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Wyszukujesz frazę "Gazda, A." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Molten Salt Synthesis of Conducting and Superconducting Ceramics
Autorzy:
Kolincio, K.
Gdula, K.
Mielewczyk, A.
Izdebski, T.
Gazda, M.
Powiązania:
https://bibliotekanauki.pl/articles/1536987.pdf
Data publikacji:
2010-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.72.Gh
81.05.Je
Opis:
The functional properties of many interesting materials are the best if the materials are dense and have ordered or partially ordered microstructure. Obtaining such materials most often requires very time and energy consuming technologies, like high temperature and high pressure synthesis. In this work the applicability of the molten salt synthesis method, which is a simple and cheap technology, to the synthesis of the selected high temperature superconductors, ionic conductors and dielectric materials have been discussed.
Źródło:
Acta Physica Polonica A; 2010, 118, 2; 326-327
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conductivity and Superconductivity of (Bi,Pb)$\text{}_{4}$Sr$\text{}_{3}$Ca$\text{}_{3}$Cu$\text{}_{4}$O$\text{}_{x}$ Glass-Ceramics
Autorzy:
Gazda, M.
Kusz, B.
Stizza, S.
Chudinov, S.
Natali, R.
Piętosa, J.
Bienias, A.
Powiązania:
https://bibliotekanauki.pl/articles/2038390.pdf
Data publikacji:
2004-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.72.Hs
72.80.Ng
Opis:
In the (Bi,Pb)-Sr-Ca-Cu-O system, materials of various electrical and superconducting properties may be produced by a glass-ceramic method. Phase composition, structure, microstructure and also electrical properties of the material change as a result of heat treatment. Depending on the heat treatment conditions, either a superconductor with the critical temperature between 8 and 105 K or material without a superconducting transition may be obtained. The properties of the material change so much because during annealing three oxide superconductors belonging to the bismuth family are formed. (Bi$\text{}_{0.8}$Pb$\text{}_{0.2}$)$\text{}_{4}$Sr$\text{}_{3}$Ca$\text{}_{3}$Cu$\text{}_{4}$O$\text{}_{x}$ glass was prepared by a standard technique of quenching homogenized and melted substrates. The glass-ceramic samples were obtained by annealing of the glass beneath melting temperature. Structure and microstructure of glass-ceramic samples were studied with scanning electron microscopy and X-ray diffraction method. Superconducting properties were studied by means of electrical conductivity and magnetization measurements. In this paper we present the influence of the phase composition, structure and microstructure on the electrical conductivity in the normal state and the superconducting properties of (Bi,Pb)$\text{}_{4}$Sr$\text{}_{3}$Ca$\text{}_{3}$Cu$\text{}_{4}$O$\text{}_{x}$ glass-ceramics.
Źródło:
Acta Physica Polonica A; 2004, 106, 5; 617-625
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surfaces of Electron-Emitting Glasses Studied by a Slow Positron Beam
Autorzy:
Pliszka, D.
Gazda, M.
Kusz, B.
Trzebiatowski, K.
Karwasz, G. P.
Deng, W.
Brusa, R. S.
Zecca, A.
Powiązania:
https://bibliotekanauki.pl/articles/2025748.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.60.+z
78.70.Bj
Opis:
Semi-conducting glasses used for electron multipliers and microchannel plate devices are obtained by surface modification of Pb or Bi-reach silicon-based glasses. The reduced layer extends down to 200-500 nm, much more than the effective depth of the electron-emitting layer. By the use of slow-positron beam we monitor the structural changes undergoing in near-to-surface layers after isothermal annealing. The measurements suggest a possible correlation between secondary-electron emission coefficient and the Doppler-broadening S-parameter. On these samples there were also performed atomic force microscopy, secondary electron emission, differential scanning calorimetry, and electric conductivity measurements.
Źródło:
Acta Physica Polonica A; 2001, 99, 3-4; 465-472
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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