Autor: Gałązka, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Wpływ sposobu zagospodarowania pozostałości pozrębowych na niektóre właściwości chemiczne gleb
The effects of the treatment of logging residues on selected chemical properties of soils
Autorzy:: Pilarek, Z.
Galazka, S.
Gornowicz, R.
Powiązania:: https://bibliotekanauki.pl/articles/805052.pdf
Data publikacji:: 2002
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Opis:: The removal of trees from an area increases the minaralization and leaching processes in the upper layer of the soil. Different treatment methods were applied to logging residues affect those processes. As the investigation shows, the burning of branches enriches the soil in minerals, but the minerals are quickly leached down into deep soil layers. Taking the branches away from the clear cut area leads to an inreased mineralization of organic matter and enchances the leaching of minerals down into the soil. The variants in which branches and needles are left on the clear cut area, have different effects on chemical properties of the soils.
Założenie zrębu zupełnego i związane z tym odsłonięcie gleby leśnej powoduje zintensyfikowanie procesów mineralizacji i wymywania składników odżywczych z wierzchniej warstwy gleby. Różne sposoby postępowania z pozostałościami pozrębowymi regulują ich ilościowe występowanie. Z prezentowanych badań wynika, że spalenie gałęzi z igliwiem wzbogaca gleby w składniki odżywcze lecz ulegają one szybkiemu wymyciu w głąb gleby. Usunięcie gałęzi poza powierzchnię zrębu wpływa na nasilenie procesu mineralizacji i wymywania pierwiastków w głębiej położone warstwy gleby. Warianty zagospodarowania pozostałości polegające na pozostawianiu gałęzi z igliwiem na zrębie, w całości bądź rozdrobnionych, charakteryzują się zmiennym wpływem na właściwości chemiczne gleb.
Źródło:: Zeszyty Problemowe Postępów Nauk Rolniczych; 2002, 486, 1
0084-5477
Pojawia się w:: Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Układ Stop & Go w systemie napędowym mild hybrid samochodu osobowego
Stop&Go in Mild Hybrid passanger car drive system
Autorzy:: Setlak, R.
Gałązka, A.
Powiązania:: https://bibliotekanauki.pl/articles/1373237.pdf
Data publikacji:: 2010
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:: napęd Mild Hybrid
Mild Hybrid
silnik spalinowy
system Stop & Go
Opis:: Main goal of article was design, develop and control of Stop&Go system in Mild Hybrid Drive using supercondensator and starter with permanent magnets. Many researches and tests were done to determine real and then representative cycles of drive in Silesian agglomeration in Gliwice and Zabrze. Road researches enabled carrying out analysis of fluidity of traffic in cities and setting a percentage shares of movement micro stages (selected accelerations, driving with constant speed, braking, stopover). Researches of usefulness of supercondensators' system as an energy source in process of starting an internal combustion engine were done. Usage of supercondensators as an energy source of starting led to improvement of economic indicators of the Stop & Go system. Supercondensator has a 1000 times bigger durability than PbPbO2 battery with around 40 times smaller mass. Researchers of real characteristics of the car Fiat Palio Weekend 1,2 8V were done for calculations of traditional characteristics The Stop & Go system was designed and produced for this vehicle A starter, which will have NeFeB magnets built in stator instead of induction winding, was designed. A modernization of the starter is necessary because of different type of working - frequent starting of the internal combustion engine. A project of the Stop & Go system was carried out in the Fiat Palio car a project of the Stop & Go system for Mild Hybrid drive and verification of correctness of working has been carried out in the Fiat Palio car.
Źródło:: Maszyny Elektryczne: zeszyty problemowe; 2010, 86; 225-229
0239-3646
2084-5618
Pojawia się w:: Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Transport and Magnetic Study of Gd Ions in Pb$\text{}_{1-y}$Sn$\text{}_{y}$Te
Autorzy:: Story, T.
Arciszewska, M.
Łazarczyk, P.
Łusakowski, A.
Górska, M.
Dobrowolski, W.
Witkowska, B.
Grodzicka, E.
