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Contributions of George J. Papadopoulos
J. T. Devreese
TFVS, Departement Fysica, Universiteit Antwerpen, Antwerpen, Belgium
eiTT/COBRA, Departement Natuurkunde, Technische Universiteit Eindhoven, Eindhoven, The Netherlands
Geometrical and electronic properties of ultra thin epitaxial metal nanowires on flat and vicinal Si surfaces
H. Pfnür, V. Zielasek, CH. Tegnkamp, T. Block, Z. Kallassy
Institut für Festkörperphysik, Universität Hannover, Hannover, Germany
Photonic crystals: a novel class of functional materials
A. Modinos1, N. Stefanou2
1Department of Physics, National Technical University of Athens, Athens, Greece
2University of Athens, Section of Solid State Physics, Panepistimioupolis, Athens, Greece
Neutron diffraction study of Mn3Fe4V6O24
A. Bezkrovnyi1, N. Guskos2, 3, J. Typek3, N.YU. Ryabova1, M. Bosacka4,
A. Blonska-Tabero4, M. Kurzawa4, I. Rychlowska-Himmel4, G. Zolnierkiewicz3
1Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Russia
2Solid State Physics, Department of Physics, University of Athens, Athens, Greece
3Institute of Physics, Szczecin University of Technology, Szczecin, Poland
4Department of Inorganic and Analytical Chemistry, Szczecin University of Technology, Szczecin, Poland
Inverse-range-parameter dependence of gas-liquid nucleation in a Yukawa fluid A density functional approach
I. A. Hadjiagapiou, A. Malakis, S. S. Martinos
Solid State Physics Section, Department of Physics, University of Athens, Athens, Greece
Characterization and EPR studies of TiC and TiN ceramics at room temperature
T. Bodziony1, N. Guskos1, 2, A. Biedunkiewicz3, J. Typek1, R. Wróbel4, M. Maryniak1
1Institute of Physics, Szczecin University of Technology, Szczecin, Poland
2Solid State Section, Department of Physics, University of Athens, Athens, Greece
3Institute of Material Engineering, Szczecin University of Technology, Szczecin, Poland
4Department of Chemical and Environment Engineering, Szczecin University of Technology, Szczecin, Poland
Novel nanocomposites using carbon nanotubes and melamine-formaldehyde
L. Licea-jiménez, R. W. Rychwalski
Department of Materials and Manufacturing Technology, Chalmers University of Technology, Göteborg, Sweden
Preparation and characterization of nanocarbons for hydrogen storage
R. J. Kaleńczuk
Centre for Knowledge Based Nanomaterials and Technologies KnowMatTech, Department of Hydrogen Technologies and Nanomaterials, Institute of Chemical and Environment Engineering, Szczecin University of Technology, Szczecin, Poland
Magnetic resonance study of M3Fe4V6O24 (M = Mg, Zn, Mn, Cu, Co) compounds
N. Guskos1,2, J. Typek2, G. Zolnierkiewicz2, A. Blonska-tabero3,
M. Kurzawa3, M. Bosacka3
1Solid State Section, Department of Physics, University of Athens, Athens, Greece
2Institute of Physics, Szczecin University of Technology, Szczecin, Poland
3Department of Inorganic and Analytical Chemistry, Szczecin University of Technology, Szczecin, Poland
Synthesis and ESR study of (TbxY1 - x)2Cu2O5 solid solutions
J. Typek1, J. Kostrzewa1, N. Guskos1,2
1Institute of Physics, Szczecin University of Technology, Szczecin, Poland
2Solid State Section, Department of Physics, University of Athens, Athens, Greece
Carburisation of nanocrystalline iron with ethylene
U. Narkiewicz1, I. Kucharewicz1, W. Arabczyk1, S. Lenart2
1Szczecin University of Technology, Institute of Chemical and Environment Engineering, Szczecin, Poland
2Szczecin University of Technology, Institute of Materials Engineering, Szczecin, Poland
Finite-size analysis via the critical energy-subspace method in the Ising models
A. C. Malakis, I. A. Hadjiagapiou, S. S. Martinos, N. G. Fytas
Faculty of Physics, University of Athens, Athens, Greece
The linewidths and pintegrated intensities of the d-d transitions in photoacoustic spectra of polyamine copper(II) complexes
N. Guskos1,2, J. Typek2, G. J. Papadopoulos1, M. Maryniak2, K. Aidinis3
1Solid State Section, Department of Physics, University of Athens, Athens, Greece
2Institute of Physics, Szczecin University of Technology, Szczecin, Poland
3Applied Physics Section, Department of Physics, University of Athens, Athens, Greece
The kinetics of nucleation in inhomogeneous media based on the classical Avrami model
R.Z. Rogowski
Institute of Physics, Technical University of Szczecin, Szczecin, Poland
FMR study of γ-Fe2O3 magnetic nanoparticles in a multiblock poly(ether-ester) copolymer matrix
N. Guskos1,2, J. Typek2, M. Maryniak2, Z. Roslaniec3,
D. Petridis4, M. Kwiatkowska3
1Solid State Section, Department of Physics, University of Athens, Athens, Greece
2Institute of Physics, Szczecin University of Technology, Szczecin, Poland
3Institute of Engineering Material Sciences, Technical University of Szczecin, Szczecin, Poland
4NCSR "Demokritos", Athens, Greece
Anomalous relaxation in dielectrics. Equations with fractional derivatives
V.V. Novikov1, K.W. Wojciechowski2, O.A. Komkova1, T. Thiel3
1Odessa National Polytechnical University, Odessa, Ukraine
2Institute of Molecular Physics, Polish Academy of Sciences, Poznań, Poland
