Temat: RS - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: $Cu-Fe_3C(Cr_3C_2)$ Bulk Nanocomposites Prepared by Mechanosynthesis Followed by Magnetic Pulse Compaction
Autorzy:: Eremina, M.
Lomayeva, S.
Yelsukov, E.
Paranin, S.
Powiązania:: https://bibliotekanauki.pl/articles/1375351.pdf
Data publikacji:: 2014-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 77.84.Lf
81.07.Bc
81.20.Wk
81.40.Rs
Opis:: The $Cu-Fe_3$ and $Cu-Cr_3C_2$ bulk nanocomposites are prepared by consolidation of the mechanically alloyed powders. The structure and properties (density, Vickers microhardness and electrical conductivity) of them have been studied. It is shown that microhardness is equal to 236 HV and 470 HV for a Cu-5 vol.% carbide phase and for a Cu-30 vol.% carbide phase, respectively. The microhardness which can be influenced by the heat treatment temperature depends on the grain size of the Cu matrix. The electrical conductivity values of 38-44% IACS (International Annealing Copper Standard) at room temperature have been found.
Źródło:: Acta Physica Polonica A; 2014, 126, 4; 947-950
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Optical and Structural Characterization of Zinc Oxide Nanostructures Obtained by Atomic Layer Deposition Method
Autorzy:: Wachnicki, Ł.
Witkowski, B.
Gierałtowska, S.
Kopalko, K.
Godlewski, M.
Guziewicz, E.
Powiązania:: https://bibliotekanauki.pl/articles/1492916.pdf
Data publikacji:: 2011-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.07.Bc
82.47.Rs
68.55.-a
81.15.Aa
Opis:: Zinc oxide is a II-VI semiconductor material which is gaining increasing interest in various fields such as biology, medicine or electronics. This semiconductor reveals very special physical and chemical properties, which imply many applications including a transparent electrode in solar cells or LED diodes. Among many applications, ZnO is also a prospective material for sensor technology, where developed surface morphology is very advantageous. In this work we present ZnO nanowires growth using atomic layer deposition method. ZnO nanowires were obtained using controlled physical properties. As a substrate we used gallium arsenide with gold-gallium eutectic droplets prepared on the surface at high temperature. To obtain the eutectic solution there was put a gold thin film on GaAs through the sputtering and then we annealed the sample in a nitrogen gas flow. The so-prepared substrate was applied for growth of ZnO nanowires. We used deionized water and zinc chloride as oxygen and zinc precursors, respectively. The eutectic mixture serves as a catalyst for the ZnO nanowires growth. Au-Ga droplets flow on the front of ZnO nanowires. Scanning electron microscopy images show ZnO nanorods in a form of crystallites of up to 1 μm length and a 100 nm diameter. It is the first demonstration of the ZnO nanowires growth by atomic layer deposition using the vapour-liquid-solid approach.
Źródło:: Acta Physica Polonica A; 2011, 120, 5; 905-907
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Investigations and Applications of Nanoperm-Type Soft Magnetic Materials
Autorzy:: Hasiak, M.
Łukiewski, M.
Miglierini, M.
Kaleta, J.
Powiązania:: https://bibliotekanauki.pl/articles/1534084.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.Kf
81.07.Bc
81.40.Rs
85.70.Ay
Opis:: The microstructure and magnetic properties of $Fe_{82}Zr_4Nb_3B_{10}Cu_1,$ $Fe_{80}Zr_4Mn_3B_{12}Cu_1$ and $Fe_{80}Zr_4Ti_3Cu_1B_{12}$ alloys were investigated. Using RALE software the basic parameters of transformers made from nanocrystalline alloys with about 25% and 50% of crystalline phase were calculated. The transformer made from $Fe_{80}Zr_4Ti_3Cu_1B_{12}$ alloys after annealing at 773 K for 1-shows the lowest core losses and highest efficiency.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 829-831
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Electric Conductivity of $(Bi_{1-x}La_{x}FeO_{3})_{0.5}(PbTiO_{3})_{0.5}$ Ceramics Obtained from Mechanosynthesized Nanopowders
Autorzy:: Markiewicz, E.
Hilczer, B.
Balcerzak, M.
Jurczyk, M.
Powiązania:: https://bibliotekanauki.pl/articles/1375503.pdf
Data publikacji:: 2014-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.07.Bc
81.07.Wx
81.20.Ev
75.85.+t
81.40.Rs
Opis:: Electric conductivity of $(Bi_{1-x}La_{x}FeO_{3})_{0.5}(PbTiO_{3})_{0.5}$ ceramics obtained from nanopowders synthesized by high-energy milling from respective oxides was studied in the frequency range 10 mHz ÷ 1 GHz. At room temperatures the low-frequency conductivity was found to be dominated by the contribution from poor-conducting grain boundaries, whereas the contribution in the range 1 kHz ÷ 1 MHz, due to the grain interior, was related by us to the small polaron hopping. Moreover, the electron exchange between ferric and ferrous ions activated at higher frequencies was found to be added to the conductivity above ≈ 1 MHz.
Źródło:: Acta Physica Polonica A; 2014, 126, 4; 971-974
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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