PCSS, V.5, N4, 2004

Abstracts

P.I. Ignatenko, О.А. Goncharov, М.А. Muza, Yu.V. Kudelin

Syntesys, Phase-Formation, Structure and Films Properties Received by Saw
(Review)

Donetsk National University, Donetsk, Ukraine

The theoretical and experimental researches of structure, phase content, kinetic of growth and properties of films of chemical compounds, received by any physical saw methods are show.

D.M. Freik, O.L. Sokolov, G.D. Mateyik¹

The Сurrent Сarriers Scattering іn the Binary-Layer Heterostructures n-PbTe/n-PbS

Department of Physics and Solid Chemistry ‘Vasiliy Stefanyk’ Precarpathian National University,
201, Galytska Str., Ivano-Frankivsk, 76000, Ukraine, E-maіl: freik@pu.іf.ua
¹Ivano-Frankivsk National Technical University of Oil and Gas,
15, Karpatska Str., Ivano-Frankivsk, 76019, Ukraine

The dependence of сurrent сarrier mobility from thickness of n-PbTe and n-PbS films, and also n-PbTe/n-PbS heterostructures, growth from the vapour phase on (111) BaF₂ are obtain. The calculation of effective mobility has been made on the supposition .

I.V. Kurilo, I.O. Rudyj, I.E. Lopatynskij, I.S. Virt¹, P. Sagan*², J. Zawislak², M. Kuzma²

Electron Diffraction Study of Twinning in Epitaxial CdTe and Hg_1-XCd_xTe Layers

State University „Lviv Polytechnic”, 12, Bandera Str., Lviv, 90646, Ukraine,
¹Section of Experimental Physics, Pedagogical University,
24, Franco Str., Drogobych, 82-100, Ukraine,
¹Institute of Biotechnology, University of Rzeszow,
16A, Rejtana Str., Rzeszow, 35-959, Poland
²Institute of Physics, University of Rzeszow,
16A, Rejtana Str., Rzeszow, 35-959, Poland,
Phone: 48 17 8625628 ext. 1144, Fax: 48 17 8625792, E-mail: psagan@univ.rzeszow.pl

Structure of thin CdTe and HgCdTe layers obtained by pulse laser deposition has been investigated by transmission electron diffraction method. Diffraction patterns are of twelve-folded axial symmetry, which proves a double positioning twinning. Observed Debye rings were compared with those predicted by theory for the {111} twinnings of [111] textured samples.
Keywords: CdTe, Hg_1-XCd_xTe, 3-d defects, electron diffraction, twinning, epitaxial layers.

Y.K. Ivashina, V.F. Kolotun, O.V. Nemtchenko, V.V. Odintsov

Compression’s Influence on the Phase Transformation in Ta-H System

Kherson State University,
27, 40 Let Oktyabray Str., Kherson, 73000, Ukraine,
phone.: 32-67-68, E-mail: baloow@ksu.ks.ua

Influence of compression on the phase transformation in Ta-H system is investigated. It is established, that the external stresses cause rising of beginning’s temperature of hydride precipitation. It is observed the thermoelastic balance in system.

B.K. Ostafiychuk, V.D. Fedoriv, V.O. Kotsuybynsky,V.V. Kaspruk, V.M. Pylypiv

Thermostimulated Crystal Structure Reduction of Epitaxial Ferrite-Garnet Films Light Ion Implanted Surface Layers

Precarpathion National University named after V. Stefanyk,
57, Shevchenko Str., Ivano-Frankivsk, 76000, Ukraine,
phone: +(03422) 59-60-75, E-mail:project1709@pu.if.ua

Thermostimulated radiation defects relaxation in boron implanted epitaxial ferrite-garnet films on the base of high-temperature X-ray diffractometry, Mëssbauer spectroscopy, simulation of physical processes are investigated. The dynamic of relaxation-reduction during annealing processes are observed. The velocity of thermal stimulated solid phase epitaxy of amorphous garnet is calculated.

N.А. Kovtun

Investigation of the Structure and Electrical Properties ZnO Doping Films, Obtained by Reactive Magnetron Sputtering Method

National University “Kharkiv Polytechnic Institute”,
21, Frunze Str., Kharkiv, 61002, Ukraine,
E-mail: root@fmeg.kpi.kharkov.ua, nazarko1@ukr.net

The investigation of the crystalline structure and electrical properties of the transparent ZnO:Al film, obtained by high-frequency magnetron sputtering method, was carried out. Optoelectrical properties of the transparent ZnO:Al films, which were obtained under different values of the temperature of substrate and working pressure in vacuum camera, were optimized. It is defined, that with increase of the pressure from 1 mbar to 20 mbar the specific electric resistance of the films is increasing due to the reduction of concentrations and mobilities of the main carriers of charge.

