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Wyszukujesz frazę "Ślusarski, T." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    DFT Study of Octanuclear Molecular Chromium-Based Ring Using New Pseudopotential Parameters
    Autorzy:
    Brzostowski, B.
    Ślusarski, T.
    Kamieniarz, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1427181.pdf
    Data publikacji:
    2012-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Xx
    71.15.Mb
    73.22.-f
    75.30.Et
    Opis:
    We present a comprehensive study of magnetic properties of $Cr_8F_8(Piv)_{16}$ molecular ring (in short Cr8) using the package SIESTA with several choices of chromium pseudopotential parameters. We use generalized gradient approximation to investigate properties of Cr8 ring approximated by replacing the pivallic group by H atoms (hydrogen saturation). For different choice of chromium pseudopotential we examine the electronic and magnetic properties of Cr8 molecule. We compare highest occupied molecular orbital and the lowest unoccupied molecular orbital gaps for both spin channels, magnetic moments, and exchange interaction parameter J. The influence of pseudopotential parameters on obtained results is discussed. Finally our results are compared with other theoretical approaches and experimental data.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 5-6; 1115-1117
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of the Package SIESTA to Linear Models of a Molecular Chromium-Based Ring
    Autorzy:
    Ślusarski, T.
    Brzostowski, B.
    Tomecka, D.
    Kamieniarz, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1534920.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Xx
    71.15.Mb
    73.22.-f
    75.30.Et
    Opis:
    We investigate for the first time the electronic and magnetic properties of the linear models of $Cr_8F_8(Piv)_{16}$ molecular ring using the SIESTA package. In the first step the proper values of the SIESTA parameters and the optimal basis set needed for the convergence of the total energy are established. Next the estimates of the magnetic coupling J confirming the previous density functional theory calculations are presented.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 967-968
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural and Magnetic Properties of Co Thin Films on Au(111) Substrates
    Autorzy:
    Walczak, A.
    Ślusarski, T.
    Lehmann-Szweykowska, A.
    Kamieniarz, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1489873.pdf
    Data publikacji:
    2012-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.70.-i
    68.35.-p
    Opis:
    The structural and magnetic properties of thin Co films grown on Au(111) substrates are investigated using ab initio local-spin-density calculations in the generalized gradient approximation. It is shown that a large lattice intermismatch between Co and Au(111) leads to a strong contraction of the interlayer distances within the Co layer, which adopts either the hexagonal close-packed (α-phase) or the face-centered cubic (β-phase) structure of bulk Co. Magnetic moments in the Co layer are increased beyond their value in bulk Co, the enhancement being strongest at the free surface and at the Co/Au interface, and more modest in the central part of the adlayer. Moderating influence of capping Ag layers on the structure and the magnetic properties of the films has also been considered. It is shown that Ag capping reduces the magnetic moments in comparison to uncovered Co/Au systems.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 3; 653-659
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anisotropy, Geometric Structure and Frustration Effects in Molecule-Based Nanomagnets
    Autorzy:
    Kamieniarz, G.
    Kozłowski, P.
    Antkowiak, M.
    Sobczak, P.
    Ślusarski, T.
    Tomecka, D.
    Barasiński, A.
    Brzostowski, B.
    Drzewiński, A.
    Bieńko, A.
    Mroziński, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1426672.pdf
    Data publikacji:
    2012-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Xx
    75.10.Jm
    75.10.Pq
    75.40.Cx
    Opis:
    In this paper we review our results of comprehensive study of molecular nanomagnets recently synthesized in the form of the chromium-based molecules and bimetallic copper-containing chains as well as we present some new findings. We focus on effects of anisotropy, geometry and frustration appearing in various thermodynamic properties of the nanoscale magnets which are described by Heisenberg-like spin models and simulated by accurate numerical methods. We show that bond-dependent exchange anisotropy is needed to model magnetic torque in the Cd-doped chromium ring. We argue that only in the limit of infinite rings (n → ∞) frustration can be considered as the opposite to bipartiteness in the odd numbered (3 ≤ n ≤ 9) s = 3/2 quantum spin rings. We analyse the influence of exchange interactions and anisotropy on magnetic susceptibility of bimetallic (S = 3/2, s = 1/2) chains composed of Cu ions linked to different 3d ions by fitting experimental data. We reach the remarkable consistency of the density functional theory estimates of the magnetic couplings in $Cr_8$ molecule and provide strong support to the spin models exploited in the literature.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 5-6; 992-998
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of type, color and location of sticky pheromone traps on male moth catches of Cameraria ohridella
    Autorzy:
    Sukovata, L.
