Artikel

Fu, Qiang ; Schwarz, Björn ; Ding, Ziming ; Sarapulova, Angelina ; Weidler, Peter G. ; Missyul, Alexander ; Etter, Martin ; Welter, Edmund ; Hua, Weibo ; Knapp, Michael ; Dsoke, Sonia ; Ehrenberg, Helmut (2023)
Guest Ion‐Dependent Reaction Mechanisms of New Pseudocapacitive Mg₃V₄(PO₄)₆/Carbon Composite as Negative Electrode for Monovalent‐Ion Batteries.
In: Advanced Science, 2023, 10 (11)
doi: 10.26083/tuprints-00023742
Artikel, Zweitveröffentlichung, Verlagsversion

Liu, Laijun ; Knapp, Michael ; Ehrenberg, Helmut ; Fang, Liang ; Fan, Huiqing ; Schmitt, Ljubomira Ana ; Fuess, Hartmut ; Hoelzel, Markus ; Dammak, Hichem ; Thi, Mai Pham ; Hinterstein, Manuel (2017)
Average vs. local structure and composition-property phase diagram of K 0.5 Na 0.5 NbO 3 -Bi ½ Na ½ TiO 3 system.
In: Journal of the European Ceramic Society, 37 (4)
doi: 10.1016/j.jeurceramsoc.2016.11.024
Artikel, Bibliographie

Dasgupta, Subho ; Das, Bijoy ; Li, Qiang ; Wang, Di ; Baby, Tessy T. ; Indris, Sylvio ; Knapp, Michael ; Ehrenberg, Helmut ; Fink, Karin ; Kruk, Robert ; Hahn, Horst (2016)
Toward On-and-Off Magnetism: Reversible Electrochemistry to Control Magnetic Phase Transitions in Spinel Ferrites.
In: Advanced Functional Materials, 26 (41)
doi: 10.1002/adfm.201603411
Artikel, Bibliographie

Yavuz, Murat ; Knapp, Michael ; Indris, Sylvio ; Hinterstein, Manuel ; Donner, Wolfgang ; Ehrenberg, Helmut (2015)
X-ray total scattering investigation of Al0.57Sn0.43O1.71nanoparticles.
In: Journal of Applied Crystallography, 48 (6)
doi: 10.1107/S1600576715017203
Artikel, Bibliographie

Chen, Ruiyong ; Ren, Shuhua ; Knapp, Michael ; Wang, Di ; Witter, Raiker ; Fichtner, Maximilian ; Hahn, Horst (2015)
Disordered Lithium-Rich Oxyfluoride as a Stable Host for Enhanced Li+Intercalation Storage.
In: Advanced Energy Materials, 5 (9)
doi: 10.1002/aenm.201401814
Artikel, Bibliographie

Chen, Ruiyong ; Knapp, Michael ; Yavuz, Murat ; Ren, Shuhua ; Witte, Ralf ; Heinzmann, Ralf ; Hahn, Horst ; Ehrenberg, Helmut ; Indris, Sylvio (2015)
Nanoscale spinel LiFeTiO4for intercalation pseudocapacitive Li+storage.
In: Phys. Chem. Chem. Phys., 17 (2)
doi: 10.1039/c4cp04655b
Artikel, Bibliographie

Dasgupta, Subho ; Das, Bijoy ; Knapp, Michael ; Brand, Richard A. ; Ehrenberg, Helmut ; Kruk, Robert ; Hahn, Horst (2014)
Intercalation-Driven Reversible Control of Magnetism in Bulk Ferromagnets.
In: Advanced Materials, 26 (27)
doi: 10.1002/adma.201305932
Artikel, Bibliographie

