<
Journal Physics and Chemistry of Solid State (Volume 3, Number 2, English version
2002 Volume 3 N 2
Abstracts
Theoretical and Technological Aspects of Synthesis of Laser Mirrors
(Review)
LTD „Lviv-Electronica”,
14a, Ugorsk Str.,. Lviv, 79619, tel.(fax) 0322-70-14-82,
E-mail:
bond@org.lviv.net
1Ivan Franko Lviv National University,
1, Universytetska Str., 79602,
tel. 0322-964-433
In the publication the analysis of a modern status of development of optics of gas lasers is given.
The features of designs of industrial lasers and elements, used in them, of optical resonators are
analyzed. Is shown, that use of selective mirrors essentially improves the basic parameters of lasers.
The methods of synthesis of thin-film optical coverings are analyzed. The concrete examples of
designing of selective mirrors of lasers are resulted.
Full text (on original language)
.pdf (629kb)
Electron-Phonon Scattering on n-Types of Lead
Chalkogenides Crystals
Physics-Chemical Institute at the Vasyl Stefanyk Precarpathian University,
57, Shevchenko St., 76000, Ivano-Frankivsk
, E-mail:
liubomyr@pu.if.ua
1Ivano-Frankivsk National Technical University of Oil and Gas,
15, Karpatska St., Ivano-Frankivsk, 76000
The theoretical analysis of scattering carriers of current on thermal oscillations of crystalline
lattice is conducted. The account of mobility of carriers in wide temperature (4,2-300 Ê) and
concentration (1016-1020 sm-3)
ranges from the account of interaction of electrons conductivity with deformation’s
potentials both of acoustic and optical phonons and with a polarizing potential of optical
phonons is executed. Is shown, that the precise coordination of theoretical and experimental
results has a place for want of complex account of current scattering both on phonons, and on
ionized vacancies. For crystals of lead chalkogenides such as conductivity in the field of low
concentration the scattering on optical polar phonons (for want of 77 and 300 Ê) predominates,
in the field of high concentration – on deformation potential of optical phonons (at the temperature
of 300 Ê).
Full text (on original language)
.pdf (371kb)
Atomic Mechanism of Interaction of an Environment
Material with Deformed Metal
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 mechanism and conditions of atom-by-atom splitting of molecules of a deformation environment
material into individual components migrating deep into metal are suggested. The process occurs
at the "environment-deformed solid" interface due to a new physical phenomenon (atom-by-atom
splitting of environment material molecules by dislocation – ASED) discovered. The latter is
confirmed by direct experimental measurements made by local mass spectrometry using a laser
probe and by Auger spectrometry on a number of steels, metals and alloys deformed in environments
of a different aggregate state and with a different chemical composition.
Full text (on original language)
.pdf (477kb)
²nvestigation of Phonon Spectra of the CdI2
Single Crystals Non-doped and Doped by CuI Using Inelastic Scattering of Thermal Neutrons
The dispersion of longitudinal acoustic phonon modes in the CdI2 single crystals non-doped
and doped by CuI was investigated by the method of inelastic scattering of thermal neutrons.
Using dispersion relations, Acoustic speed for highsimmetrical directions in a Brillouin zone
(BZ) was calculated. The charge state of the copper impurity centers substantially determines
dispersion dependence of longitudinal acoustic phonon modes along of some highsimmetrical
directions in BZ in single crystals CdI2: in the charge state Cu+
the impurity centers consolidate,
while in the state Cu2+ - loosen bonds in a layer.
Full text (on original language)
.pdf (417kb)
Knight shift and band structure of PbTe and SnTe
1Chernivts³ National University, Radiotechn. Dept,
58012, Chernivtsi, 2,
Kotsyubynskiy Str. tel. (03722) 4-24-36, E-mail:
rmd@chnu.cv.u,
2Chernivtsi Department of Institute of Material Sceince Problems NAS Ukraine,
58001,
Chernivtsi, 5, 1. Vilde Str., tel. (03722) 2-51-55, E-mail: chimsp@unicom.cv.ua,
Å-mail:
chimsp@unicom.cv.ua
The results of Knight shift investigations on 207Pb nuclei in both n- and ð-type PbTe and on
119Sn in p-SnTe in the wide region of charge carrier concentrations
(6•1016-3,6•1021 sm-3) are presented.
