oxides by Hancke, Ragnhild, Haugsrud, Reidar

“…The correlation between surface kinetic and diffusion properties of proton conducting oxides is addressed in this work. Thermogravimetric relaxation…”
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