Gałązka, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/1968424.pdf
Data publikacji:: 1997-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.20.Ck
75.30.Et
Opis:: Electric conductivity, Hall effect and magnetic susceptibility of Pb$\text{}_{1-x-y}$ Sn$\text{}_{y}$Gd$\text{}_{x}$Te mixed crystals with 0.13 ≤ y ≤ 0.93 and 0.001 ≤ x ≤ 0.04 were experimentally studied over the temperature range 4K ≤ T ≤ 300 K. The incorporation of Gd ions into the Pb$\text{}_{1-y}$Sn$\text{}_{y}$Te matrix results in semi-metallic n-type conductivity of the crystals with y < 0.6. For crystals with y > 0.6 one observes only semi-metallic p-type conductivity. We present a model explaining these results in terms of the Sn composition dependence of the location of Gd$\text{}^{2+}\text{}^{/}\text{}^{3+}$ level with respect to the band edges of PbSnGdTe.
Źródło:: Acta Physica Polonica A; 1997, 92, 5; 997-1000
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Thermally Induced Nonlinear Refraction in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te
Autorzy:: Kowalczyk, L.
Suchocki, A.
Gałązka, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/1923774.pdf
Data publikacji:: 1992-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.65.Jx
Opis:: Self-focusing of laser beams is observed in Cd$\text{}_{0.5}$Mn$\text{}_{0.5}$Te at room temperature. The far-field patterns of laser beam after passing through the cadmium manganese telluride crystal are investigated. The values of focal length as well as the absorption coefficient were measured as a function of intensity of laser radiation. From these measurements the values of nonlinear refractive index for Cd$\text{}_{0.5}$Mn$\text{}_{0.5}$Te are determined. The results indicate that the self-focusing observed in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te is due to a thermally induced change in refractive index.
Źródło:: Acta Physica Polonica A; 1992, 82, 5; 793-796
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Temperature and Intensity Dependent Faraday Rotation in Hg$\text{}_{1-x}$Mn$\text{}_{x}$Te at CO$\text{}_{2}$ Laser Wavelengths
Autorzy:: Kowałczyk, L.
Gałązka, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/1891287.pdf
Data publikacji:: 1991-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.20.Ls
75.30.El
Opis:: Faraday rotation in Hg$\text{}_{1-x}$Mn$\text{}_{x}$Te (x = 0.11) has been investigated experimentally over the temperature range from T = 8 K to 250 K using a Q-switched CO$\text{}_{2}$ laser. Due to the exchange interaction between mobile carriers and localized Mn ions, dramatic enhancement of Verdet coefficient at low temperatures has been observed. The values of Verdet coefficient V = 5585 rad T$\text{}^{-1}$ m$\text{}^{-1}$ at 8 K and V = 1745 rad T$\text{}^{-1}$ m$\text{}^{-1}$ at 80 K have been obtained for Hg$\text{}_{0.89}$Mn$\text{}_{0.11}$Te at 10.6 μm. The dependence of Faraday rotation on intensity of laser radiation has been observed. Intensity dependent Faraday rotation shows saturation for high laser power. Intensity induced rotation is qualitatively attributed to the dispersion associated with saturable absorption of laser radiation. The results obtained in this work indicate that Hg$\text{}_{1-x}$Mn$\text{}_{x}$Te is a suitable material for Faraday rotator at CO$\text{}_{2}$ laser wavelengths for high power laser beam.
Źródło:: Acta Physica Polonica A; 1991, 80, 3; 429-431
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Temperature and Composition Dependence of Photovoltaic Spectra of Pb$\text{}_{1-x}$Mn$\text{}_{x}$Se Diodes
Autorzy:: Khoi, Le Van
Szczerbakow, A.
Karczewski, G.
