Experimental studies of atomic defects and processes in materials by means of specific and sensitive techniques of positron-electron annihilation and dilatometry.
Marcel Simhofer, Philipp Brunner, Jörg Weissmüller and Roland WürschumDiffusion–reaction modelling of modulated hydrogen loadingPhilosophical Magazine
,
2024, DOIShow publication in PURE
2023
Roland WürschumMean time of diffusion- and reaction-limited loading and unloadingApplied Physics A: Materials Science and Processing129,
2023, DOIShow publication in PURE
Elisabeth Hengge, Jakob Ihrenberger, Eva-Maria Steyskal, Ricardo Henrique Buzolin, Martin Luckabauer, Christof Sommitsch and Roland WürschumPorosity evolution and oxide formation in bulk nanoporous copper dealloyed from a copper – manganese alloy studied by in situ resistometryNanoscale Advances5,
393-404,
2023, DOIShow publication in PURE
Lara Marie Novak and Eva-Maria SteyskalElectrochemical detection of fluoride ions in water with nanoporous gold modified by a boronic acid terminated self-assembled monolayerRSC Advances13,
6947-6953,
2023, DOIShow publication in PURE
2022
Laura Resch, Anna Karner, Wolfgang Sprengel, Roland Würschum and Robert SchennachWater intake of cellulose materials monitored by positron annihilation lifetime spectroscopyCellulose29,
1357–1363,
2022, DOIShow publication in PURE
Stefan Topolovec, Alexander Steiner, Markus Gößler, Heinz Krenn and Roland WürschumMagnetism of Co-rich clusters embedded in nanoporous Pd prepared by electrochemical dealloying - Influence of thermal annealingJournal of Magnetism and Magnetic Materials563,
2022, DOIShow publication in PURE
2021
Markus Gößler, Stefan Topolovec, Heinz Krenn and Roland WürschumNanoporous Pd 1−x Co x for hydrogen-intercalation magneto-ionicsAPL Materials 9,
2021, DOIShow publication in PURE
2020
Markus Gößler, Manfred Nachtnebel, Hartmuth Schröttner, Heinz Krenn, Eva-Maria Steyskal and Roland WürschumEvolution of superparamagnetism in the electrochemical dealloying processJournal of Applied Physics128,
2020, DOIShow publication in PURE
2019
Kashif Nadeem, M. Kamran, Heinz Krenn, D.V. Szabo, Ulrich Brossmann and Roland WürschumDisordered and Frustrated Magnetization in Coated MnFe2O4 Nanoparticles Prepared by Microwave Plasma SynthesisSolid State Phenomena289,
127-133,
2019, DOIShow publication in PURE
Elisabeth Hengge, Eva-Maria Steyskal, Rupert Bachler, Alexander Dennig, Bernd Nidetzky and Roland WürschumAdsorption and desorption of self-assembled L-cysteine monolayers on nanoporous gold monitored by in situ resistometryBeilstein Journal of Nanotechnology 10,
2275-2279,
2019, DOIShow publication in PURE
Gregor Klinser, Harald Krenn, Stefan Koller and Roland WürschumOperando monitoring of charging-induced defect formation in battery electrodes by positronsApplied Physics Letters114,
013905,
2019, DOIShow publication in PURE
Gregor Klinser, Roman Zettl, H. Martin R. Wilkening, Heinz Krenn, Ilie Hanzu and Roland WürschumRedox processes in sodium vanadium phosphate cathodes – insights from operando magnetometryPhysical Chemistry, Chemical Physics
,
2019, DOIShow publication in PURE
Markus Gößler, Mihaela Albu, Gregor Klinser, Eva-Maria Steyskal, Heinz Krenn and Roland WürschumMagneto-Ionic Switching of SuperparamagnetismSmall
,
2019, DOIShow publication in PURE
2018
Gregor Klinser, Martin Stückler, Harald Krenn, Stefan Koller, Walter Goessler, Heinz Krenn and Roland WürschumCharging processes in the cathode LiNi0.6Mn0.2Co0.2O2 as revealed by operando magnetometryJournal of Power Sources396,
791-795,
2018, DOIShow publication in PURE
Eva-Maria Steyskal, Michael Seidl, Sanja Simic and Roland WürschumEnhanced Charging-Induced Resistance Variations of Nanoporous Gold by Dealloying in Neutral Silver Nitrate SolutionLangmuir34,
13110-13115,