In samples of p-PbTe the Knight shift is diamagnetic in the interval
6•1016 < ð < 6•1019 sm-3.
At ð ~ 2•1019 sm-3 DÍ
reaches maximal value, and at ð ~ 6•1019 sm-3 an inversion of the
DÍ sign takes place. In n-PbTe the Knight shift is
paramagnetic in all interval
of concentrations. And at n ~ 2•1019 sm-3 the leap of DÍ
is observed (~60 G). In SnTe the shift font face="Symbol">DÍ is only paramagnetic.
It is established, that the breaks on nonmonotonic dependence font face="Symbol">DÍ(ð)
correspond to critical points in the band spectrum of SnTe. The applicability
of existing models of hole spectrum for an explanation of Knight shift in PbTe is considered.
Full text (on original language)
.pdf (331kb)
The Process Dehydratation Modelling of Nickel Oxalate
1National University «Lvivska Polytechnika»,
8, Bandery Str., Lviv, 79000, tel. 39-87-66,
E-mail:
bordun@wups.lviv.ua
Lviv dept. «Current Sources» of Institute of Material Science Problems, 1, Paton Str., Lviv
The process of nickel oxalate dihydrate NiC2O4•2H2O
dehydratation modeled by diffusion mechanism. Activation energy of dehydratation reaction
Du = 18,05 kcal/mol was calculated. The good agreement of Du
magnitudes which was obtained in different atmospheras and by different methods was showed.
Full text (on original language)
.pdf (266kb)
Coordinate Distribution of Photosensitivity in Inhomogeneous on
Their Doping Level of a n-Type Solid Solutions
CdxHg1-xTe
Institute of Semiconductor Physics,
45, Nauky Av., 03028 Kyiv,
òåë 265 65 02,
E-mail:
zvlas@isp.kiev.ua
In CdxHg1-xTe (CMT) crystals (õ ~ 0)
of n-type conduntivity with fluctuations of the doping level the inhomogeneity of
coordinate distribution of photosensitivity is revealed.
It is shown that at domination of the process of band-to-band impact recombination,
the presence of recombination barriers caused by fluctuations of carriers concentration
changes absolute values of lifetimes in a matrix and inclusions. Nevertheless, photoactivity
of such inclusions are kept: overdoped inclusions remain recombinatively active and carry out
a role of sinks for nonequilibrium charge carriers, while overcompensated inclusions - are
injectively active and carry out a role of sources for nonequilibrium charge carriers at
optical excitation of inhomogeneous crystals.
When transiting into the temperature range of intrinsic conductivity, the coordinate
relief in distribution of a photoconductivity is levelled at the expense of charge carriers
concentration alignment along the sample.
Full text (on original language)
.pdf (348kb)
Correlation Effects of Crystallisations
Parameters and Morphology of Crystals in Selenium Films
Donbas State Academy of construction and architecture,
2, Derzhavna Str., Makiivka-23, Donetsk region, 86023, Ukraine, 86123, (0622) 97-03-41,
1Donetsk National University,
24, University Str., Donetsk, 83055, Ukraine, (0622) 999-767
By both crystallography and lighting of diffraction electronic microscopy methods are investigated
crystallization kinetics and morphology of germs in selenium films. The established correlation of
dependence of velocity of crystalline formation from temperature and dependence it of morphological
parameters from temperature, which confirm close connection of process origin and structures of
actual germs.
Full text (on original language)
.pdf (279kb)
The Investigation of Volt-Watt Sensitivity of Anisotropic
Optic Thermoelement at Temperature-Controlled Side Facet
Yriy Fedkovych Chernivtsy State University,
2, Kotsubynskyy St., Chernivtsy, 58012, Ukraine, tel. (037-22) 4-43-19,
E-mail:
ss-dpt@chnu.cv.ua
The calculation of two dimensional temperature distribution for anisotropic optic thermoelement
(AOT) taking into account the temperature-controlled side facet was carried out. The expression
of cross thermo-electromotive force was obtained and volt-watt sensitivity of AOT for cases of
optical carrying and surface absorption.