Gałązka, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/1886570.pdf
Data publikacji:: 1991-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.25.Tn
Opis:: Photovoltaic spectra of Pb$\text{}_{1-x}$Mn$\text{}_{x}$Se homojunctions have been measured in the infrared spectral region within the temperature range 15-300 K. The junctions have been formed by cadmium diffusion into the p-type Pb$\text{}_{1-x}$Mn$\text{}_{x}$Se crystals with manganese content 0 ≤ x ≤ 0.08. From the positions of the photovoltaic maxima the energy band gap of the diode material has been determined. A phenomenological expression describing the energy band gap of Pb$\text{}_{1-x}$Mn$\text{}_{x}$Se as a function of temperature and crystal composition has been proposed. In diodes containing high manganese content x = 0.06 and x = 0.08 a second photovoltaic maximum caused by indirect optical transitions between the main conduction band and the secondary valence band located along the $\Sigma$-axis of the Brillouin zone has been observed.
Źródło:: Acta Physica Polonica A; 1991, 79, 2-3; 287-290
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: T1 and T2 Relaxation Times from Substantia Nigra in Parkinsons Disease and Control
Autorzy:: Kuliński, R.
Szlachta, K.
Gałązka-Friedman, J.
Friedman, A.
Powiązania:: https://bibliotekanauki.pl/articles/1360221.pdf
Data publikacji:: 2014-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 87.19.L-
Opis:: The diagnosis of Parkinson's disease, and also other neurodegenerative disorders, is based on clinical examination. Many attempts are undertaken to find a test that could confirm this clinical diagnosis. Many hopes were attributed to magnetic resonance imaging but its importance remains obscure. The aim of this study was to compare T1 and T2 relaxation times from substantia nigra of patients with clinical diagnosis of Parkinson's disease and age-matched controls. A decrease of T2 (54.5 ± 1.4 ms vs. 58.0 ± 1.5 ms) in Parkinson's disease vs. control was found with confidence level of 5%. T1 did not differ significantly between Parkinson's disease and control (624 ± 17 ms vs. 614 ± 21 ms).
Źródło:: Acta Physica Polonica A; 2014, 125, 4; 869-871
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Struktura zbiorowisk grzybów i bakterii w glebie 1-rocznej uprawy i 10-letniego młodnika w zależności od sposobu przygotowania gleby
Structure of fungal and bacterial communities in 1-year and 10-year-old plantations of Scots pine after different pre-planting preparation of soil
Autorzy:: Kwaśna, H.
Łakomy, P.
Gornowicz, R.
Mikiciński, A.
Borowczyk-Behnke, J.
Gałązka, S.
Powiązania:: https://bibliotekanauki.pl/articles/989686.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
uprawy lesne
uprawy sosnowe
mlodniki sosnowe
sosna zwyczajna
Pinus sylvestris
przygotowanie gleby
gleby lesne
aktywnosc biologiczna
grzyby glebowe
bakterie glebowe
wystepowanie
zbiorowiska bakterii
zbiorowiska grzybow
struktura zbiorowisk
armillaria
heterobasidion
scots pine
silvicultural techniques
soil biological activity
Opis:: Effects of post−harvest wood−debris utilization and pre−planting soil preparation in clear−cut forest on the community structure of soil fungi and bacteria and their possible biological activity towards Armillaria and Heterobasidion were studied in 1− and 10−year−old Scots pine plantations in Bierzwnik and Międzychód Forest Districts (W Poland). Post−harvest wood−debris utilization included: (i) removal from the surface, (ii) spread of the coarse or chipped wood−debris on the surface and (iii) mixing of the chipped wood debris with the soil. Pre−planting soil preparation included: (i) deep furrowing, (ii) shallow turning of the topsoil, (iii) ridging and (iv) no ground preparation. The soil−dilution method was used for detection of fungi and bacteria in soil. Morphotyping was used for identification of fungi. Phenotypic traits and biochemical properties were used for identification of bacteria. Molecular method, MID−66 or BIOLOG® systems were additionally applied for identification of the most common bacteria. Removal of post−harvest wood−debris from the surface of the clear−cut land and shallow turning of the topsoil or ridging before planting increased abundance of fungi in soil of 1−year−old Scots pine plantation. Deep furrowing resulted in increased abundance of fungi and no ground preparation in increased abundance of bacteria in soil of 10−year−old Scots pine plantation. Increased abundance of fungi and bacteria was associated with increased abundance of taxa considered as antagonistic to Armillaria and Heterobasidion. Removal of the post−harvest wood debris and moderate or no mechanical intervention into the soil habitat on the clear−cut site before planting of Scots pine seedlings seems to create the habitat, which may be beneficial for the growth of young trees.
