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Wyszukujesz frazę "Kalska-Szostko, B." wg kryterium: Autor

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    Tytuł:
    Magnetic nanowires (Fe, Fe-Co, Fe-Ni) : magnetic moment reorientation in respect of wires composition
    Autorzy:
    Kalska-Szostko, B.
    Wykowska, U.
    Satuła, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/148495.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    electrochemistry
    electrodeposition
    Mössbauer spectroscopy
    nanowires
    Opis:
    Magnetic nanowires of Fe, Fe-Co, and Fe-Ni alloy and layered structure were prepared by electrochemical alternating current (AC) deposition method. The morphology of the nanowires in and without the matrix was studied by energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and X-ray diffraction (XRD), respectively. The wires either show strong dependence on the combination of elements deposition (alloy or layered) or chemical composition (Co or Ni). The magnetic properties of the nanostructures were determined on the basis of Mössbauer spectroscopy (MS).
    Źródło:
    Nukleonika; 2015, 60, 1; 63-67
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies of the Magnetite Nanoparticles by Means of Mössbauer Spectroscopy
    Autorzy:
    Kalska-Szostko, B.
    Zubowska, M.
    Satuła, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044707.pdf
    Data publikacji:
    2006-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.18.Fs
    75.50.Tt
    78.66.Vs
    Opis:
    The magnetite nanoparticles were prepared by modified Massart's method in water and in alcohol. The influence of the condition of preparation on the properties of magnetite nanoparticles were investigated by Mössbauer spectroscopy. The size of the particles were determined by transmission electron microscopy. It was shown that the particles size in the alcoholic reaction is smaller than in aqueous reaction. Moreover, the increase in the reaction time improves the stoichiometry of magnetite nanoparticles.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 3; 365-369
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemical preparation of core - shell nanoparticles
    Autorzy:
    Kalska-Szostko, B.
    Wykowska, U.
    Basa, A.
    Szymański, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/147340.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    core-shell nanoparticles
    magnetic nanoparticles
    Mössbauer spectroscopy
    Opis:
    Nanoparticles obtained during layer-by-layer chemical deposition have been obtained. The particles diameter varied between 5 nm and 9 nm and can be tuned by changing molarity of the synthesis ingredients. The intention was the creation of copper or iron oxide layer during the process. Layer composition were changed using Cu rich or Fe rich ingredients. Magnetic properties of the particles strongly depend on the composition of covered material, indicating for their core-shell structure.
    Źródło:
    Nukleonika; 2013, 58, 1; 35-38
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mössbauer Studies of Core-Shell Nanoparticles.
    Autorzy:
    Kalska-Szostko, B.
    Cydzik, M.
    Satuła, D.
    Giersig, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1506313.pdf
    Data publikacji:
    2011-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.80.Ej
    81.07.-b
    75.75.-c
    81.16.-c
    Opis:
    The ferrite magnetic nanoparticles with core-shell structures were obtained in two step preparation process. The Mössbauer spectra obtained for particles of pure maghemite or magnetite and two layered core-shell one the magnetite on maghemite and maghemite on magnetite are very different from each other. The presented results show that interparticle and intraparticle interaction plays important role in overall magnetic properties as well.
    Źródło:
    Acta Physica Polonica A; 2011, 119, 1; 15-17
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of hyperfine fields and atomic ordering in NiMnFeGe exhibiting martensitic transformation
    Autorzy:
    Satuła, D.
    Szymański, D.
    Rećko, K.
    Olszewski, W.
    Kalska-Szostko, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/147672.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    X-ray diffraction
    Mössbauer spectroscopy
    martensitic transition
    atomic ordering
    Opis:
    The hyperfi ne fi elds and atomic ordering in Ni1−xFexMnGe (x = 0.1, 0.2, 0.3) alloys were investigated using X-ray diffraction and Mössbauer spectroscopy at room temperature. The X-ray diffraction measurements show that the samples with x = 0.2, 0.3 crystallized in the hexagonal Ni2In-type of structure, whereas in the sample with x = 0.1, the coexistence of two phases, Ni2In- and orthorhombic TiNiSi-type of structures, were found. The Mössbauer spectra measured with x = 0.2, 0.3 show three doublets with different values of isomer shift (IS) and quadrupole splitting (QS) related to three different local surroundings of Fe atoms in the hexagonal Ni2In-type structure. It was shown that Fe atoms in the hexagonal Ni2In-type structure of as-cast Ni1−xFexMnGe alloys are preferentially located in Ni sites and small amount of Fe is located in Mn and probably in Ge sites. The spectrum for x = 0.1 shows the doublets in the central part of spectrum and a broad sextet. The doublets originate from the Fe atoms in the paramagnetic state of hexagonal Ni2In-type structure, whereas the sextet results from the Fe atoms in orthorhombic TiNiSi-type structure.
    Źródło:
    Nukleonika; 2015, 60, 1; 127-131
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Magnetic Properties of Iron Oxide Nanoparticles Prepared by Wet Chemical Method
    Autorzy:
    Satuła, D.
    Kalska-Szostko, B.
    Szymański, K.
    Dobrzyński, L.
    Kozubowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1811606.pdf
    Data publikacji:
    2008-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    76.80.+y
    61.46.Df
    75.75.+a
    Opis:
    The magnetic properties of iron oxide nanoparticles prepared by the chemical decomposition of the iron chlorides with the ratio $Fe^{3+}$/$Fe^{2+}$=2.25 were studied by means of transmission electron microscopy, X-ray diffraction and Mössbauer spectroscopy in- and without external magnetic field. The transmission electron microscopy studies show that the nanoparticles have spherical shape with diameter about 13 nm. The transmission electron microscopy and X-ray diffraction patterns are composed of lines that could be indexed within the cubic spinel structure. The room temperature Mössbauer spectrum shows the coexistence of the broad magnetically split part and superparamagnetic doublet. The in-field Mössbauer measurements carried out in the temperature range from room temperature down to 13 K show a gradual increase in the spin canting on the surface of the nanoparticles and decrease in the intensity of the superparamagnetic doublet. The sample was subjected to annealing process performed at elevated temperature in air atmosphere in order to change the microstructure of the nanoparticles and in consequence to change the magnetic properties of the sample. The annealing process leads to the decrease in the value of quadrupole splitting of the superparamagnetic doublets.