I.I. Patskun, L.M. Markovich

Laser spectroscopy GaP, reared from solution-fusion in Ga with the use of crucible and tubes from a synthetic corundum, and exposed to the rays by protons

M.P. Dragomanov National Pedagogical University,
9, Pyrogova Str., Kyiv, Ukraine, E-mail: rec@npu.kiev.ua

At an irradiation the occurrence two new примесных of levels of energy r and s both disappearance e and d-levels is observed. The centres s – analogues of the centres V₂, and centres r are analogues of the V₄-centres in KCl. The s-centres consist of two vacancies He, one ionised donor centre е and one hole. The centre е can be or inter-impurity atom of a lattice, or impurity atom Р_Ga. the r-centres consist of two vacancies Ga, ionized atom of oxygen d, which borrows(occupies) a place of phosphorus, and holes. The table of energy levels of the impurity centres of the samples, not irradiated and irradiated with protons GaР, is constructed, in which the critical points of the first sort and respective them both points and axes of symmetry of a Brilluen’s zone of a crystal are given.

B.K. Ostafiychuk, L.S. Yablon, V.O. Kotsuybynsky

Crystal and Magnetic Microstructure of Fluorine Implanted Surface Layers of LaGa-Substituted Ferrite-Garnet Films

Precarpathion National University named after V. Stefanyk,
57, Shevchenko Str., Ivano-Frankivsk, 76000, Ukraine,
phone: +(03422) 59-60-75, E-mail:project1709@pu.if.ua

Radiation defects formation in fluorine implanted LaGa-substituted epitaxial ferrite-garnet films are investigated on the base of conversion electron messbauer spectroscopy datas and simulation of ion implantation process. Crystal and magnetic microstructure disordered mechanism in superficial implanted layers are studied. The influence of disturbed regions defect level upon the effective fields values on the Fe⁵⁷ nuclei, effect probability and covalent bond degree Fe-O has been considered.

O.D. Smiyan

Hydrogen in the Metal as Bose Liquid

E.O. Paton Electric Welding Institute of the NAS of Ukraine
11, Bozhenko Str., Kyiv, 03150, Ukraine, tel/fax: (380 44) 227-23-66

The fact, established during direct experiment, of simultaneous existence of H⁺ and H^- quasi-ions in steels, experimental data on the behaviour of these quasi-ions in the metal, as well as analysis of the published data on the local content and mass transfer of hydrogen, led to the conclusion of the different nature of the above quasi-ions, differing from each other by their behaviour inside the metal, nature of interaction with it, by the reaction to the impact of external factors, location in the iron crystalline lattice, etc. It is shown that quasi-ion H⁺ is a Bose particle and H^- is a Fermi particle. H- has a superhigh mobility in the solid and is fixed as diffusion (diffusible) hydrogen in the metals. H+ is less mobile and is registered as residual hydrogen in the metal. The temperature of phase transition of hydrogen-Bose particle – hydrogen-Fermi particle was experimentally determined for steel 3. It is emphasized that hydrogen as Bose particle exists only within the solid and only as H^-.

V.P. Makhniy, М.F. Pavlyuk

Analyses of Isovalence Impurity Behavior on Lead Chalkogenides

‘Vasyl Stefanyk’ Preсarpathian National University,
201, Galytska Str., Ivano-Frankivsk, 76000, Ukraine

It is discuss the possibilities of the practical use of lead chalcogenides on semiconductor electronics on the basis of analysis of influencing of isovalence impurities on their physical properties.

D.M. Freik, A.M. Yatsura

Point defects on PbSe<Pb>:Bi Films, Grown at the Large Partial Pressure of Lead

‘Vasyl Stefanyk’ Prekarpthian National University,
201, Galytska Str., Ivano-Frankivsk, 76000, Ukraine, E-mail: freik@pu.if.ua

The mechanisms of doping influence of bismuth on PbSe films at the growth from vapour phase at the large lead concentration are proposed. It is shown, that the dependence of Hall concentration of current carriers from partial pressure of lead in besieging field can be explanation of amphoter bismuth properties with disproportions of their charge state on anionic sublattice.

