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Wyszukujesz frazę "Miotkowska, S." wg kryterium: Autor


Wyświetlanie 1-7 z 7
Tytuł:
On the High Compositional Uniformity of Thick GaAlAs Layers Grown by Liquid Phase Electroepitaxy
Autorzy:
Żytkiewicz, Z. R.
Miotkowska, S.
Powiązania:
https://bibliotekanauki.pl/articles/1923664.pdf
Data publikacji:
1992-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.55.Df
81.10.Dn
Opis:
The results of electroepitaxial growth of thick GaAlAs layers on GaAs substrates are presented. It is experimentally proven that effective convective mixing of the solution volume results in the compositional uniformity of GaAlAs layers, even in spite of the high compositional non-uniformity of the material supplying the solutes (Al, As) to the solution during the growth of the layers. For the first time this allowed us to grow uniform GaAlAs layers with thicknesses up to 200-300 μm in a wide composition range from a small (5 g) amount of solution.
Źródło:
Acta Physica Polonica A; 1992, 82, 5; 765-768
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solubility Limit of Ni in Cd$\text{}_{1-x}$Ni$\text{}_{x}$Te Crystals
Autorzy:
Miotkowska, S.
Miotkowski, I.
Dynowska, E.
Powiązania:
https://bibliotekanauki.pl/articles/1931714.pdf
Data publikacji:
1994-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.10.Fq
61.66.Dk
Opis:
The Cd$\text{}_{1-x}$Ni$\text{}_{x}$Te crystals were grown by the Bridgman method. The investigated samples were cut from five different ingots with nominal contents of nickel varied from 0.005 to 0.05. The investigations were performed using X-ray powder diffraction method and energy dispersive and wavelength dispersive electron microprobe analysis. The samples were ałso examined in a scanning electron microscope. Examinations of wavelength dispersive electron microprobe analysis show that the actual contents of nickel differ from the nominal values. The solubility limit of nickel was determined to be x = 0.005. The precipitates of NiTe were found in samples of a greater content of nickel. Their dimensions were between 5 to 90 micrometers. X-ray powder diffraction measurements did not reveal any significant change of the lattice constant of investigated crystals in comparison with pure CdTe.
Źródło:
Acta Physica Polonica A; 1994, 86, 5; 737-739
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural Properties of Cd$\text{}_{1-x}$Mg$\text{}_{x}$Te and Cd$\text{}_{1-x-y}$Mg$\text{}_{x}$Mn$\text{}_{y}$Te Crystals
Autorzy:
Miotkowska, S.
Dynowska, E.
Miotkowski, I.
Powiązania:
https://bibliotekanauki.pl/articles/1931663.pdf
Data publikacji:
1994-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.10.Fq
61.66.Dk
Opis:
Electron probe microanalysis and X-ray diffraction studies have been performed on samples of ternary Cd$\text{}_{1-x}$Mg$\text{}_{x}$Te (0.05 ≤ x ≤ 0.09) and quaternary Cd$\text{}_{1-x-y}$Mg$\text{}_{x}$Mn$\text{}_{y}$Te (0.025 ≤ x ≤ 0.4; 0.025 ≤ y ≤ 0.7) alloys. The investigated samples were cut from 24 different ingots grown by Bridgman method. Microprobe examinations have revealed significant differences between actual and nominal content of Mg along the longitudinal direction for both ternary and quaternary ingots. In contrast to Mg, for most Cd$\text{}_{1-x-y}$Mg$\text{}_{x}$Mn$\text{}_{y}$Te samples the actual Mn content was within ±5% of nominal content. The lattice constants have been determined by X-ray powder diffraction method. Whereas Cd$\text{}_{1-x-y}$Mg$\text{}_{x}$Mn$\text{}_{y}$Te samples exhibit only zinc blende crystal structure for the entire region of x and y investigated, the Cd$\text{}_{1-x}$Mg$\text{}_{x}$Te alloy has two different structures depending on Mg content; a zinc blende structure below x = 0.5 and a wurtzite structure above it. In both alloys the lattice constant decreases with increasing Mg content.
