Autor: Kalska-Szostko, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

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

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Skocz do pozycji: 4.

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

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