Autor: Marczynska, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Interlayer Exchange Coupling in Nb/Fe Multilayers
Autorzy:: Marczyńska, A.
Pugaczowa-Michalska, M.
Szymański, B.
Majchrzycki, Ł.
Smardz, L.
Powiązania:: https://bibliotekanauki.pl/articles/1030764.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.70.-i
68.55.-a
Opis:: The (110) oriented Nb-Fe multilayers (MLs) with constant Fe and variable Nb sublayer thicknesses were prepared at room temperature using UHV magnetron sputtering. The artificial periodicity was revealed by intense satellite peaks in the low- and high-angle X-ray diffraction patterns. Magnetic hysteresis loop measurements at 5 K revealed antiferromagnetic (AF) exchange coupling of the Fe sublayers for Nb spacer thickness of about 3 monolayers. The corresponding AF coupling energy is equal to about -1.36 mJ/m². The Nb spacer thickness corresponding to the position of the AF peak is in good agreement with ab-initio calculations within localized spin density approximations of exchange-correlation potential.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 605-608
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Modification of Exchange Coupling in Fe/Nb/Fe/Pd Layered Structures using Hydrogen
Autorzy:: Wachowiak, M.
Marczyńska, A.
Dawczak-Dębicki, H.
Pugaczowa-Michalska, M.
Pacanowski, S.
Majchrzycki, Ł.
Smardz, L.
Powiązania:: https://bibliotekanauki.pl/articles/1030744.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.70.-i
68.55.-a
Opis:: Fe/Nb/Fe trilayers were prepared at room temperature using UHV magnetron sputtering. The interlayer exchange coupling energy was determined from a shift of the minor hysteresis loop from the origin. Results showed clear antiferromagnetic (AF) coupling maxima near ım6 and 9 monolayers of Nb spacer. Calculations of the interlayer exchange coupling energy were carried out using ab-initio method with localized spin density approximations of exchange-correlation potential. The experimental results were in good agreement with ab-initio calculations. Furthermore, the position of the AF peaks and coupling energy values could be modified using hydrogen.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 609-612
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: XPS and UPS Valence Band Studies of Nanocrystalline Ni-Ti Alloy Thin Films
Autorzy:: Pacanowski, S.
Skoryna, J.
Szajek, A.
Marczyńska, A.
Dawczak-Dębicki, H.
Werwiński, M.
Majchrzycki, Ł.
Smardz, L.
Powiązania:: https://bibliotekanauki.pl/articles/1030748.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.22.-f
68.55.-a
82.80.Pv
Opis:: In this contribution we study valence bands of in-situ prepared nanocrystalline NiTi and Ni₃Ti alloy thin films using X-ray and ultraviolet photoelectron spectroscopy. Additionally, theoretical valence band of NiTi alloy was calculated by ab-initio methods. The structure and morphology of the samples were studied by X-ray diffraction and atomic force microscopy, respectively. Furthermore, hydrogen absorption and desorption kinetics at a pressure of about 1000 mbar were studied in Pd covered nanocrystalline NiTi alloy thin film using four-point resistivity measurements. Results showed that modifications of the valence bands of the Ni-Ti thin films due nanocrystalline structure can influence on the room temperature hydrogen absorption and desorption kinetics.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 613-616
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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