V.I. Mandzyuk, I.F. Muronyuk, B.K. Ostafiychuk, I.I. Grigorchak

Thermodynamics Properties of Li/LiBF₄ (g-бутиролактон)/SiO₂ Electrochemical Circle

Precarpathion National University named after V. Stefanyk,
Shevchenko Str.,57, Ivano-Frankivsk, 76000, Ukraine,
тел: +(03422) 59-60-75 E-mail: mandzuk_vova@rambler.ru

The thermodynamics peculiarities of current origin in the cathode made on the basis of C-modified silica are explored by the method of chemical potential spectroscopy. It is shown, that the formation of the heterophase states takes place in some concentration intervals during intercalation process in the explored materials. Possibility of the use of nanodispersive silica as cathode material for the lithium power sources is marked.

R.D. Ivanchuk

Photoelectrical Properties of n-і-n Structures of CdTe:Fe Crystalse

‘Yu. Fedjkovych’ Chernivtsy National University,
2, Kotsyubynskogo Str., Chernivtsy, 58000

The results of experimental investigations into photoelectric properties of n-i-n structures of annealed (T = 1174 K, P_Cd = 2,24•10⁵Pa) CdTe:Fe crystals have been given The phenomenon of residual conductivity was observed up to 200 K. These samples can be used as the near-infra-red detectors, as well as the X-Ray and g-radiation dosimeters and counters.

B.K. Ostafiychuk, R.V. Ilnytskyy, I.M. Budzulyak, I.I. Grigorchak, I.F. Muronyuk, V.I. Mandzyuk, V.V. Ugorchuk

Lithium Intercalation Peculiarities of Initial and Laser Pulsed Nanodispersed ТіО₂

Precarpathion National University named after V. Stefanyk,
Shevchenko Str.,57, Ivano-Frankivsk, 76000, Ukraine
тел: +(0342) 59-60-75, E-mail:Roman_Ilnittsky@rambler.ru

The thermodynamics peculiarities of current origin in the cathode made on the basis initial and laser pulsed nanodispersed titania are explored by the method of chemical potential spectroscopy. It is set, that the formation of the heterophase states takes place in some concentration intervals during intercalation process in the explored materials. Possibility of the use of nanodispersive titania as cathode material for the lithium power sources is marked.

Z. Stasyuk, E. Koval’chuk, M. Kozak, A. Krawchenko

Mass-Spectra Analyzing of the Gas Emission Products at Heating Polyaniline in Vacuum

ЛIvan Franko Lviv National University
50, Dragomanov Str., Lviv, 79005, Ukraine

The composition of the gas emission products at heating of the polyaniline samples under high vacuum conditions have been investigated with the help of the omegatron mass-analyser. The intensive gas emission has been shown to begin at the temperatures above 100^oC, main components eliminated in the process of thermodestruction bein NH₃ and hydrocarbons.

О.О. Sapjanenko, P.P. Gorbyk, L.S. Dzyubenko, E.М. Pakhlov, О.О. Chuyko

Composition on the Basis of Polyethylene. Influence of Nature of Surface of Pirogenik Silica on Processes of Melting and Crystallization

Institute of Surface Chemistry NAS of Ukraine,
17, General Naumov Str., Kyiv, 03164, Ukraine,
E-mail: sap_miha@ua.fm

It is shown that surface modification of ultra – high – molecular – weight polyethylene particles (UHMWPE) by hydroxyl and carboxylic groups leads to changing in melting and crystallization parameters of interface layer at composite forming by sintering process. The presence of silica with hydroxyl groups in the composition cause the rising of melting beginning temperature by 3^oС and melting temperature by 2^oС, as compared to unfilled UHMWPE. At the same time, in the presence of silica with hydroxyl groups does not affected by melting beginning temperature, but it lead to rising of peak intensity respective for polymer crystallization in composite interface layer. The silica modification by grafting to its surface octyl groups cause the crystallization beginning temperature of UHMWPE and crystallization temperature in UHMWPE based composites to decrease by 4^oС and by 2–9^oС, respectively. The effect given is explained by weakening of interaction between polar groups and plastificizing influence of grafted octyl chain to crystal structure forming in interface layers of composite.

L. Mezhylovska, А. Dmytriv, D. Freik, P. Zukowski*

Point Defects of Solid Solution Cd_xHg_1-xTe

‘Vasyl Stefanyk’ Prekarpathian National University,
201, Galytska Str., Ivano-Frankivsk, 76000, Ukraine, E-mail: freik@pu.if.ua
*Lyublin Technical University, 20-618 Lyublin, Poland
E-mail: mario@elektron.pol.lublin.pl

The crystal-quasi-chemical reaction of solid solution n- and p-HgTe-CdTe formation for substitution mechanisms of mercury vacancy by cadmium and their intercalation on octahedral space of tellurium areas. The defect concentration and concentration of charge carriers from cadmium tellurides contents are calculated.