Źródło:: Sylwan; 2015, 159, 01; 71-81
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Self-Induced Persistent Photoconductivity in ZnTe-Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$Se$\text{}_{y}$ Heterojunctions
Autorzy:: Van Khoi, Le
Dobrowolski, W.
Zakrzewski, A.
Dobaczewski, L.
Gałązka, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/1952039.pdf
Data publikacji:: 1996-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.25.Tn
78.20.Ls
72.80.Ga
Opis:: At temperatures lower than 200 K the photomemory effect has been observed in ZnTe-Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$Se$\text{}_{y}$ heterojunctions. The persistent photoconductivity can be achieved either by illumination from an external light source or by a self-absorption of the electroluminescence radiation when a voltage of about 10 V for a few seconds is applied to the diode. Current-voltage characteristics are of the form I~ V$\text{}^{m}$. The capacitance and electroluminescence measurements show that the photomemory effect in ZnTe-Cd$\text{}_{1-x}$Mn$\text{}_{x}$ Te$\text{}_{1-y}$Se$\text{}_{y}$ heterojunctions can be caused by the bistable nature of the In dopant in the Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$Se$\text{}_{y}$ substrate. In the high resistivity interface layer and the substrate material indium forms centers similar to DX-like centers in Zn$\text{}_{x}$Cd$\text{}_{1-x}$Te and Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te.
Źródło:: Acta Physica Polonica A; 1996, 90, 5; 883-886
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Self-Focusing and Optical Bistability in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te
Autorzy:: Kowalczyk, L.
Suchocki, A.
Gałązka, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/1929620.pdf
Data publikacji:: 1993-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.65.Jx
Opis:: Thermally induced self-focusing of laser beam and optical bistability in CdMnTe at room temperature has been investigated. Photothermal focal length as a function of intensity of laser radiation has been measured in Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te for 0.3 ≤ x ≤ 0.6. The time-dependence of the transmitted power for various laser intensities has been investigated and the switching from the transparent to dark state has been observed. For the first time the optical bistable characteristic has been measured in CdMnTe. The results indicate that CdMnTe is a suitable material for cavityless, large contrast, thermally induced absorptive bistable operation in visible region.
Źródło:: Acta Physica Polonica A; 1993, 84, 3; 519-522
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Resonant Raman Spectra of CdTe/ZnTe Self Assembled Quantum Dots
Autorzy:: Romčević, N.
Romčević, M.
Kostić, R.
Stojanović, D.
Abolmasov, B.
Karczewski, G.
Galazka, R.
Powiązania:: https://bibliotekanauki.pl/articles/1807840.pdf
Data publikacji:: 2009-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 63.22.-m
78.30.Fs
78.55.Et
Opis:: In this paper we present Raman scattering and photoluminescence spectra measured on CdTe/ZnTe self assembled quantum dots. The photoluminescence spectrum has shown two main emission peaks, both connected with existing of quantum dots. One presents direct deexcitation to ground state and the other is optical phonon (οmega = 207.3 $cm^{-1}$)-assisted deexcitation. The registered multiphonon emission process depends on temperature. At low temperature phonon spectra shows line at 450 $cm^{-1}$ (TA + 2LO in ZnTe) and 595 $cm^{-1}$ (2LO + TO(Γ) in ZnTe).
Źródło:: Acta Physica Polonica A; 2009, 116, 1; 88-90
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Resonant Photoemission Study of Mn 3d Electrons Contribution to the Pb$\text{}_{0.92}$Mn$\text{}_{0.08}$Se Valence Band
Autorzy:: Orłowski, B. A.
Kowalski, B. J.
Le Van, Khoi
Gałązka, R. R.
Ghijsen, J.
Johnson, R. L.
