Temat: 61.80.Hg - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Neutron Transmutation Doped GaP: Optically Detected Magnetic Resonance Studies
Autorzy:: Heijmink Liesert, B.
Godlewski, M.
Gregorkiewicz, T.
Ammerlaan, C. A. J.
Goldys, E.
Tematy:: 61.80.Hg
76.70.Hb; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1887198.pdf Link otwiera się w nowym oknie
Opis:: The first direct proof for successful neutron transmutation doping (NTD) of GaP is presented on the basis of optically detected magnetic resonance (ODMR). GaP:S samples grown by the liquid encapsulated Czochralski method were irradiated with thermal neutrons and subsequently annealed at 800°C. In the ODMR experiments the transmuted Ge substitutional on Ga sites was detected. The NTD process was also found to create deep acceptors, the nature of which will be tentatively discussed.
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Critical Current Limitations and Irradiation Effects in High-Temperature
Autorzy:: Wiśniewski, A.
Puźniak, R.
Baran, M.
Szymczak, H.
Tematy:: 74.60.Ge
74.60.Jg
61.80.Hg; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1929389.pdf Link otwiera się w nowym oknie
Opis:: The discovery of high-temperature superconductors stimulated many groups of researchers to study properties of these materials. From the basic point of view the most important problem is to clarify the mechanism of high-temperature superconductivity. From the practical point of view the most challenging task is to find mechanisms of strong pinning of the vortices, and thereby to obtain materials with high critical current density. The aim of this paper is to discuss problems connected with critical current limitations and to present possibilities which offer irradiation effects with respect to critical current enhancement.
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: The Luminescence and EPR Characterisation of Neutron Transmutation Doped Gallium Phosphide
Autorzy:: Gołdys, E.
Godlewski, M.
Sienkiewicz, A.
Tematy:: 61.80.Hg
78.55.Cr
76.30.Lh; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1879964.pdf Link otwiera się w nowym oknie
Opis:: The photoluminescence and EPR measurements of neutron irradiated and annealed GaP samples are presented. Both methods confirm the presence of neutral Ge$\text{}_{Ga}$. The EPR spectrum gives also an indication of interstitial Ge.
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Composition of a Clean and Sulphur Covered CuNi(100) Single Crystal Surface
Autorzy:: Godowski, P. J.
Marcus, P.
Tematy:: 82.80.Pv
61.14.Hg
68.35.Dv; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1932121.pdf Link otwiera się w nowym oknie
Opis:: Surface composition of the CuNi(100) single crystal in the temperature range of 893÷1073 K (620÷800°C) has been investigated using low energy electron diffraction and Auger electron spectroscopy methods. A clean sample surface at moderate temperatures reveals small surface copper enrichment, with respect to the bulk Cu-rich composition. For example, at 1006 K (733°C) the copper surface concentration C$\text{}_{Cu}^{s}$, was determined from the quantitative Auger electron spectroscopy analysis as 0.91. After prolonged heating at higher temperatures, the copper surface concentration converges to the bulk value, i.e. at 1073 K (800°C), C$\text{}_{Cu}^{s}$ = C$\text{}_{Cu}^{b}$ = 0.87. Surface segregation of sulphur proceeds from (1 × 1) through p(2 × 2)S/CuNi(100) to c(2 × 2)S/CuNi(100) structures of low energy electron diffraction. In the presence of segregated sulphur the surface concentration of copper is lower.
Dostawca treści:: Biblioteka Nauki

Artykuł

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