A.G. Voloshchuk, E.M. Lukiyanchuk¹

Thermodynamic Analysis of Cadmium Telluride Interaction with the Solutions of the Nа₂S-NаOH-H₂O System

Yuri Fed’kovych Chernivtsi National University,
17, Lesi Ukrainki Str., Chernivtsi
¹V. Lashkaryov Institute of Semiconductor Physics of National Academy of Sciences of Ukraine,
41, Nauki Av., Kyiv; E-mail: luc.ed@mail.ru

The influence of medium pH on the surface sulphidation of the CdTe single crystals in the solutions of the Nа₂S-NаOH-H₂O system using the construction of Pourbet diagrams has been investigated. The more possible thermodynamic reactions that could take place at such sulphidation were calculated. Some experiments on the electrochemical behavior of the CdTe single crystals in the solutions of the Nа₂S-NаOH-H₂O system were run and it was shown that chemical interaction, which could really lead to the sulphidation of this semiconductor surface, is possible in the alkaline solutions only.

S.A. Kurta, I.M. Mykytyn, M.V. Khaber

The Investigation of the Influence Fe⁺³ on Process of the Poisoning of Catalyst CuCI₂ on the g-АІ₂О₃

‘Vasyl Stefanyk’ Precarpathian National University, Chair of analytical and organic chemistry,
57, B. Hmelnytskogo Str, Kalush, Iv.-Frankivsk reg. 77300, Ukraine; 4-21-04, E-mail: kca@arte-fact.net, mib80@mail.ru

Factors in the lowering of the activity of the catalyst oxidizing chlorinating of the ethylene were exposed in the processes of the investigation. Technical descriptions of the working catalyst were studied. The change of the composition of the technological product (dichlorethane-raw) is shown during a few years of the catalyst work (CuCI₂/AI₂O₃), and it is a change of the catalyst properties. Influence of the ferum admixture is exposed on the activity and selectivity of the catalyst. We investigated the possible ways of the accumulation of the ferum admixtures in the industrial catalyst CuCI₂/AI₂O₃ during his exploitations on the technological mode of the receipt 1,2-dichlorethane in the boiling layer.

V. Kaurkovska, L. Dzubenko, О. Chuiko, О. Shahov¹

The Work of Conductivity Centers on Surface of VO₂ Thermal-Resistor in the Chemical Reactions of Ethyl Alcohol with the Benzoic Acid and Benzyl

Institute of Surface Chemistry,
17, General Naumov Str., Kyiv, 03680, Ukraine,
E-mail: user@surfchem.freenet.kiev.ua, kaurkovskaya@yandex.ru
¹Institute of Physics NAS of Ukraine, 46, Nauky Av., Kyiv, 03028, Ukraine

By method of deryvatography the processes of thermal-desorbing from surface of the thermal-resistively oxides V₂O₃ (Т_c = 150 К) and VO₂ (Т_c = 340 К) are study. It is shown, that with growth of degree metal oxidization in oxide the quantity of weaklinked water rises on surface of thermal-resistors.
By method of the conductivity measuring by the contact method the processes of water adsorption, ethyl alcohol, benzoic acid and benzyl on the VO₂ surface are study. It is shown, that the semi-oxygen layer, which does not prevent from measuring reviews of conductivity on the adsorption processes and chemical reactions on surface, exists on the VO₂ surface. It is set, that quantity of conductivity centers on the VO2 surface in case of chemical reactions of ethyl alcohol (pairs) with indicator of Lyice centers adsorbed on the VO2 surface by the benzoic acid in interval of temperatures 334-350 К makes (1±0,1)·10¹⁵cm^-2. The values of work of conductivity centers in the chemical reactions on surface rise in case of temperature decline.

ІI.M. Rarenko, G.I. Vorobets, O.I. Vorobets, S.L. Voropaeva, E.D. Gromko, E.M. Kosenkov

The Controller for Management of Temperature Conditions of Semiconductor Films Preparation on the Basis ІВМ РС

Yu. Fed’kovych Chernivtsy National University, Physical faculty,
2, Kotsjubynskyi Str., Chernivtsi 58012, Ukraine, E-mail: rt-dpt@chnu.cv.ua

L.Ya. Midak1, H.A. Sirenko1, V.P. Sviderskyy

The Creep of Composite Materials Based on Polytetrafluoroethylene in One-Axle Restrain

¹’Vasyl Stefanyk’ Precarpathian National University,
57, Shevchenko Str., Ivano-Frankivsk, 76000, Ukraine,
²Khmelnytsky State University,
11, Instytutska Str., Khmelnytsky, 29000, Ukraine

The creep of composite materials based on polytetrafluoroethylene, which are filled of dispersed and fibred reinforcements, in one-axle restrain is researched. The equations, which describe the creep in time and let to forecast the creep in time of different materials from polytetrafluoroethylene with high precision, are obtained.