Źródło:
Acta Physica Polonica A; 1994, 86, 4; 605-611
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Composition Determination of Some A$\text{}^{II}$B$\text{}^{VI}$ Ternary Semiconductors from Quasi-Forbidden Reflection Intensity
Autorzy:
Bąk-Misiuk, J.
Domagała, J.
Dynowska, E.
Miotkowska, S.
Paszkowicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/1931658.pdf
Data publikacji:
1994-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.10.Wg
Opis:
The aim of the present paper is to study the possibility of application of the X-ray quasi-forbidden reflection method to the composition determination of the sphalerite-type Cd$\text{}_{1-x}$M$\text{}_{x}$Te = Mg, Zn, Mn) single crystals. The method is based on the property of quasi-forbidden reflections that their integral intensity is very sensitive to composition and weakly sensitive to crystal lattice defects. An example of application for a Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te single crystal is presented.
Źródło:
Acta Physica Polonica A; 1994, 86, 4; 575-578
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Precipitates in Cd$\text{}_{1-x}$Ni$\text{}_{x}$Se Crystals Grown by the Bridgman Method
Autorzy:
Kachniarz, J.
Dynowska, E.
Miotkowska, S.
Paszkowicz, W.
Miotkowski, I.
Ramdas, A. K.
Powiązania:
https://bibliotekanauki.pl/articles/1921645.pdf
Data publikacji:
1992-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.70.Wp
61.55.Hg
81.10.Fq
Opis:
Single crystals of Cd$\text{}_{1-x}$Ni$\text{}_{x}$Se alloys (x ranging from 0 to 0.075) were investigated using electron microprobe and X-ray diffraction. The analysis shows the presence of Ni-Se precipitates. The solubility limit of Ni is estimated to be 0.008.
Źródło:
Acta Physica Polonica A; 1992, 82, 5; 725-728
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transport and Magnetic Properties of Pb$\text{}_{1-x-y}$Sn$\text{}_{y}$Mn$\text{}_{x}$Te (x ≤ 0.16)
Autorzy:
Łazarczyk, P.
Grodzicka, E.
Arciszewska, M.
Witkowska, B.
Dynowska, E.
Miotkowska, S.
Story, T.
Powiązania:
https://bibliotekanauki.pl/articles/1876221.pdf
Data publikacji:
1995-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Pp
75.50.Lk
Opis:
Hall constant, conductivity and magnetic susceptibility of Pb$\text{}_{1-x-y}$Sn$\text{}_{y}$Mn$\text{}_{x}$Te semimagnetic semiconductor were investigated as a function of Mn content (x = 0.04, 0.09, 0.16, y = (0.7-0.8)) in the temperature range T = (4 - 300) K. A ferromagnetic phase transition takes place at T = 5 K for samples with x = 0.04, at T = 10 K for x = 0.09 and at T = 20 K for x = 0.16. For crystals with x ≥ 0.09 the strong temperature dependence of the Hall constant is observed for temperatures below 40 K. Magnetic field characteristics of the Hall effect is strongly non-linear at T = 4.2 K. No significant temperature or magnetic field dependence of conductivity is observed in the whole temperature range studied. The observed transport anomalies are due to the anomalous Hall effect.
Źródło:
Acta Physica Polonica A; 1995, 87, 2; 469-472
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solubility and Segregation of Co in CdTe-Based Ternary and Quaternary Alloys
Autorzy:
Miotkowska, S.
Dynowska, E.
Miotkowski, I.
Alawadhi, H.
Lewicki, A.
Metcalf, P. A.
Ramdas, A.
Powiązania:
https://bibliotekanauki.pl/articles/2030667.pdf
Data publikacji:
2002-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Dz
81.10.-h
Opis:
Single crystals of Cd$\text{}_{1-x}$Co$\text{}_{x}$Te and Cd$\text{}_{1-x-y}$Co$\text{}_{x}$Mn$\text{}_{y}$Te are characterized with X-ray powder diffraction and electron microprobe to establish compositional dependence of the lattice parameters and deduce Co solubility limit. The experimental compositional profiles are examined on specimens taken from various locations of ingots along their longitudinal axes and compared with normal freezing distributions. The values of Co segregation coefficient are analyzed for both ternary and quaternary alloys in terms of normal freezing mode.
Źródło:
Acta Physica Polonica A; 2002, 101, 5; 735-742
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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