Chen, Ruiyong ; Knapp, Michael ; Yavuz, Murat ; Heinzmann, Ralf ; Wang, Di ; Ren, Shuhua ; Trouillet, Vanessa ; Lebedkin, Sergei ; Doyle, Stephen ; Hahn, Horst ; Ehrenberg, Helmut ; Indris, Sylvio (2014)
Reversible Li+Storage in a LiMnTiO4Spinel and Its Structural Transition Mechanisms.
In: The Journal of Physical Chemistry C, 118 (24)
doi: 10.1021/jp501618n
Artikel, Bibliographie

Hinterstein, Manuel ; Knapp, Michael ; Hölzel, Markus ; Jo, Wook ; Cervellino, Antonio ; Ehrenberg, Helmut ; Fuess, Hartmut (2010)
Field-induced phase transition in Bi1/2Na1/2TiO3-based lead-free piezoelectric ceramics.
In: Journal of Applied Crystallography, 43 (6)
doi: 10.1107/S0021889810038264
Artikel, Bibliographie

Hinterstein, Manuel ; Schönau, Kristin A. ; Kling, Jens ; Fuess, Hartmut ; Knapp, Michael ; Kungl, Hans ; Hoffmann, Michael J. (2010)
Influence of lanthanum doping on the morphotropic phase boundary of lead zirconate titanate.
In: Journal of Applied Physics, 108 (2)
doi: 10.1063/1.3437399
Artikel, Bibliographie

Schönau, Kristin A. ; Knapp, Michael ; Maglione, Mario ; Fuess, Hartmut (2009)
In situ investigation of the stability field and relaxation behavior of nanodomain structures in morphotropic Pb[Zr[sub 1−x]Ti[sub x]]O[sub 3] under variations in electric field and temperature.
In: Applied Physics Letters, 94 (12)
doi: 10.1063/1.3098073
Artikel, Bibliographie

Schönau, Kristin ; Knapp, Michael ; Kungl, Hans ; Hoffmann, Michael J. ; Fuess, Hartmut (2007)
In situ synchrotron diffraction investigation of morphotropic Pb[Zr1−xTix]O3 under an applied electric field.
In: Physical Review B, 76 (14)
doi: 10.1103/PhysRevB.76.144112
Artikel, Bibliographie

Theissmann, Ralf ; Schmitt, Ljubomira A. ; Kling, Jens ; Schierholz, Roland ; Schönau, Kristin A. ; Fuess, Hartmut ; Knapp, Michael ; Kungl, Hans ; Hoffmann, Michael J. (2007)
Nanodomains in morphotropic lead zirconate titanate ceramics: On the origin of the strong piezoelectric effect.
In: Journal of Applied Physics, 102 (2)
doi: 10.1063/1.2753569
Artikel, Bibliographie

Schönau, Kristin A. ; Schmitt, Ljubomira A. ; Knapp, Michael ; Fuess, Hartmut ; Eichel, Rüdiger-A. ; Kungl, Hans ; Hoffmann, Michael J. (2007)
Nanodomain structure of Pb[Zr_{1−x}Ti_{x}]O_{3} at its morphotropic phase boundary: Investigations from local to average structure.
In: Physical Review B, 75 (18)
doi: 10.1103/PhysRevB.75.184117
Artikel, Bibliographie

Kungl, Hans ; Theissmann, Ralf ; Knapp, Michael ; Baehtz, Carsten ; Fuess, Hartmut ; Wagner, Susanne ; Fett, Theo ; Hoffmann, Michael J. (2007)
Estimation of strain from piezoelectric effect and domain switching in morphotropic PZT by combined analysis of macroscopic strain measurements and synchrotron X-ray data.
In: Acta Materialia, 55 (6)
Artikel, Bibliographie

Schoenau, Kristin A. ; Knapp, Michael ; Kungl, Hans ; Hoffmann, Michael J. ; Fuess, Hartmut (2007)
In situ synchrotron diffraction investigation of morphotropic Pb[Zr1-xTix]O-3 under an applied electric field.
In: Physical Review B, 76
Artikel, Bibliographie