    Slusarski, S.
    Jablonski, T.
    Kolk, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/55115.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    horse chestnut
    Lepidoptera
    location
    trap type
    horse chestnut leafminer
    moth
    invasive pest
    pheromone trap
    Cameraria ohridella
    new pest
    pest
    male
    colour
    Gracillariidae
    Hippocastanaceae
    Aesculus hippocastanum
    Opis:
    The horse chestnut leaf miner, Cameraria ohridella Deschka & Dimic (Lepidoptera: Gracillariidae), is a new invasive pest that has spread all over the Europe over the last 25 years. This paper presents research aimed to: 1) compare the effectiveness of sticky pheromone traps of various types (sizes and colors), 2) determine the effect of a trap location on moth catches. Studies were conducted in Warsaw and Falenty near Warsaw. No trap color preference by male moths was found in tests of white, blue and green barrier traps. Barrier traps had the largest sticky area (32 dm2) in comparison to PL-2 (5.625 dm2) and delta PL-1 (3.4 dm2) traps, thus they caught the highest total number of males, however PL-2 traps were the most effective (268-381 moths/dm2). The results of the studies suggest that to make traps with the C. ohridella pheromone be more effective they should: a) be located on a stem below a tree crown or in its lower part for the first C. ohridella generation, and in crowns for the second and later insect generations, b) be placed in some distance from a tree stem, if located in crowns.
    Źródło:
    Pestycydy; 2009, 1-4; 79-88
    0208-8703
    Pojawia się w:
    Pestycydy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Possibilities to monitoring-control of the horse-chestnut leafminer [Cameraria ohridella] with some acetal derivatives of [8E,10Z]-tetradeca-8,10-dienal
    Autorzy:
    Grodner, J
    Jablonski, T.
    Kolk, A.
    Przybysz, E.
    Slusarski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/55153.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    Cameraria ohridella
    Polska
    Mazovia region
    attractant
    mating disruption
    pheromone trapping technique
    population control
    acetal derivative
    horse chestnut leafminer
    [8E,10Z]-tetradeca-8,10-dienal
    Aesculus hippocastanum
    population monitoring
    Opis:
    This paper shows possibility of utilization ether derivatives of (8E,10Z)-tetradeca-8,10-dienal [2-((7E,9Z)-trideca-7,9-dienyl)-1,3-dioxan (2) and 2-((7E,9Z)-trideca-7,9-dienyl)-4-hydroxy-6-heptyl-5-hexyl-1,3-dioxan (3)] as potential lures for monitoring of horse-chestnut leafminer population. The both propheromones were synthesized at the Institute of Industrial Organic Chemistry (IPO) and then tested in 2006/07 on field trials at several different sites on terrain of Mazovian province. Within the scope of these investigations, acetal 2 was checked at different doses (10, 100, 500 μg) by the pheromone trapping technique, and aldoxane 3 was used both in pheromone trapping (at the dose 50 μg) and mating disruption technique. The good attractiveness properties were obtained for both tested compounds. However, the dose of 2-((7E,9Z)-trideca-7,9-dienyl)-1,3-dioxan had to be a 10 times higher than dose of aldoxane for the same good activity.
    Źródło:
    Pestycydy; 2008, 3-4; 5-13
    0208-8703
    Pojawia się w:
    Pestycydy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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