Ya.Ya. Kotsak, T.M. Melnichenko, Ya.P. Kutsenko, P.P. Puha*

Internal Pressure, Microhardness аnd Fluidity Limit in the Chalcogenide Glasses

State enterprise “Inter-departmental laboratory of ecological problems and radiation security of Carpathian region”,
*Institute of Elektron Physics National Academy of sciences of Ukraine,
21, Universitetska Str., Uzhgorod, 88000, Ukraine, E-maіl: mvlep@mvlep.uz.ua

R.P. Lisovskyy, I.M. Budzulyak, I.I. Grigorchak, R.I. Merena, I.F. Myronyuk, B.K. Ostafiychuk

Supercapacitors’ Properties on the Basis of the Activated Carbon Injected by Chrome

Precarpathion National University named after V. Stefanyk,
57 Shevchenko Str., Ivano-Frankivsk, 76025, Ukraine

Research of influencing of injectia of chrome is conducted in the matrix of the activated carbon (AV) on descriptions of the supercondensers formed on his basis. It is set, that such injectia results in the increase of specific capacity of the given supercondensers on 5-10 % but minimizations of faradeivscih processes in the wide range of change of potential (– 1 V – + 0.6 V).

R.I. Merena, I.M. Budzulyak, I.I. Grigorchak, R.P. Lisovskyy, I.F. Myronyuk, B.K. Ostafiychuk

Research of Descriptions of the Electrochemical Capacitors, Formed on the Basis of the Activated Carbon Modified by High Temperature Treatment

Precarpathion National University named after V. Stefanyk,
57, Shevchenko Str., Ivano-Frankivsk, 76025, Ukraine

Researches of specific characteristics dependence of electrochemical capacitors (EC), the electrodes of which are made on the basis of the activated carbon materials (AСM), are realized, from the regimes of high temperature treatment (НTТ) of such AСM in the air flow. It is set, that such method of treatment is universal and regardless of sort AСM results in growth of specific capacity EC on 35 - 75 %, without the considerable changes of their internal resistance.

V.Ya. Opylat¹, S.O. Kanevskij², O.V. Harchenko³, І.V. Opylat³

Compensating Non-Bridge Circuit Application in Automatic System for Сapacity Relaxing Component Measurement

¹The Dragomanov Ukrainian National Pedagogical University,
9, Pirogova Str., 01030, Kyiv, Ukraine
²The Scientific Center Institute for Nuclear Research, NASU,
47, pr. Nauki, 03650, Kyiv, Ukraine
³National Taras Shevchenko University,
60, Volodymyrska Str., 01033, Kyiv, Ukraine

Review of existent bridge circuits for capacitance, inductance and phase measurements was made. New scheme of fast-operating automatic capacitometer with servo feedback and relaxing component separation was suggested. Flow chart and operation algorithm were descripted.

I.V. Maslov

Optical Checking Quality System of the Welded Connections

National Technical University of Oil and Gas,
15, Karpatska Str., Ivano-Frankivsk, 76019, Ukraine, tel: 4-80-00,
тел. 4-80-00, E-mail: dim@il.if.ua

Tomasz Boczar

Results of Time-Frequency Analysis of Acoustic Emission Pulses Generated by Surface Partial Discharges in Air

Technical University of Opole, Poland

The subject matter of this paper covers the issues connected with the application of modern numerical methods in processing and analysis of the signals measured by the acoustic emission (AE) method during high-power experiments carried out in laboratory conditions in set-up modeling surface partial discharges (PDs) in air.
First of all, the paper presents the results of the time-frequency analysis of the AE pulses generated by PDs carried out using continuous (CWT) and discrete (DWT) wavelet transforms as well as a STFT transformation. Moreover, it presents the runs of the power density spectra and columnar diagrams showing the size of the energy transferred at the particular decomposition levels.
Keywords: time-frequency analysis, discharges, acoustic emission.

A.P. Olijnyk

The Curvilinear Cylindrical Bodies Axes Interpolation Method Design Using the Information About Body’s Displacement and Loading Mode

Ivano-Frankivsk National Technical University of Oil and Gas,
15, Karpatska Str., 76000, Ivano-Frankivsk,
тел.4-80-00, E-mail:duol@il.if.ua