3Poznań University of Technology, Poznań, Poland
Persistent photoconductivity in a InP:Fe single layer structure at room temperature
G. E. Zardas1, P. H. Yannakopoulos2, CH. I. Symeonides1, O. Csabay3, P. C. Euthymiou1
1University of Athens, Physics Department, Solid State Section, Athens, Greece
2T.E.I. Piraeus, Computer Systems Engineering Department, Greece
3Department of Microelectronics, Slovak Technical University, Bratislava
Structure recognition in MD-simulated materials. A case study of BO3 triangles in borate glasses
G. Bergmański1, M. Białoskórski1,2, M. Rychcik-Leyk1, J. Rybicki1,2
1Department of Solid State Physics, Faculty of Technical Physics and Applied Mathematics,
Gdańsk University of Technology, Gdańsk, Poland
2TASK Computer Centre, Gdańsk, Poland
FMR study of agglomerated nanoparticles in a Fe3C/C system
N. Guskos1,2, J. Typek2, M. Maryniak2, U. Narkiewicz3, I. Kucharewicz3, R. Wróbel3
1Solid State Section, Department of Physics, University of Athens, Athens, Greece
2Institute of Physics, Szczecin University of Technology, Szczecin, Poland
3Institute of Chemical and Environment Engineering, Technical University of Szczecin, Szczecin, Poland
Nonlinear current oscillations in the fractal Josephson junction
S. P. Kruchinin1, V. F. Klepikov2, V. E. Novikov2, D. S. Kruchinin3
1Bogolyubov Institute for Theoretical Physics, Kyiv, Ukraine
2Scientific and Technological Centre of Electrophysics, NASU, Kharkiv, Ukraine
3National Taras Shevchenko University, Kyiv, Ukraine
Development trends in pressure-sensitive adhesive systems
Z. Czech1, R. Milker2
1Szczecin University of Technology, Polymer Institute, Szczecin, Poland
2Klebstoff GmbH, Horhausen, Germany
Some implications of the nonlinear properties of SASD crystals
I. E. Lipiński, J. Kuriata
Institute of Physics, Szczecin University of Technology, Szczecin, Poland
Photoacoustic study of a new neodymium(III) hydrazone complex
N. Guskos1,2, D.G. Paschalidis3, J. Majszczyk2, J. Typek2, M. Maryniak2
1Solid State Section, Department of Physics, University of Athens, Athens, Greece
2Instytute of Physics, Szczecin University of Technology, Szczecin, Poland
3Department of Chemistry, Aristotle University, Thessaloniki, Greece
EPR study of chromium centres in CrAPO-5 molecular sieves
B. Padlyak1,3, J. KornatowskI4, G. Zadrożna4, K. Fabisiak1,2, A. Gutsze2
1Department of Physics, Kazimierz Wielki University of Bydgoszcz, Bydgoszcz, Poland
2Department of Biophysics, Ludwik Rydygier Collegium Medicum of the Nicolaus Copernicus University, Bydgoszcz, Poland
3Institute of Physical Optics, L'viv, Ukraine
4Institute of Chemical Technology II, University of Technology, München, Germany
Abstract
The X-band EPR spectra of CrAPO-5 molecular sieves exhibiting high or low sorption capacities for nitrogen and benzene, signed HS and LS samples, respectively, were studied at 300 and 77 K. The EPR spectra of the as-synthesized HS and LS samples consist of a broad intense signal (geff = 1.971 ± 0.001, ΔHpp ≅ 500 G) with a positive lobe at geff = 5.15±0.01, assigned to Cr3+ (3d3, 4F3/2) ions with a rhombic distorted octahedral coordination. Calcined samples show an additional narrow EPR signal of axial symmetry with g|| = 1.971 ± 0.001 and g⊥ = 1.959 ± 0.001, also assigned to Cr5+ (3d1, 2D3/2) ions in an octahedral coordination. HS samples heated under vacuum exhibit a decrease in the intensity of the Cr3+ lines as well as several new signals. Two of them are characterized by an axially symmetric g factor and belong to Cr5+ centres in square pyramidal and tetrahedral coordination. The third signal may be assigned to Cr+ (3d5, 6S5/2) ions. The EPR spectra of LS samples heated under vacuum show a strong decrease in the intensity of Cr3+ lines and only the two signals of Cr5+ centres in the same coordination. Their g factors are similar to those in the HS samples. Thermal treatment under oxidative (O2) and reductive (H2) atmospheres reveal the reproducible redox properties of Cr5+ ions and a high stability of Cr3+ ions, especially in the HS samples.
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Download article (PDF)Magnetic resonance study of SbVO5 thermal decomposition products
J. Typek1, E. Filipek2, M. Maryniak1, N. Guskos1,3
1Institute of Physics, Szczecin University of Technology, Szczecin, Poland
2Department of Inorganic and Analytical Chemistry, Szczecin University of Technology, Szczecin, Poland
3Solid State Section, Department of Physics, University of Athens, Athens, Greece
Temperature dependence of the FMR spectra of Fe3O4 and Fe3C nanoparticle magnetic systems in copolymer matrices
T. Bodziony1, N. Guskos1,2, J. Typek1, Z. Roslaniec3, U. Narkiewicz4, M. Kwiatkowska3, M. Maryniak1
1Institute of Physics, Szczecin University of Technology, Szczecin, Poland
2Solid State Section, Department of Physics, University of Athens, Athens, Greece
3Institute of Material Engineering, Szczecin University of Technology, Szczecin, Poland
4Department of Chemical Engineering, Szczecin University of Technology, Szczecin, Poland.