Theissmann, Ralf ; Schmitt, Ljubomira A. ; Kling, Jens ; Schierholz, Roland ; Schoenau, Kristin A. ; Fuess, Hartmut ; Knapp, Michael ; Kungl, Hans ; Hoffmann, Michael J. (2007)
Nanodomains in morphotropic lead zirconate titanate ceramics : on the origin of the strong piezoelectric effect.
In: Journal of Applied Physics, 102
Artikel, Bibliographie

Meštrić, Hrvoje ; Eichel, Rüdiger-A. ; Dinse, Klaus-Peter ; Ozarowski, Andrew ; Van Tol, Johan ; Brunel, Louis ; Kungl, Hans ; Hoffmann, Michael ; Schönau, Kristin ; Knapp, Michael ; Fuess, Hartmut (2006)
Iron-oxygen vacancy defect association in polycrystalline iron-modified PbZrO3 antiferroelectrics: Multifrequency electron paramagnetic resonance and Newman superposition model analysis.
In: Physical Review B, 73 (18)
doi: 10.1103/PhysRevB.73.184105
Artikel, Bibliographie

Trots, D. M. ; Skomorokhov, A. N. ; Knapp, Michael ; Fuess, Hartmut (2006)
High-temperature behaviour of average structure and vibrational density of states in the ternary superionic compound AgCuSe.
In: European Physical Journal B, 51
Artikel, Bibliographie

Meštrić, Hrvoje ; Eichel, Rüdiger-A. ; Koss, T. ; Dinse, Klaus-Peter ; Laubach, Sonja ; Laubach, Stefan ; Schmidt, Peter C. ; Schönau, Kristin A. ; Knapp, Michael ; Ehrenberg, Helmut (2005)
Iron-oxygen vacancy defect centers in PbTiO3 : Newman superposition model analysis and density functional calculations.
In: Physical Review B, 71 (13)
doi: 10.1103/PhysRevB.71.134109
Artikel, Bibliographie

Vasylechko, L. ; Pivak, Y. ; Senyshyn, Anatoliy ; Savytskii, D. ; Berkowski, M. ; Borrmann, H. ; Knapp, Michael ; Paulmann, C. (2005)
Crystal structure and thermal expansion of PrGaO3 in the temperature range 12-1253 K.
In: Journal of solid state chemistry, 178
Artikel, Bibliographie

Sekar, C. ; Schupp-Niewa, B. ; Krabbes, G. ; Wolf, M. ; Eckert, D. ; Knapp, Michael ; Muller, K. H. (2005)
Synthesis, crystal structure and magnetic properties of the spin ladder compounds La2(Cu1-xZnx)2O5 and La8(Cu1-xZnx)7O19.
In: Journal of solid state chemistry, 178
Artikel, Bibliographie

Peters, L. ; Knorr, K. ; Knapp, Michael ; Depmeier, W. (2005)
Thermal expansion of gehlenite, Ca2Al[AlSiO7], and the related aluminates LnCaAl[Al2O79 with Ln=Tb, Sm.
In: Physics and chemistry of minerals, 32
Artikel, Bibliographie

Rafaja, David ; Ebert, Jörg ; Miehe, Gerhard ; Martz, Nathalie ; Knapp, Michael ; Stahl, Branko ; Ghafari, Mohammad ; Hahn, Horst ; Fuess, Hartmut ; Schmollngruber, Peter ; Farber, Paul ; Siegle, Henrik (2004)
Changes in the real structure and magnetoresistance of Co90Fe10/Cu and Co90Fe10/Cu85Ag10Au5 multilayers after annealing.
In: Thin Solid Films, 460 (1-2)
doi: 10.1016/j.tsf.2004.01.099
Artikel, Bibliographie

Leineweber, A. ; Mittemeijer, E. J. ; Knapp, Michael ; Baehtz, Carsten (2004)
In-situ and ex-situ observation of the ordering kinetics in Ni1.50Sn.
In: Materials science forum, 443/444
Artikel, Bibliographie

Rafaja, David ; Klemm, V. ; Schreiber, G. ; Knapp, Michael ; Kuzel, R. (2004)
Interference phenomena observed by x-ray diffraction in nanocrystalline thin films.
In: Journal of applied crystallography, 37
Artikel, Bibliographie

Zibrowius, B. ; Ruschewitz, U. ; Baehtz, Carsten ; Knapp, Michael (2004)
Phase transition in K2C2 as studied by synchrotron X-ray powder diffraction and solid-state 13C NMR spectroscopy.
In: Physical chemistry, chemical physics, 6
Artikel, Bibliographie

Knapp, Michael ; Joco, V. ; Baehtz, Carsten ; Brecht, H. H. ; Berghaeuser, A. ; Ehrenberg, Helmut ; Seggern, Heinz von ; Fueß, Hartmut (2004)
Position-sensitive detector system OBI for high resolution x-ray powder diffraction using on-site readable image plates.
In: Nuclear instruments & methods in physics research / A, 521
Artikel, Bibliographie

Gierlowski, P. ; Dynowska, E. ; Abaloshev, A. ; Pelka, J. B. ; Paszkowicz, W. ; Kostrzenska, D. ; Baehtz, Carsten ; Knapp, Michael (2004)
Structure of laser-modified YBa 2 Cu 3 O 7-x thin films.
In: Journal of alloys and compounds, 362
Artikel, Bibliographie

Paszkowicz, W. ; Knapp, Michael ; Baehtz, Carsten ; Minikayev, R. ; Piszora, P. ; Jiang, J. Z. ; Bacewicz, R. (2004)
Synchrotron X-ray wavelength calibration using a diamond internal standard : application to low-temperature thermal-expansion studies.
In: Journal of alloys and compounds, 382
Artikel, Bibliographie

Ehrenberg, Helmut ; Pauly, Hermann ; Knapp, Michael ; Groebner, J. ; Mirkovic, D. (2004)
Tetragonal low-temperature structure of LiAl.
In: Journal of solid state chemistry, 177
Artikel, Bibliographie

Paszkowicz, W. ; Minikayev, R. ; Piszora, P. ; Knapp, Michael ; Baehtz, Carsten ; Recio, J. M. ; Marques, M. ; Mori-Sanchez, P. ; Gerward, L. ; Jiang, J. Z. (2004)
Thermal expansion of spinel-type Si3N4.
In: Physical review / B, 69
Artikel, Bibliographie

Senyshyn, Anatoliy ; Vasylechko, L. ; Knapp, Michael ; Bismayer, U. ; Berkowski, M. ; Matkovskii, A. (2004)
Thermal expansion of the perovskite-type NdGaO3.
In: Journal of alloys and compounds, 382
Artikel, Bibliographie

Knapp, Michael ; Baehtz, Carsten ; Ehrenberg, Helmut ; Fuess, Hartmut (2004)
The synchrotron powder diffractometer at beamline B2 at HASYLAB/DESY : status and capabilities.
In: Journal of synchrotron radiation, 11
Artikel, Bibliographie

Vasylechko, L. ; Vashook, V. ; Savytskii, D. ; Niewa, R. ; Knapp, Michael ; Ullmann, H. ; Berkowski, M. ; Matkovskii, A. ; Bismayer, U. (2003)
Crystal structure, thermal expansion and conductivity of anisotropic La1-xSrxGa1-2xMg2xO3-y (X = 0.05, 0.1) single crystals.
In: Journal of solid state chemistry, 172 (2)
doi: 10.1016/S0022-4596(03)00016-1
Artikel, Bibliographie

Stir, M. ; Traykova, T. ; Nicula, R. ; Burkel, E. ; Baehtz, Carsten ; Knapp, Michael ; Lathe, C. (2003)
In situ high-pressure and high-temperature diffraction experiments on pure and Ag-doped TiO2 nanopowders.
In: Nuclear instruments and methods in physics research / B, 199
Artikel, Bibliographie