Powiązania:: https://bibliotekanauki.pl/articles/1872563.pdf
Data publikacji:: 1995-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.20.Fi
79.60.-i
Opis:: The resonant photoemission spectroscopy was applied to investigate the valence band electronic structure of semimagnetic semiconductor Pb$\text{}_{0.92}$Mn$\text{}_{0.08}$Se crystal and to determine the contribution of Mn 3d electrons to the valence band. The set of energy distribution curves and constant initial states spectra were taken for by energies in the region (40-60 eV) close to the Mn 3p-3d transition. The electrons Mn 3d hybridize and contribute to the valence band electrons of the crystal and main density of states contribution appears in the energy 3.5 ± 0.2 eV below the valence band edge.
Źródło:: Acta Physica Polonica A; 1995, 87, 2; 329-332
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Preparation and Optical Properties of Zn$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$O$\text{}_{y}$ Highly Mismatched Alloy
Autorzy:: Avdonin, A.
Van Khoi, Le.
Pacuski, W.
Domukhovski, V.
Gałązka, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/2047712.pdf
Data publikacji:: 2007-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.66.Dk
61.72.Vv
78.55.-m
Opis:: The Zn$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$O$\text{}_{y}$ alloy was prepared using a rapid crystallization technique. X-ray diffraction measurements were used to estimate the oxygen doping level. It is demonstrated that the oxygen solubility in Zn$\text{}_{1-x}$ Mn$\text{}_{x}$Te$\text{}_{1-y}$O$\text{}_{y}$ alloys greatly depends on the manganese concentration. No oxygen related effects were observed in the manganese free samples. The highest value of the oxygen molar fraction (y) achieved in the present study was 0.0023 in a sample having manganese fraction (x) of 0.056. The decrease in the alloy band gap was observed with increasing oxygen content. The oxygen-related trap level in Zn$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$O$\text{}_{y}$ was found to be strongly shifted with respect to that in ZnTe$\text{}_{1-y}$O$\text{}_{y}$. The shift is assigned to a creation of complex (Mn$\text{}_{x}$O) traps.
Źródło:: Acta Physica Polonica A; 2007, 112, 2; 407-414
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Preparation and Luminescent Properties of ZnTe-Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$Se$\text{}_{y}$ Heterojunction
Autorzy:: Le Van, Khoi
Dobrowolski, W.
Witkowska, B.
Mycielski, A.
Galązka, R. R.
Nguyen, Khoi
Powiązania:: https://bibliotekanauki.pl/articles/1872527.pdf
Data publikacji:: 1995-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.60.Fi
Opis:: ZnTe-Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$Se$\text{}_{y}$ heterojunctions were prepared by vapor-transport epitaxy of ZnTe on In-doped Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$Se$\text{}_{y}$ (x = 0.05, y = 0.03) single crystalline substrate in vacuum. At temperatures lower than 120 K the infrared and red electroluminescence were observed from the ZnTe-Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te$\text{}_{1-y}$Se$\text{}_{y}$ diode with forward current density in the range 0.003-4.0 A/cm$\text{}^{2}$.
Źródło:: Acta Physica Polonica A; 1995, 87, 2; 325-328
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Photovoltaic Effect on PbTe p-n Junction in the Presence of Magnetic Field
Autorzy:: Le Van, Khoi
Grodzicka, E.
Witkowska, B.
Story, T.
Gałązka, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/1929738.pdf
Data publikacji:: 1993-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.25.Tn
78.20.Ls
72.80.Ga
Opis:: Photovoltaic spectra of PbTe p-n junction have been measured in the infrared spectral region in the temperature range of 8-260 K. The p-n junctions have been formed by cadmium diffusion into the p-type PbTe crystals. From the positions of the photovoltaic maxima the energy gap of the diode material has been determined. In the presence of a magnetic field up to 7 T, a pronounced oscillatory behavior of the photovoltage was observed in the Faraday and Voigt configurations. Experiments were performed as a function of the magnetic field intensity at a constant wavelength of the incident light. The energy of the interband magnetooptical transitions between the Landau levels in PbTe was determined and compared with the theoretical model of Adler, describing the energy band structure for the IV-VI compounds.
Źródło:: Acta Physica Polonica A; 1993, 84, 4; 721-724
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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