Autor: Rogowska, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The Importance of Indirect Interactions Between Adatoms for Temperature Dependent Processes on Metal Surface
Autorzy:: Rogowska, J. M.
Kołaczkiewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/1892262.pdf
Data publikacji:: 1992-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 82.65.Nz
61.45.+s
68.90.+g
Opis:: The asymptotic form of the indirect pseudopotential interaction of noble metal adatoms on jellium is used to interpret the phenomena arising during thermal treatment of the noble metal submonolayers on W(110). It is shown that the 2D condensation is an activated process. The growth of open clusters needs lower activation energy than the close-packed island formation. Therefore the open clusters should predominate at low temperatures and low coverages, as it is observed experimentally. On the basis of calculation of the total energy of submonolayers as a function of coverage Θ the experimental measurement of desorption energy vs. coverage is discussed.
Źródło:: Acta Physica Polonica A; 1992, 81, 1; 101-108
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Analytical Representation of the Lang-Kohn Density Profiles by the Numerical Fitting
Autorzy:: Rogowska, J. M.
Wojciechowski, K. F.
Maciejewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/1931191.pdf
Data publikacji:: 1994-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.30.+y
73.20.-r
Opis:: The numerical fitting of an analytical function representing electron density profile at a jellium surface to the one tabulated by Lang and Kohn is presented. The two sets of parameters entering the electron density profile is proposed. The first one is obtained by purely numerical fitting, and the second one is calculated under condition that electron density profile must satisfy the Budd-Vannimenus theorem. The obtained parameters are given as analytical functions of the Wigner-Seitz radius r$\text{}_{s}$ describing mean electron density n̅ in a metal (n̅$\text{}^{-1}$ = 4/3πr³$\text{}_{s}$ ). The comparison of presented electron density profile with variational trial function given by Perdew is also discussed.
Źródło:: Acta Physica Polonica A; 1994, 85, 3; 593-601
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Analytical Representation of Charge-Density Profile at a Jellium Surface Covered with the Alkali Metal Submonolayers
Autorzy:: Rogowska, J. M.
Wojciechowski, K. F.
Bogdanów, H.
Powiązania:: https://bibliotekanauki.pl/articles/1887583.pdf
Data publikacji:: 1991-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 77.30.+y
Opis:: A simple trial function for the electron density profiles at the surface of jellium covered by a submonolayer of alkali adatoms is proposed. The values of work function changes due to adsorption, computed by use of this function, are in good agreement with experimental data. It is shown also that the proposed earlier trial functions for the electron density profiles at the metal surface covered by metallic adlayers, give a wrong sequence of surface concentration of adatoms, at which the minimum of work function for different adsorbates occurs.
Źródło:: Acta Physica Polonica A; 1991, 79, 5; 707-716
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Exchange coupling effects in naturally oxidised ultrathin iron film
Autorzy:: Dawczak-Dębicki, H.
Marczyńska, A.
Rogowska, A.
Wachowiak, M.
Nowicki, M.
Pacanowski, S.
Jabłoński, B.
Czajka, R.
Smardz, L.
Powiązania:: https://bibliotekanauki.pl/articles/1050673.pdf
Data publikacji:: 2018-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.70.-i
75.70.Kw
Opis:: Oxidation process of Fe films under atmospheric conditions is depth limited such that an oxide covering layer with a well-defined thickness is formed by which the underlying metal is prevented from further oxidation. Iron thin film with an initial thickness d_{i}=4 nm was deposited onto 1.6 nm - V(110) buffer layer using UHV magnetron sputtering. The planar growth of Fe oxides was revealed by atomic force microscopy. X-ray photoelectron spectroscopy studies performed after 250 days of oxidation revealed formation of a hematite (α-Fe₂O₃) ultrathin film on the metallic rest of iron. Furthermore, low temperature magnetic measurements of the oxidised Fe ultrathin film revealed an exchange anisotropy which is imposed to the metallic rest. As a result, we have observed at low temperatures a shift and broadening of the hysteresis loops due to the exchange interaction at the metal-oxide interface.
Źródło:: Acta Physica Polonica A; 2018, 133, 3; 601-604
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Natural xidation of thin Fe films on V buffer layer
Autorzy:: Dawczak-Dębicki, H.
Marczyńska, A.
Rogowska, A.
Wachowiak, M.
Nowicki, M.
Pacanowski, S.
Jabłoński, B.
Kowalski, W.
Grembowski, J.
Czajka, R.
Smardz, L.
Powiązania:: https://bibliotekanauki.pl/articles/1055062.pdf
Data publikacji:: 2017-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.70.-i
68.55.-a
Opis:: We have studied oxidation kinetics of Fe thin film under atmospheric conditions using the fact that metallic iron is a ferromagnet but ultrathin natural iron oxides are approximately nonmagnetic at room temperature. As a consequence, oxidation is associated with a loss in total Fe magnetic moment. Results show that the sample with an initial Fe thickness equal to 10 nm oxidize relatively fast (time constant τ=0.05 day), whereby a constant amount of 2.5 nm of metal is transformed into oxides. For lower iron initial thickness (d_{i}=4 nm) the time constant for oxidation significantly increases reaching a value of 2 days. Furthermore, X-ray photoelectron spectroscopy studies performed after 144 days of oxidation revealed formation of hematite (α-Fe₂O₃) thin film on the metallic rest of iron.
Źródło:: Acta Physica Polonica A; 2017, 132, 4; 1272-1276
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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