Vashook, V. ; Vasylechko, L. ; Knapp, Michael ; Ullmann, H. ; Guth, U. (2003)
Lanthanum doped calcium titanates : synthesis, crystal structure, thermal expansion and transport properties.
In: Journal of alloys and compounds, 354
Artikel, Bibliographie

Ruschewitz, U. ; Baehtz, Carsten ; Knapp, Michael (2003)
Zur Kinetik der Bildung von Na2PdC2.
In: Zeitschrift für anorganische und allgemeine Chemie, 629
Artikel, Bibliographie

Paszkowicz, W. ; Pelka, J. B. ; Knapp, Michael ; Szyszko, T. ; Podsiadlo, S. (2002)
Lattice parameters and anisotropic thermal expansion of hexagonal boron nitride in the 10-297.5 K temperature range.
In: Applied physics / A, 75
Artikel, Bibliographie

Paszkowicz, W. ; Knapp, Michael ; Podsiadlo, S. ; Kamler, G. ; Pelka, J. B. (2002)
Lattice parameters of aluminium nitride in the range 10-291 K.
In: Acta physica Polonica / A, 101
Artikel, Bibliographie

Ehrenberg, Helmut ; Knapp, Michael ; Baehtz, Carsten ; Klemme, S. (2002)
Tetragonal low-temperature phase of MgCr2O4.
In: Powder diffraction, 17
Artikel, Bibliographie

Pelka, J. B. ; Paszkowicz, W. ; Gierlowski, P. ; Lewandowski, S. J. ; Zielinski, M. ; Barbanera, S. ; Knapp, Michael (2002)
X-ray characterization of films formed by pulsed laser deposition on cold substrates from YBaCuO targets.
In: Acta physica Polonica / A, 101
Artikel, Bibliographie

Ehrenberg, Helmut ; Theissmann, Ralf ; Gassenbauer, Y. ; Knapp, Michael ; Wltschek, G. ; Weitzel, Hans ; Fuess, Hartmut ; Herrmannsdörfer, T. ; Sheptyakov, D. (2002)
Crystal and magnetic structure relationship in Cu(W1-xMox)O4 compounds with wolframite-type structure.
In: Journal of physics / Condensed matter, 14
Artikel, Bibliographie

Knapp, Michael ; Ehrenberg, Helmut ; Fuess, Hartmut ; Hahn, U. ; Hesse, M. ; Schulte-Schrepping, H. ; Wroblewski, T. (2001)
Pneumatically bent mirrors: an additional degree of freedom for beam conditioning in high-resolution powder diffraction.
In: Nuclear Instruments and Methods in Physics Research Section A, 467/468 (1)
Artikel, Bibliographie

Knapp, Michael ; Ruschewitz, U. (2001)
Structural phase transitions in CaC2.
In: Chemistry: a European journal, 7
Artikel, Bibliographie

Konferenzveröffentlichung

Kanitsar, Armin ; Theußl, Thomas ; Mroz, Lukas ; Sramek, Milos ; Bartroli, Anna Vilanova ; Csebfalvi, Balazs ; Hladuvka, Jiri ; Fleischmann, Dominik ; Knapp, Michael ; Wegenkittl, Rainer ; Felkel, Petr ; Roettger, Stefan ; Guthe, Stefan ; Purgathofer, Werner ; Groeller, Eduard (2002)
Christmas tree case study: computed tomography as a tool for mastering complex real world objects with applications in computer graphics.
Proceedings of the conference on Visualization'02.
Konferenzveröffentlichung, Bibliographie

Dissertation

Knapp, Michael (2002)
Weiterentwicklung und Anwendung diffraktometrischer Methoden zur Materialcharakterisierung mit Synchrotronstrahlung.
Technische Universität Darmstadt
Dissertation, Erstveröffentlichung