2018, DOIShow publication in PURE
Markus Gößler, Eva-Maria Steyskal, Markus Stütz, Norbert Enzinger and Roland WürschumHydrogen-induced plasticity in nanoporous palladiumBeilstein Journal of Nanotechnology 9,
3013,
2018, DOIShow publication in PURE
2017
Roland Würschum, Stefan Topolovec, Gregor Klinser, Wolfgang Sprengel, Harald Kren, Stefan Koller, H Krenn, Christoph Hugenschmidt, M. Reiner, Thomas Gigl, Frank Berkermeier and Martin FiedlerDefects and Charging Processes in Li-Ion Battery Cathodes Studied by Operando Magnetometry and Positron AnihilationMaterials Science Forum879,
2125-2130,
2017, DOIShow publication in PURE
Eva-Maria Steyskal, Michael Seidl, Matthias Graf and Roland WürschumDealloying progress during nanoporous structure evolution analyzed by in situ resistometryPhysical Chemistry, Chemical Physics19,
29880-29885,
2017, DOIShow publication in PURE
2016
Ulrich Brossmann, Mihaela Albu, Ferdinand Hofer and Roland WürschumSingle grain analysis on a nanoscale in ZrO2:Al2O3 nano-composites by means of high-resolution scanning transmission electron microscopyMaterials Research Express3,
2016, DOIShow publication in PURE
Stefan Topolovec, Heinz Krenn and Roland WürschumEnhanced magnetic moment of ultrathin Co films measured by in situ electrodeposition in a SQUIDJournal of Magnetism and Magnetic Materials397,
96-100,
2016, DOIShow publication in PURE
Stefan Topolovec, Harald Kren, Gregor Klinser, Stefan Koller, Heinz Krenn and Roland WürschumOperando magnetometry on LixCoO2 during charging/dischargingJournal of Solid State Electrochemistry20,
1491-1496,
2016, DOIShow publication in PURE
Gregor Klinser, Stefan Topolovec, Harald Kren, Stefan Koller, Heinz Krenn and Roland WürschumCharging of lithium cobalt oxide battery cathodes studied by means of magnetometrySolid State Ionics293,
64-71,
2016, DOIShow publication in PURE
Eva-Maria Steyskal, Zhen Qi, Peter Pölt, Mihaela Albu, Jörg Weissmüller and Roland WürschumElectrochemically Tunable Resistance of Nanoporous Platinum Produced by DealloyingLangmuir32,
7757−7764,
2016, DOIShow publication in PURE
Eva-Maria Steyskal, Christopher Alois Wiednig, Norbert Enzinger and Roland WürschumIn situ characterization of hydrogen absorption in nanoporous palladium produced by dealloyingBeilstein Journal of Nanotechnology 7,
1197-1201,
2016, DOIShow publication in PURE
Gregor Klinser, Stefan Topolovec, Harald Kren, Stefan Koller, Walter Gössler, Roland Würschum and Heinz KrennContinuous monitoring of the bulk oxidation states in LixNi1/3Mn1/3Co1/3O2 during charging and dischargingApplied Physics Letters109,
213901,
2016, DOIShow publication in PURE
2015
Stefan Topolovec, Heinz Krenn and Roland WürschumElectrochemical cell for in situ electrodeposition of magnetic thin films in a superconducting quantum interference device magnetometerReview of Scientific Instruments86,
063903-063903,
2015, DOIShow publication in PURE
2013
Eva-Maria Steyskal, Stefan Topolovec, Stephan Landgraf, Heinz Krenn and Roland WürschumIn situ monitoring magnetism and resistance of nanophase platinum upon electrochemical oxidationBeilstein Journal of Nanotechnology 4,
394-399,
2013, DOIShow publication in PURE
2012
Roland Würschum, Bernd Oberdorfer, Eva-Maria Steyskal, Wolfgang Sprengel, Werner Puff, P. Pikart, C. Hugenschmidt and R. PippanFree volumes in bulk nanocrystalline metals studied by the complementary techniques of positron annihilation and dilatometryPhysica B: Condensed Matter407,
2670-2675,
2012, DOIShow publication in PURE
Wolfgang Sprengel, Bernd Oberdorfer, Eva-Maria Steyskal and Roland WürschumDilatometry: a powerful tool for the study of defects in ultrafine grained metalsJournal of Materials Science47,
7921-7925,
2012, DOIShow publication in PURE