Full text (on original language)
.pdf (304kb)
The Profile of the Carrier Distribution in Polycrystalline
PbS Films under the Annealing with Oxygen Absorption
Vasyl Stefanyk Precarpathian University,
57, Shevchenko Str., Ivano-Frankivsk, 76000
E-mail:
ruvinsky@pu.if.ua
The space-time distribution of the carrier concentration in the polycrystalline textured PbS films
of the
n-type under the annealing with oxygen absorption was determined. A possibility of the formation
of two-layer
p-n structure because of oxygen diffusion was established. The results of calculation are in
agreement with the experimental data.
Full text (on original language)
.pdf (247kb)
Influence of Laser Processing to Optical Properties
of Tiogalat Zinc Thin Films
The indicated results of research of optical properties of recordings tiogalat zinc
ZnGa2S4, obtained impulse laser raising, and influence on them of laser exposure.
Is obtained, that the thin films ZnGa2S4 are proof to operation of
laser radiation with denseness of power 104-106 J/ñm2.
In an result of operation by laser radiation of such potency an optical passage, form
and the position of edge of absorption of researched recordings is not changed.
Significance of refraction parameter will increase to n = 2,38, that testifies
to reduction in the order of crystalline structure of researched recordings owing
to operation by laser radiation.
Full text (on original language)
.pdf (255kb)
Correlation Between the Electronic Structure and
Thermostability of the Fe-Based Soft Magnetic Glasses
Department of Physics, Taras Shevchenko National University,
64, Volodymyrska Str., 01033, Kyiv, Ukraine
Tel.: 380 –44-266-23-35
E-mail:
zakharenko@mail.univ.kiev.ua
The temperature dependencies of magnetic susceptibility k(T) for amorphous
Fe85B15-based alloys with Co and Cr dopants have been investigated in the range of
300-850 K using the Faraday technique. The crystallisation of the studied amorphous alloys
is accompanied by an essential increasing of k. Co and Cr dopants were shown
to increase the temperature range of amorphous state stability in Fe85B15-based
soft magnetic glasses. The computer simulation of the electronic states density n(E)
of Fe85B15 amorphous alloy displayed that the Fermi level is located in the vicinity
of local maximum of n(E) curve. Co and Cr dopants were shown to decrease n(E) at the
Fermi level. The comparison of the experimental k(T) curves and the data
of electronic structure simulation proved the applicability of the Nagel-Tauc
electronic criterion to describe the thermal stability of the investigated alloys.
Full text (on original language)
.pdf (264kb)
Investigation of Doped and Energy Structure of
ZnGeP2 of the Tetragonal Modification
M.P. Dragomanov National Pedagogical University,
9, Pyrygova Str., Kyiv, 01030, tel. 221-99-36
Are investigated impurity and band power structures of crystals ZnGe2 of tetragonal
modification. Is obtained, that the position of a long wavelength edge 0,88 åÂ
answers a distance from valence band, and long wavelength near 0,96 å – distance
of a b-level from bottom of conductivity band. The positions of singularities Van-Khove
and their type in valence band and in conductivity band are determined.
Full text (on original language)
.pdf (264kb)
Quasychemical Description of Tin Telluride Own Atom Defects
Physics-chemical institute at the Vasyl Stefanyk Precarpathian University,
57, Shevchenko Str., Ivano-Frankivsk, 76000
The offered model of quasychemistry reactions of own atom defects formation in tin telluride
crystals with simultaneous existence two-charging defects behind Schottky. On the basis of the
analysis of a requirement of an electroneutrality the dependence of defects concentration both
carriers of current from temperature and fractional pair pressure of a tellurium is found at
embodying of two-temperature annealing. It is specify value equilibrium constants of corresponding
reaction.
Full text (on original language)
.pdf (267kb)
Thermodynamyc and Kinetic Parameters
of Interlayer Lithium Ions Sorption Process of ³2Se3 Crystals
Chernivtsi Branch of the IPM NAS of the Ukraine,
5, I. Vilde str., 58001, Chernivtsi, Ukraine
Analyse phases of Lix³2Se3 and evaluated thermodynamic parameters
of interlayer lithium ions
sorption process of ³2Se3 crystals by e.m.f. method, with x the range
0 <x < 5. 20 cycles charge/discarge with near 100 % efficiency
are obtained in the range 1,25 < x < 3. Evaluated kinetiñ
parameters of process has been studied as function of lithium concentration
by impedance spectroscopy.
Full text (on original language)
.pdf (250kb)
Magnetic Properties of Co-P Films Obtained by Pulsed Current
Dnipropetrovsk State University
13, Naukova St., Dnipropetrovsk, 49050
(056) 776-90-42
, E-mail:
physmet@ff.dsu.dp.ua
The influence of the program-controlled pulsed current on the structure and magnetic properties
of electrodeposited films are studied. Their structure of magnetic properties have been shown
to be dependent of phosphors concentration and nonequilibrium of crystallization process
caused by pulsed deposition mode. The coercivity and magnetization of saturation of films
obtained at great values of magnitude and rate of varying of cathode supersaturation have
been found to be higher than 10%.
Full text (on original language)
.pdf (305kb)
Internal Pressure, Microhardness and Fluidity Limit
in the Chalcogenide Glasses
Through the data of elastic constants maximal internal pressure pim is calculated for chalcogenide
glasses and fluidity limit sï. It was shown, that value of pim not
corelates with microhardness H after Vikkers in all of glasses. Fluidity (plastic)
limit sï more little then microhardness and maximal internal pressure pim.
Elastic constants and fluctuation free volume parameters in observed glasses largely
depend on mean coordination number Zñð.
Full text (on original language)
.pdf (324kb)
Migration Proces Parameters of Point Defects in n-PbTe
Epitaxial Films
Vasyl Stefanyk Prekarpathian University
Shevchenko str., 57, Ivano-Frankivsk, 76000, Ukraine
tel.: (380-3422) 59-60-88, fax: (380-3422)3-15-74,
E-mail:
igorlim@il.if.ua
Ó íàáëèæåíí³ òåî𳿠øâèäêîñòåé êâàç³õ³ì³÷íèõ ðåàêö³é íà îñíîâ³ åêñïåðèìåíòàëüíèõ ðåçóëüòàò³â âïëèâó
³çîòåðì³÷íîãî â³äïàëó íà ïîâ³òð³ íà ñòðóêòóðí³ ïàðàìåòðè ïîë³êðèñòàë³÷íèõ ïë³âîê n-PbTe âñòàíîâëåíî
ïðèðîäó ³ âèçíà÷åíî õàðàêòåðíèé ÷àñ òà åíåðã³þ àêòèâàö³¿ ïðîöåñó ì³ãðàö³¿ âëàñíèõ íåð³âíîâàæíèõ
òî÷êîâèõ äåôåêò³â. Ïîêàçàíî, ùî ïåðåâàæàþ÷èìè àòîìíèìè äåôåêòàìè â ñâ³æîâèðîùåíèõ ïë³âêàõ n-òèïó
º îäíî÷àñíî äâà òèïè äîíîðíèõ äåôåêò³â: ì³æâóçëîâ³ àòîìè ñâèíöþ Pbi òà âàêàíñ³¿ òåëóðó
VTe, à
ï³ñëÿ â³äïàëó íà ïîâ³òð³ âæå ó ïë³âêàõ p-òèïó ïåðåâàæàþòü àêöåïòîðí³ âàêàíñ³¿ ñâèíöþ VPb.
Full text (on original language)
.pdf (267kb)
Receipt Films of Vanadium Oxides by Method of Reactive Deposition
In article are represented the job of receipt vanadium oxides by method of reactive magnetron
ionic- plasma deposition. We are got the substrate temperature significance, oxygen pressure,
current of gas digit for being accorded VO2, V2O5,
and being possibility accorded V6O11.
Full text (on original language)
.pdf (200kb)
The Defects of Crystalline Structure and Doping Mechanisms
of Lead Tellurides both by Cobalt and Nickel
Vasyl Stefanyk Precarpathian University,
57, Shevchenko Str., Ivano-Frankivsk, 76000
The methods by crystal quasichemistry describe the probable mechanisms of doping PbTe crystals
n- and p-type by transitional elements Co and Ni. Is shown, that donor an operation to dope of
impurities associate as with substitution of vacancies in octahedron, and rooting in tetrahedron
of hollow dense packing of atoms tellurium of main matrix.
Full text (on original language)
.pdf (285kb)
Influence of Chemical and Thermal Processing of the Iron Powder of
Plasma Deposition Layer on Strength of Carbon Steel
Ivano-Frankivsk National Technical University of Oil and Gas,
15, Karpatska St., Ivano-Frankivsk, 76000
1Vasyl Stefanyk Precarpathian University, 57, Shevchenko St., 76000, Ivano-Frankivsk
Because of experimental data is shown, that the chemical-thermal processing plasma
deposition of a powder of iron essentially influences tiresome strength of carbon steel St. 3.
Full text (on original language)
.pdf (464kb)
Features of an Electronic Structure Metastability of Ultra
Dispersible Systems and Materials, Obtained from Them
Institute of Material Science Problems NAS of Ukraine
It has shown general regularity in change of energetic structure of valence electron at
disintegration of crystalline to nanofractions and dependence of this changes from type
of chemical bound and crystal structure, dependence from method of nano powders consolidation
and condencation of carbon films.
Full text (on original language)
.pdf (251kb)
Nuclear defects and electrical properties of
epitaxial films PbTe<Te>:In
Vasyl Stefanyk Prekarpathian University,
57, Shevchenko Str., Ivano-Frankivsk, 76000, Ukraine, E-mail: prk@pu.if.ua
1Ivano-Frankivsk National University of the oil and gas,
15, Karpatska Str., Ivano-Frankivsk, 76000, Ukraine
By methods both of crystal-quasichemistry and quasichemistry is analysed the mechanisms of process
doping of PbTe films by indium, enriched tellurium. Is established, that the one-charge atoms
indium InPb+ The atoms replace of lead in octahedron hollows of tellurium dense
packing of PbTe crystalline structure, act by the donors. Is determined constants
of an equilibrium and enthalpy of quasichemistry reactions of vacancies of lead [VPb2-]
formation and substitution by indium the atom of lead [InPb+].
Full text (on original language)
.pdf (423kb)
Thermoelectrial Properties of the Compounds,
Bases on Lead, Germanium Bismuth and Stibium
Physics-Chemical Institute at the Vasyl Stefanyk Prekarpathian University
Shevchenko str., 57, Ivano-Frankivsk, 76025, Ukraine
Is investigated the dependence of specific electrical conductivity (s),
efficient of thermoelectromotive (a), specific thermal electric power
(font face="Symbol">a2s), and efficients of thermal conductivity
(k) and thermal electric quality
(Z = a2s/k) of the compounds
(BixSb1-x)2Te3-GeyPb1-yTe from composition
0,0 < x < 1,0, 0,2 < y < 0,9.
Is received the compounds with optimum data of
a2s and Z.
Full text (on original language)
.pdf (296kb)
The Growth of Iron-Yttrium Garnet Epitaxial Films
with Inappreciable Magnetic Losses
ÍNational University “Lvivs’ka Polytechnica”,
12, Bandery Str., Lviv
1Institute of Metalophisics named after G.V. Kurdyumova NAS of Ukraine
The influence of composition and mass of fusion mixture for a solute-melt preparation on conditions
of growth and quality of iron-yttrium garnet epifilms is investigated. Is shown, that for deriving
of a series of nondefected films with a narrow line of a ferromagnetic resonance and stable parameters
by a method of a liquid phase epitaxy it is necessary to use a solute - melt of a major mass and to
apply their padding stirring during the growth.
Full text (on original language)
.pdf (285kb)
Calculations of the Optical Constants of the
Layer Semiconductor Crystal PbI2
Chernivtsi National University,
2 Kotsyubinskyy Str., 58012, Chernivtsi, Ukraine
On the base of ‘ab initio’ pseudopotential method the energy spectra calculations there were
obtained the real and imaginary parts of dielectric function of the layer semiconductor PbI2.
This allows to calculate optical constants of the crystal, in particular, here absorption and
reflectivity.
Full text (on original language)
.pdf (337kb)
The Carbon in Crystalline Lattice of Monosilicon
Vasyl Stefanyk Precarpathian University,
57, Shevchenko St., Ivano-Frankivsk, 76000
Research of influence of impurity cleusity carbon alloy in silicon on electrophysics parameters
of IC structures are perfomed. It is showed that isovalence carbon alloy has significant positive
role as in oxidation-diffusion processes so in formation of inner carbon getter and ionic multicharge
implantation.
