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991.
Karol Załęski Janusz Dubowik Iwona Gościańska Bartłomiej Andrzejewski Tomasz Toliński 《Central European Journal of Physics》2011,9(2):558-561
In this paper we report structural, magnetic and transport properties of strongly textured Ni51Mn36Sn13 thin films. The off-stoichiometric Heusler alloy films with 200 nm thickness were sputter-deposited on a MgO(100) substrate
at 500 K and after annealed at 1000 K in UHV conditions. The textured growth was confirmed by x-ray diffraction in Bragg-Brentano
geometry. The temperature dependence of the magnetic properties was measured by VSM and FMR methods. The electron transport
measurements were carried out in function of temperature in 0 Oe and 50 kOe fields. All measurements corroborate the existence
of the martensitic transformation in the film. Furthermore, transport measurements reveal an influence of the magnetic field
on the transition temperature. 相似文献
992.
Nadhomi Timothy Okeke Chisom Prince Sablik Maciej Szostok Tomasz 《Aequationes Mathematicae》2021,95(6):1095-1117
Aequationes mathematicae - The classical result of L. Székelyhidi states that (under some assumptions) every solution of a general linear equation must be a polynomial function. It is known... 相似文献
993.
Piotr de Silva Prof. Jacek Korchowiec Prof. Tomasz A. Wesolowski 《Chemphyschem》2012,13(15):3462-3465
We introduce a new tool (single exponential decay detector: SEDD) to extract information about bonding and localization in atoms, molecules, or molecular assemblies. The practical evaluation of SEDD does not require any explicit information about the orbitals. The only quantity needed is the electron density (calculated or experimental) and its derivatives up to the second order. 相似文献
994.
Krzysztof Durka Krzysztof Gontarczyk Tomasz Kliś Janusz Serwatowski Krzysztof Woźniak 《应用有机金属化学》2012,26(6):287-292
Lithium diisopropylamine (LDA)‐mediated deprotonation reactions of halogenated cyanobenzyloxy‐benzenes and cyanobiphenyls were investigated. The resultant organolithium derivatives were converted into the corresponding arylboronic acids or silanes. It was found that the stability of the obtained aryllithiums towards isomerization to the respective benzyllithiums depends strongly on the number of fluorine atoms in the phenyl ring and on the position of the cyano group. Halogenated cyanobiaryls were selectively deprotonated in the position flanked by two halogen atoms; however, the yield depended strongly on the reaction conditions. Addition of LDA to the cyano group was observed on the lithiation of 4‐cyano‐3′,5′‐dichlorobiphenyl rather than deprotonation. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
995.
996.
997.
Bogdan Boduszek Tomasz K. Olszewski Waldemar Goldeman Kamila Grzegolec Patrycja Blazejewska 《Tetrahedron》2012,68(4):1223-1229
The efficient synthesis of new imidazol-2-yl-(amino)methylphosphonic acids, phosphonates phosphinate esters and phosphine oxides is described. The synthetic methodology is based on nucleophilic addition of phosphorus species to imidazole-2 derived imines. Additionally, it was discovered that heating the imidazol-2-yl-(amino)methylphosphonates with aqueous HCl or H2SO4 leads to their decomposition resulting in a rupture of the C–P bond, elimination of the phosphorous-containing fragment and formation of the corresponding secondary imidazole-2 alkylamines. A mechanistic pathway for the cleavage is postulated. 相似文献
998.
Grzegorz Leniec Tomasz Skibiński Slawomir M. Kaczmarek Przemyslaw Iwanowski Marek Berkowski 《Central European Journal of Physics》2012,10(2):500-505
Growth conditions and electron paramagnetic resonance investigations of two well oriented KSm(WO4)2 and KEr(WO4)2 single crystals have been presented and discussed. Hyperfine structure of Sm3+ ion was detected and analyzed for angular and temperature dependences. EPR spectra of KEr(WO4)2 and its angular dependence showed the presence of 5 magnetically nonequivalent Er centers in the crystal. A change in the
type of magnetic interactions was analyzed using mixed (Gaussian and Lorentzian) fits of the EPR spectra. 相似文献
999.
Slawomir M. Kaczmarek Lucyna Macalik Hubert Fuks Grzegorz Leniec Tomasz Skibiński Jerzy Hanuza 《Central European Journal of Physics》2012,10(2):492-499
Well oriented KYb(WO4)2 and KTb0.2Yb0.8(WO4)2 single crystals have been investigated for their magnetic and optical properties using the Raman and EPR techniques. The
registered EPR signal is dominated by three lines ascribed to ytterbium ions: one main and two satellites. Tb ions, although
non-paramagnetic, distinctly modify magnetic properties of the KYb(WO4)2 single crystal. Basic parameters of the spin Hamiltonian, including Zeeman and hyperfine terms (g and A matrices) as well the spatial orientation between principal and crystallographic axes systems were determined for both crystals. 相似文献
1000.