Kashif Nadeem, Heinz Krenn, Thomas Traußnig, Roland Würschum, D.V. Szabo and Ilse Letofsky-PapstSpin-glass freezing of maghemite nanoparticles prepared by microwave plasma synthesisJournal of Applied Physics111,
113911-113917,
2012, DOIShow publication in PURE
J.X. Fang, U. Vainio, Werner Puff, Roland Würschum, X.L. Wang, D. Wang, M. Ghafari, F. Jiang, J. Sun, H. Hahn and H. GleiterAtomic Structure and Stuctural Stability of Sc_75Fe_25 NanoglassesNano Letters12,
458-463,
2012, DOIShow publication in PURE
Peter Parz, M.J. Faller, R. Pippan, Werner Puff and Roland WürschumDefects in Al-3wt%Cu after high-pressure torsion studied by two-dimensional Doppler broadening spectroscopyPhysics Procedia 35,
10-15,
2012, DOIShow publication in PURE
2011
Andreas Kautsch, Ulrich Brossmann, Heinz Krenn, Ferdinand Hofer, D.V. Szabo and Roland WürschumStructural and optical properties of nanoparticulate Y2O3:Eu2O3 made by microwave plasma synthesisApplied Physics A: Materials Science and Processing105,
709-712,
2011, DOIShow publication in PURE
Bernd Oberdorfer, Eva-Maria Steyskal, Wolfgang Sprengel, Reinhard Pippan, Michael Zehetbauer, Werner Puff and Roland WürschumRecrystallization kinetics of ultrafine-grained Ni studied by dilatometryJournal of Alloys and Compounds509,
5309-5311,
2011, DOIShow publication in PURE
Kashif Nadeem, Heinz Krenn, Thomas Traußnig, Roland Würschum, D.V. Szabo and Ilse Letofsky-PapstEffect of dipolar and exchange interactions on magnetic blocking of maghemite nanoparticlesJournal of Magnetism and Magnetic Materials323,
1998-2004,
2011, DOIShow publication in PURE
Thomas Traußnig, Stefan Topolovec, Kashif Nadeem, D.V. Szabo, Heinz Krenn and Roland WürschumMagnetization of Fe-oxide based nanocomposite tuned by surface chargingPhysica Status Solidi - Rapid Research Letters5,
150-152,
2011, DOIShow publication in PURE
2010
Bernd Oberdorfer, Eva - Maria Steyskal, Wolfgang Sprengel, Werner Puff, P. Pikart, C. Hugenschmidt, M. Zehetbauer, R. Pippan and Roland WürschumIn-situ probing of fast defect annealing in Cu and Ni with a high-intensity positron beamPhysical Review Letters105,
146101-1-146101-4,
2010, DOIShow publication in PURE
K Nadeem, Thomas Traußnig, Ilse Letofsky-Papst, H. Krenn, Ulrich Brossmann and Roland WürschumSol-gel synthesis and characterization of single-phase Ni ferrite nanoparticles dispersed in SiCO2 matrixJournal of Alloys and Compounds493,
385-390,
2010, DOIShow publication in PURE
Martin Sagmeister, Ulrich Brossmann, Emil List, Rolf Ochs, Dorothee Vinga Szabó, Robert Saf, Werner Grogger, Elena Tchernychova and Roland WürschumSynthesis and optical properties of organic semiconductor: zirconia nanocompositesJournal of Nanoparticle Research
,
2541-2551,
2010, DOIShow publication in PURE
Bernd Oberdorfer, Bernd Lorenzoni, K. Unger, Wolfgang Sprengel, M. Zehetbauer, R. Pippan and Roland WürschumAbsolute concentration of free volume-type defects in ultrafine-grained Fe prepared by high-pressure torsionScripta Materialia63,
452-455,
2010, DOIShow publication in PURE
Michael Zehetbauer, R. Grössinger, Heinz Krenn, M. Krystian, R. Pippan, P. Rogl, T. Waitz and Roland WürschumBulk nanostructured materials by severe plastic deformationAdvanced Engineering Materials12,
692-700,
2010, DOIShow publication in PURE
Wolfgang Lechner, Werner Puff, G. Wilde and Roland WürschumVacancy-type defects in amorphous and nanocrystalline Al alloys: Variation with preparation route and processingScripta Materialia62,
439-442,
2010, DOIShow publication in PURE
Patrick Wahl, Thomas Traußnig, Stephan Landgraf, Hai-Jun Jin, Jörg Weissmüller and Roland WürschumAdsorption-driven tuning of the electrical resistance of nanoporous goldJournal of Applied Physics8,
073706-1-073706-6,
2010, DOIShow publication in PURE
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