    Źródło:
    Acta Physica Polonica A; 2008, 114, 6; 1615-1621
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hyperfine interactions in (Cr0.9957Fe0.01)3 + xSi1 - x
    Autorzy:
    Satuła, D.
    Szymański, K.
    Olszewski, W.
    Kalska-Szostko, B.
    Waliszewski, J.
    Rećko, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/147344.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    A15 structure
    Cr-Fe-Si alloys
    Mössbauer spectroscopy
    X-ray diffraction
    Opis:
    X-ray diffraction measurements and Mossbauer spectroscopy with external magnetic field were carried out on (Cr0.99 57Fe0.01)3+xSi-x alloys. The Mossbauer spectra for A15 type of structure can be described by superposition of single line S(1) and two doublets D(1) and D(2). The relative ratio of the S(1) and D(2) strongly depends on x. The nearest neighbours of these components have been identified. It was shown that 57Fe atoms preferentially locate in Cr positions for x less-than or equal to 0.0, while for x greater 0.0 iron atoms are distributed both in Cr and Si positions. It was shown that, in A15 structure, one Cr atom located in the 57Fe nearest neighbours (n.n.) decreases isomer shift by (0.022 plus or minus 0.002) mm/s, while one Si in n.n. increases isomer shift by (0.09 plus or minus 0.01) mm/s. The measured Mossbauer spectra of bcc Cr-Si indicate that atoms are randomly distributed and can be well described as superposition of single lines, related to various local environments of 57Fe atoms.
    Źródło:
    Nukleonika; 2013, 58, 1; 73-76
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrochemical Deposition of Nanowires in Porous Alumina
    Autorzy:
    Kalska-Szostko, B.
    Brancewicz, E.
    Mazalski, P.
    Sveklo, J.
    Olszewski, W.
    Szymański, K.
    Sidor, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1809497.pdf
    Data publikacji:
    2009-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    82.45.-h
    62.23.Hj
    82.45.Qr
    81.07.-b
    75.75.+a
    Opis:
    Electrochemical deposition is a very efficient method for producing many types of modern materials. The method is not expensive and does not have a limit for sample size. In our work the preparation of Ni, Co and Fe nanowires is presented. The obtained nanowires had different diameter and length which were tunable by template porous material and time of deposition, respectively. The quality of the prepared wires was dependent also on deposition mode. The smallest wires of the diameter around 40 nm were prepared in porous anodic alumina oxide obtained from oxalic acid. The largest ones, around 120 nm, were produced in phosphoric acid. The length could be as large as the thickness of the oxide and reached up to about 1 μm. The morphology of wires was studied by atomic force microscopy and scanning electron microscopy. The magnetic characterization was done with usage of magnetic force microscopy and the Mössbauer spectroscopy. The wires show magnetization along their growth direction.
    Źródło:
    Acta Physica Polonica A; 2009, 115, 2; 542-544
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrical and Magnetic Properties of Selected Fe-Based High Entropy Alloys
    Autorzy:
    Perzyńska, K.
    Go, A.
    Szymański, K.
    Biernacka, M.
    Hawełek, Ł.
    Kalska-Szostko, B.
    Oleszak, D.
    Rećko, K.
    Waliszewski, J.
    Zaleski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1375573.pdf
    Data publikacji:
    2014-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.23.-k
    71.55.Ak
    72.15.-v
    72.15.Eb
    75.50.Bb
    82.80.Ej
    Opis:
    The electrical and magnetic properties of $Fe_{0.5}A_{0.5}$ alloys are presented, where the A corresponds to various compositions of the elements: A = (Al, Si, V, Cr, Co, Ga, Ni, Ge). The system is closely related to the known family of high entropy alloys. The samples were synthesized by arc melting and/or melt spinning technique and exhibit a regular type of crystal structure. Lattice parameters are systematically smaller than the estimates based on metallic radiuses of the elements. Temperature dependences of resistivities show maxima for some compositions. This behavior is consistent with results of electronic structure calculations, where a low density of states at the Fermi level were predicted. Also the measured magnetic moments are in good agreement with results of calculations. It is thus presented that some physical properties can be designed by appropriate choice of the chemical composition within the same simple structure.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 4; 999-1004
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation and Characterization of Magnetic Nanoparticles
    Autorzy:
    Khmara, I.
    Kubovcikova, M.
    Koneracka, M.
    Kalska-Szostko, B.
    Zavisova, V.
    Antal, I.
    Rajnak, M.
    Dankova, Z.
    Kavecansky, V.
    Omastova, M.
    Kopcansky, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030437.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    47.65.Cb
    61.05.Qr
    61.05.cp
    Opis:
    The magnetic nanoparticles with core diameter 10 nm were modified by poly-L-lysine to bind antibody for cancer cell detection. Prepared biocompatible magnetic fluid (MFPLL) was characterized by dynamic light scattering method to obtain the particle size distribution. The microstructure of the MNPs and MFPLL samples were studied by transmission electron microscopy, X-ray diffraction and Mössbauer spectroscopy. Magnetic properties of the samples were measured by SQUID magnetometer and superparamagnetic behaviour of the samples was confirmed.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 704-706
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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