Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Aleksander Guskos"'
Autor:
Rafał Pelka, Urszula Nowosielecka, Kamila Klimza, Izabela Moszyńska, Konstantinos Aidinis, Grzegorz Żołnierkiewicz, Aleksander Guskos, Nikos Guskos
Publikováno v:
Crystals, Vol 14, Iss 4, p 363 (2024)
A series of nanocrystalline iron oxide samples (M1–M5) which differ from each other in average crystallite size (from 26 to 37 nm) was studied. The raw material was nanocrystalline iron with an average crystallite size equal to 21 nm promoted with
Externí odkaz:
https://doaj.org/article/db709aa0169c4da9933c05a783061c6d
Autor:
Nikos Guskos, Grzegorz Zolnierkiewicz, Ewelina Kusiak-Nejman, Aleksander Guskos, Konstantinos Aidinis, Marta Bobrowska, Paweł Berczynski, Agnieszka Wanag, Iwona Pelech, Urszula Narkiewicz, Antoni W. Morawski
Publikováno v:
Materials, Vol 15, Iss 6, p 2244 (2022)
Nanocomposites based on nanocrystalline titania modified with graphene-related materials (reduced and oxidized form of graphene) showed the existence of magnetic agglomerates. All parameters of magnetic resonance spectra strongly depended on the mate
Externí odkaz:
https://doaj.org/article/61bcb313254c4b18ad22d20e65ea6dd7
Autor:
Niko Guskos, Urszula Narkiewicz, Grzegorz Zolnierkiewicz, S. Glenis, Ewelina Kusiak-Nejman, Aleksander Guskos, Agnieszka Wanag, Antoni W. Morawski, Konstantinos Aidinis
Publikováno v:
Reviews on Advanced Materials Science, Vol 60, Iss 1, Pp 794-800 (2021)
DC magnetization of a series of titania nanocomposites modified with reduced graphene oxide (rGO) has been investigated. Hysteresis loops observed at room temperature disappeared at low temperatures. At a temperature of about 100 K, a phase transitio
Autor:
Malwina Pilarska, Grzegorz Zolnierkiewicz, Aleksander Guskos, Ewelina Kusiak-Nejman, Antoni W. Morawski, Janusz Typek, Niko Guskos
Publikováno v:
Reviews on Advanced Materials Science, Vol 58, Iss 1, Pp 107-122 (2019)
TiO2 is the most promising oxide semiconductor extensively used as photocatalyst in solar energy conversion into hydrogen and electric energy as well as in degradation of contaminants in water. To increase its efficiency, carbon dopants are applied.
Autor:
Grzegorz Żołnierkiewicz, Dariusz Moszyński, Janusz Typek, Paweł Adamski, Aleksander Guskos, Niko Guskos
Publikováno v:
Journal of Solid State Chemistry. 241:205-211
Four nanocomposites containing mixed phases of Co 3 Mo 3 N and Co 2 Mo 3 N doped with chromium have been prepared. A linear fit is found for relation between Co 2 Mo 3 N and chromium concentrations. The magnetization in ZFC and FC modes at different
Autor:
Janusz Typek, K. Aidinis, D. Dolat, Paweł Berczyński, Grzegorz Zolnierkiewicz, Antoni W. Morawski, N. Guskos, Konrad Kruk, Sylwia Mozia, Aleksander Guskos
Publikováno v:
Materials Science-Poland, Vol 34, Iss 2, Pp 242-250 (2016)
The (nCo,N)-TiO2(n = 1, 5 and 10 wt.% of Co) nanocomposites were investigated by magnetic resonance spectroscopy in 4 K to 290 K range. Analyses of ferromagnetic/electron paramagnetic resonance (FMR/EPR) spectra in terms of four Callen lineshape comp
Autor:
N. Guskos, Grzegorz Zolnierkiewicz, Janusz Typek, Rafał Pelka, Walerian Arabczyk, Aleksander Guskos, Kielbasa Karolina
Publikováno v:
Materials Science-Poland, Vol 34, Iss 1, Pp 6-12 (2016)
Samples obtained by nitriding of promoted nanocrystalline iron and the nitrides reduction at various nitriding potential in terms of thermodynamic parameters were investigated by electron paramagnetic resonance/ferromagnetic resonance (EPR/FMR) metho
Autor:
Grzegorz Zolnierkiewicz, Antoni W. Morawski, Janusz Typek, Niko Guskos, Aleksander Guskos, D. Dolat, Paweł Berczyński, C. J. Aidinis, Sylwia Mozia
Publikováno v:
Nukleonika, Vol 60, Iss 3, Pp 411-416 (2015)
Three nCo,N-TiO2 nanocomposites (where cobalt concentration index n = 1, 5 and 10 wt %) were prepared and investigated by magnetic resonance spectroscopy at room temperature. Ferromagnetic resonance (FMR) lines of magnetic cobalt agglomerated nanopar
Autor:
N. Guskos, Jolanta Baranowska, Paweł Berczyński, Janusz Typek, S. Fryska, Grzegorz Zolnierkiewicz, Aleksander Guskos
Publikováno v:
Materials Science-Poland, Vol 32, Iss 2, Pp 198-205 (2014)
Four samples of austenite coatings deposited by reactive magnetron sputtering on silicon substrate at four different temperatures and pressures were investigated by ferromagnetic resonance (FMR) method at room temperature. The expanded austenite phas
Autor:
Grzegorz Zolnierkiewicz, Aleksander Guskos, Barbara Grzmil, Niko Guskos, Janusz Typek, Paweł Berczyński, Antoni W. Morawski, D. Dolat
Publikováno v:
Open Chemistry, Vol 11, Iss 12, Pp 1996-2004 (2013)
Nanoparticles of nitrogen-modified TiO2 (N-doped TiO2) calcined at 300°C and 350°C, have been prepared with and without water rinsing. Samples were characterized by x-ray diffractrometry (XRD) and optical spectroscopy. The electron paramagnetic res