Autor: Hadžić, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Raman Scattering from ZnO(Fe) Nanoparticles
Autorzy:: Romčević, N.
Kostić, R.
Romčević, M.
Hadžić, B.
Kuryliszyn-Kudelska, I.
Dobrowolski, W.
Narkiewicz, U.
Sibera, D.
Powiązania:: https://bibliotekanauki.pl/articles/1811980.pdf
Data publikacji:: 2008-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 63.20.-e
78.30.Fs
78.67.-n
Opis:: Nanocrystalline samples of ZnO(Fe) were synthesized by wet chemical method. Samples were characterized by X-ray diffraction to determine composition of the samples (ZnO, Fe₂O₃, ZnFe₂O₄) and the mean crystalline size (8-52 nm). In this paper we report the experimental spectra of the Raman scattering (from 200 to $1600 cm^{-1}$). Main characteristics of experimental Raman spectrum in 200 to $1600 cm^{-1}$ spectral region are: sharp peak at $436 cm^{-1}$ and broad two-phonon structure at ≈ $1150 cm^{-1}, typical of ZnO;broad structure below $700 cm^{-1}$ that has different position and shape in case of ZnFe₂O₄ or Fe₂O₃ nanoparticles.
Źródło:: Acta Physica Polonica A; 2008, 114, 5; 1323-1328
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Raman Spectroscopy of Multiphonon Emission Process in Ni-Doped PbTe
Autorzy:: Romčević, N.
Trajić, J.
Hadžić, B.
Romčević, M.
Stojanović, D.
Lazarević, Z.
Kuznetsova, T.
Khokhlov, D.
Rudolf, R.
Anžel, I.
Powiązania:: https://bibliotekanauki.pl/articles/1807841.pdf
Data publikacji:: 2009-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.28.+d
63.20.-e
78.30.-j
Opis:: In this paper, we present room temperature unpolarized Raman scattering spectra of Ni doped PbTe single crystal sample. Crystal of PbTe(Ni) was grown by the Bridgman method. The Ni concentration in the sample used here was 1× $10^{19}$ at./$cm^{3}$. Well resolved peaks appear at about 126, 143, 181, 362 and 724 $cm^{-1}$. The modes at 126 and 143 $cm^{-1}$, which are also observed in other telluride compounds, originate from vibrations in $TeO_2$. We assume that the mode at about 181 $cm^{-1}$ is connected to excitations of a local phonon mode in the vicinity of an impurity atom (donor $Ni^{3+}$ state). Modes at about 362 $cm^{-1}$ and 724 $cm^{-1}$ are the second and fourth harmonic of a local phonon mode, registered here due to multiphonon emission.
Źródło:: Acta Physica Polonica A; 2009, 116, 1; 91-92
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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