Autor: Slynko, I. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: AC Magnetic Susceptibility Studies of $Ge_{1-x-y}Sn_{x}Mn_{y}Te$ Mixed Crystals
Autorzy:: Kilanski, L.
Arciszewska, M.
Domukhovski, V.
Dobrowolski, W.
Slynko, V.
Slynko, I.
Powiązania:: https://bibliotekanauki.pl/articles/1811934.pdf
Data publikacji:: 2008-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.20.Fr
72.80.Ga
75.40.Gb
75.50.Lk
75.50.Pp
Opis:: We present preliminary studies of magnetic and transport properties of $Ge_{1-x-y}Sn_xMn_yTe$ mixed crystals with 0.091 ≤ x ≤ 0.105 and 0.012 ≤ y ≤ 0.115. Qualitative analysis of our experimental results showed the appearance of a spin-glass phase at T < 50 K. The transport characterization (resistivity and Hall effect measurements) showed that the investigated samples had semimetallic p-type conductivity with relatively large carrier concentrations (p > $10^{21} cm^{-3}$) and low mobilities (μ < 100 $cm^2 V^{-1} s^{-1}$). The dependence of transport properties on the chemical composition of the samples was observed.
Źródło:: Acta Physica Polonica A; 2008, 114, 5; 1145-1150
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Features of Energy Spectrum of Pb$\text{}_{1-x}$Mn$\text{}_{x}$Te Doped with V
Autorzy:: Artamkin, A. I.
Dobrovolsky, A. A.
Dziawa, P.
Story, T.
Slynko, E. I.
Slynko, V. E.
Ryabova, L. I.
Khokhlov, D. R.
Powiązania:: https://bibliotekanauki.pl/articles/2046904.pdf
Data publikacji:: 2006-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.20.Nr
71.28.+d
71.55.-i
72.40.+w
Opis:: Recently new effects that are not characteristic of undoped lead telluride, such as the Fermi level pinning, giant negative magnetoresistance, were observed in Pb$\text{}_{1-x}$Mn$\text{}_{x}$Te alloys doped with transition and rare earth elements - Cr, Mo, Yb. We have studied transport and magnetic properties of Pb$\text{}_{1-x}$Mn$\text{}_{x}$Te doped with another transition element - vanadium. A series of Pb$\text{}_{1-x}$Mn$\text{}_{x}$Te(V) samples of different composition and degree of doping was investigated. It was observed that the resistivity demonstrates activation behavior at low temperatures for the samples with considerable amount of vanadium as well as for the samples without vanadium. The activation energy is proportional to the Mn content. In some of the samples, photoconductivity was observed at low temperatures. The results are discussed in terms of a model assuming formation of the impurity level by the vanadium impurity and the effect of the Fermi level pinning by this level.
Źródło:: Acta Physica Polonica A; 2006, 110, 2; 151-156
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Transport and Magnetic Properties of Pb$\text{}_{1-x}$Mn$\text{}_{x}$Te Doped with Cr and Mo
Autorzy:: Artamkin, A. I.
Kozhanov, A. E.
Arciszewska, M.
Dobrowolski, W. D.
Story, T.
Slynko, E. I.
Slynko, V. E.
Khokhlov, D. R.
Powiązania:: https://bibliotekanauki.pl/articles/2038231.pdf
Data publikacji:: 2004-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.28.+d
Opis:: Transport and magnetic properties of Pb$\text{}_{1-x}$Mn$\text{}_{x}$Te (x<0.18) semiconductor alloys doped with Cr or Mo are investigated in a broad range of temperatures and magnetic fields. In PbMnTe(Cr) alloys the Fermi level may be pinned either in the conduction band or in the energy gap, depending on Mn concentration. In PbMnTe(Mo) alloys the pinning of the Fermi level is observed in the valence band as well as in the energy gap. In the latter case persistent photoconductivity is observed at low temperatures. The analysis of the temperature dependence of magnetic susceptibility shows that PbMnTe alloys doped with Cr or Mo are Curie-Weiss paramagnets revealing weak antiferromagnetic interactions between magnetic ions.
Źródło:: Acta Physica Polonica A; 2004, 106, 2; 223-231
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The Role of Frustration in Magnetism of Ge$\text{}_{1-x}$Cr$\text{}_{x}$Te Semimagnetic Semiconductor
Autorzy:: Kilanski, L.
Górska, M.
Dobrowolski, W.
Arciszewska, M.
Domukhovski, V.
Anderson, J. R.
Butch, N. P.
Podgórni, A.
Slynko, V. E.
Slynko, E. I.
Powiązania:: https://bibliotekanauki.pl/articles/2048082.pdf
Data publikacji:: 2011-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.40.Cx
75.40.Gb
75.50.Lk
75.50.Pp
Opis:: We present preliminary studies of magnetic properties of Ge$\text{}_{1-x}$Cr$\text{}_{x}$Te semimagnetic semiconductors with low chromium content x < 0.026. The static and dynamic magnetometry techniques were employed for the current investigations. The obtained results showed large bifurcations between zero-field cooled and field cooled magnetization curves at temperatures lower than 50 K. The dynamic susceptibility measurements proved via frequency shifting of the peaks that the observed magnetic order at low temperatures was the spin-glass-like state caused by magnetic frustration of the system.
Źródło:: Acta Physica Polonica A; 2011, 119, 5; 654-656
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki