Autor: Pizúrová, N. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Properties of $Ni_3Fe$ Nanoparticles Prepared by Chemical Method
Autorzy:: Zábranský, K.
Schneeweiss, O.
Pizůrová, N.
David, B.
Powiązania:: https://bibliotekanauki.pl/articles/1507208.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.05.cp
61.46.-w
75.20.En
75.50.Bb
Opis:: $Ni_3Fe$ nanoparticles prepared by calcination of the iron-nickel oxalate were investigated by X-ray diffraction, Mössbauer spectroscopy and magnetic measurements. The high temperature X-ray diffraction shows two stages of transformation of oxalate: (i) amorphization and (ii) formation of nanocrystalline $Ni_3Fe$ particles. The development of coercivity, magnetization and mean coherence length ( ≈ particle size) is discussed.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 785-786
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Nanocrystalline α-Fe Layer Examined by Mössbauer Spectrometry
Autorzy:: David, B.
Schneeweiss, O.
Pizúrová, N.
Rek, A.
Kudrle, V.
Jašek, O.
Powiązania:: https://bibliotekanauki.pl/articles/1381817.pdf
Data publikacji:: 2014-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 52.75.Hn
73.63.Bd
76.80.Pj
Opis:: A few micrometers thick nanocrystalline α-Fe layer with the mean crystallite size $d_{XRD}$=14 nm was deposited in low-pressure microwave plasma, using $Fe(CO)_{5}$ vapour. Its nanocrystalline character was proved on its surface under SEM (surface was formed of deposited nanoparticles) and in its volume using TEM (deposited nanoparticles were stacked up, creating columns). No significant iron oxide phases were observed in the transmission $\text{}^{57}Fe$ Mössbauer spectrum measured at 5 K nor in the surface-sensitive $\text{}^{57}Fe$ conversion electron Mössbauer spectrum measured at 293 K.
Źródło:: Acta Physica Polonica A; 2014, 126, 1; 94-95
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Thermal Stability and Mechanism of Thermally Induced Crystallization of $Fe_{73.5}Cu_1Nb_3Si_{15.5}B_7$ Amorphous Alloy
Autorzy:: Vasić, M.
Minić, D.
Blagojević, V.
Žák, T.
Pizúrová, N.
David, B.
Powiązania:: https://bibliotekanauki.pl/articles/1402117.pdf
Data publikacji:: 2015-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 64.70.dg
64.70.kd
64.70.pe
Opis:: Investigation of thermal stability of the alloy revealed stepwise crystallization process, manifested by two distinct complex exothermic peaks in differential scanning calorimetry curves. Kinetic parameters of individual crystallization steps were found using the Kissinger and Vyazovkin methods. Structural characterization of thermally treated samples showed formation of different iron-based phases including α-Fe(Si), Fe₂B, Fe₁₆Nb₆Si₇ and Fe₂Si and some metastable intermediary species. Morphology characterization of the surface and cross-section of the thermally treated samples showed granulated structure composed of several different phases and indicated occurrence of impingement effects during crystal growth. Value of estimated lifetime suggested very high stability against crystallization at room temperature and abrupt decrease of lifetime with temperature increase.
Źródło:: Acta Physica Polonica A; 2015, 128, 4; 657-660
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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