Full text (on original language)
.pdf (253kb)
Perspectives of Technological Use Spinodal
Phase Disintegration Sapphirine and Cordierite Solid Solutions
Is updated reference temperatures of processes phase formation in M-A-S system and updated point
of view on a sequence and specifity of their course. The most perspective variants of technological
measures are chosen, which realization ensures in materials, which are synthesized, shaping of the
raised or non-tradicional combinations of properties.
Full text (on original language)
.pdf (240kb)
The Choice of Optimal Approximation for
Quantum Chemical Calculation of Macromolecules Electron Structure
Vasyl Stefanyk Precarpathian University,
57, Shevchenko Str., 76000, Ivano-Frankivsk
Is investigated, that for quantum mechanical calculations polypropylene macromolecules the
optimization of geometry should be carried by a method ÐÌ3 applying algorithm Pollak-Ribber.
For calculation of effective charges on atoms it is expedient to use methods ÀÌ1 whether ÐÌ3,
which give almost identical distribution of charges. In particular, the method ÀÌ1 takes into
account hydrogen connections, gives rather exact data of energy activation for many responses
and calculates heats of molecules formation.
Full text (on original language)
.pdf (297kb)
Magnitudes Effective of Charges of a Circuit Symmetrical
and Asymmetrical Polymetyns
Precarpation university of a name V. Stefanyk
76000, Ivano-Frankivsk, Shevchenko str., 57
There was compared quantal-chemical parameters of symmetric and asymmetrical 3-metylchynolinium
of dyes received at interaction of quarter salts 3-metyllepidinium with 3-metylphormalinium.
New synthesized connections have appeared interesting object for definition them ålectronical
of a structure. With the help of a method Huckel and program NMO determined effective of charges
polymetyn of a circuit and atoms of nitrogen.
Full text (on original language)
.pdf (208kb)
Influence of Thermal Processing in Hydrogen on Physics-Mechanical Properties of Alloys System Iron - Nickel
(up to 36 % Ni)
V. Gnatyuk Ternopilj State Pedagogical University
The objective laws of hydrogen’s influence on physical (electric resistance, thermo-EDF, density,
magnetic induction modulus Ung’s) and durability (durability limits and leak limits, plasticity
of alloys) systems FeNi with contents of Ni 10, 15, 18, 20, 25, 36 mas.% were determined.
It was shown that dissolved hydrogen stimulates the process of moulding regulated structures
Fe3Ni and FeNi.
It was ascertained that thermal cycling in hydrogen extends the limit of short-term durability
of the alloy H18, in change of which two stages are observed. At the first stage (up to 20
thermal cycling) sâ increases to 6 times, at the second stage
(up to 100 thermal cycling) it decreases lower than the starting point with simultaneous
30 % increase of plasticity.
It was shown that hydrogenous thermal processing intensifies the process of invar strengthening
of H36 alloy.
Full text (on original language)
.pdf (289kb)
Matching of Algorithms for Interior Strings Sorting
Vasyl Stefanyk Precarpathian University 57,
Shevchenka Str., Ivano-Frankivsk, 76000
(3422) 59-61-09, E-mail:
kre@pu.if.ua
The realization of the quick algorithm of the internal sorting of character strings with minimal
memory is proposed. The sensitivity and quickness of compared algorithms experimentaly are determined
for character strings with different order of elements and string size to 100 Mb.
Full text (on original language)
.pdf (273kb)
Phenomena of Semiconductor Intercalation Electrician
Institute of Material Problems NAS Ukraine, Lviv Department,
1, Paton St., Lviv, 79000, Ukraine
The phenomena of semiconductor intercalation electrician of crystals Bi2Se3,
InSe and GaSe is investigated at different modes of introduction a “guest” component.
Is shown, that magnitude and direction of currents of thermal stimulation discharge,
from the sorts of intercalant and it concentration depend on temperature, aspect of a
crystalline matrix. Detected photo electrician the condition has permitted to generate
nanostructure for generation of a photocurrent from a photo-electromotive power = 1,41 V
and use of an accumulated solar energy in lacks of illumination.
Full text (on original language)
.pdf (267kb)