Comparison of temperature dependences of electrical conductivity of composite rGO-SWNT film with rGO and SWNT films

2020 ◽  
Vol 46 (3) ◽  
pp. 285-292
Author(s):  
N. V. Kurnosov ◽  
A. S. Linnik ◽  
V. A. Karachevtsev
Keyword(s):  
Electrical Conductivity ◽  
Temperature Dependences ◽  
Swnt Film

scholarly journals Термоэлектрические свойства твердых растворов (CuInSe-=SUB=-2-=/SUB=-)-=SUB=-1-x-=/SUB=-(In-=SUB=-2-=/SUB=-Te-=SUB=-3-=/SUB=-)-=SUB=-x-=/SUB=-

2022 ◽  
Vol 56 (1) ◽  
pp. 38
Author(s):  
Ч.И. Абилов ◽  
М.Ш. Гасанова ◽  
Н.Т. Гусейнова ◽  
Э.К. Касумова
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Solid Solutions ◽  
Figure Of Merit ◽  
Charge Carriers ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Mobility Of Charge Carriers ◽  
Temperature Dependences ◽  
Thermoelectric Coefficient

The results of studying the temperature dependences of electrical conductivity, thermoelectric coefficient, Hall mobility of charge carriers, total and electronic thermal conductivity, as well as phonon thermal resistance of alloys of (CuInSe2)1-x(In2Te3)x solid solutions at x=0.005 and 0.0075 are presented. The values ​​of these parameters for certain temperatures were used to calculate the values ​​of the thermoelectric figure of merit of the indicated compositions. It turned out that as the temperature rises, the thermoelectric figure of merit tends to grow strongly, from which it can be concluded that these materials can be used in the manufacture of thermoelements.

scholarly journals Температурные зависимости электропроводности и магнитной восприимчивости кристаллов твердых растворов Sb-=SUB=-2-=/SUB=-Te-=SUB=-3-=/SUB=--Bi-=SUB=-2-=/SUB=-Te-=SUB=-3-=/SUB=-

2021 ◽  
Vol 55 (12) ◽  
pp. 1162
Author(s):  
Н.П. Степанов ◽  
В.Ю. Наливкин ◽  
А.К. Гильфанов ◽  
А.А. Калашников ◽  
Е.Н. Трубицына
Keyword(s):  
Electrical Conductivity ◽  
Magnetic Susceptibility ◽  
Solid Solutions ◽  
Thermoelectric Materials ◽  
Materials Science ◽  
Practical Importance ◽  
Experimental Studies ◽  
Electronic System ◽  
Temperature Dependences ◽  
The Subject

Solid solutions Bi2Te3-Sb2Te3 continue to be the subject of numerous and versatile experimental studies due to their practical importance for thermoelectric materials science. In this regard, the problem of studying the regularities of changes in the state of the electronic system of these semiconductors from composition and temperature remains urgent. This paper presents the results of studying the temperature dependences of the magnetic susceptibility of Bi2Te3-Sb2Te3 crystals containing 10, 25, 40, 50, 60 mol. % Sb2Te3. The correlation of the behavior of the temperature dependences of the magnetic susceptibility and electrical conductivity is analyzed.

scholarly journals Растворимость теллура в кристаллах TlGaTe-=SUB=-2-=/SUB=-, TlInTe-=SUB=-2-=/SUB=- и электрофизические свойства твердых растворов

2018 ◽  
Vol 60 (9) ◽  
pp. 1656
Author(s):  
А.И. Наджафов ◽  
Н.А. Алиева ◽  
К.Г. Халилова
Keyword(s):  
Phase Transition ◽  
Electrical Conductivity ◽  
Solid Solutions ◽  
Physicochemical Analysis ◽  
Lattice Parameters ◽  
Temperature Dependences ◽  
Complex Methods

AbstractThe complex methods of the physicochemical analysis are used to study TlGaTe_2–Te and TlInTe_2–Te alloys in which the tellurium solubility region up to 5.0 at % is observed. The temperature dependences of the lattice parameters and the electrical conductivity of TlGaTe_2 + x and TlInTe_2 + x have been studied in different crystallographic directions. The TlGaTe_2 + x and TlInTe_2 + x solid solutions undergo a phase transition at a temperature of 498 K. The transition nature is interpreted.

scholarly journals The Research of Temperature Dependences of Electrical Conductivity and Thermopower of WS2 and WSe2 with Partial Replacement of W on Nb

2018 ◽  
Vol 11 (4) ◽  
pp. 459-464 ◽  
Author(s):  
Yakovleva Galina E. ◽  
◽  
Romanenko Anatoly I. ◽  
Berdinsky Alexander S. ◽  
Kuznetsov Vitalii A. ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Partial Replacement ◽  
Temperature Dependences

scholarly journals Электропроводность FeGaInSe-=SUB=-4-=/SUB=- на переменном токе

2020 ◽  
Vol 54 (6) ◽  
pp. 523
Author(s):  
Н.Н. Нифтиев ◽  
Ф.М. Мамедов ◽  
М.Б. Мурадов
Keyword(s):  
Electrical Conductivity ◽  
Frequency Dependence ◽  
Activation Energies ◽  
Frequency Interval ◽  
Ac Electrical Conductivity ◽  
Temperature Dependences

The results of studying frequency and temperature dependences of AC electrical conductivity in FeGaInSe4 crystals are presented. It was found in the frequency interval f = 5 • 104−106 Hz, the regularity σ ∝ fS (0.1 ≤ s ≤ 1.0) holds for electrical conductivity. From the temperuture dependences the activation energies were determined. It is shown that in the FeGaInSe4 crystal, the frequency dependence of electrical conductivity can be explained using the multiplet model, which means that the conductivity in these crystals is characterized by a band-hop mechanism.

scholarly journals Электропроводность монокристаллов MnGaInSе-=SUB=-4-=/SUB=- на переменном токе

2020 ◽  
Vol 46 (11) ◽  
pp. 19
Author(s):  
Н.Н. Нифтиев ◽  
Ф.М. Мамедов ◽  
М.Б. Мурадов
Keyword(s):  
Electrical Conductivity ◽  
Single Crystal ◽  
Frequency Dependence ◽  
Electric Current ◽  
Single Crystals ◽  
Activation Energies ◽  
Temperature Range ◽  
Temperature Dependences ◽  
Alternating Electric Current

The results of studying the frequency and temperature dependences of the electrical conductivity of MnGaInSe4 single crystals on alternating electric current are presented. It was found that in the temperature range of 295.5–360 K at frequencies of 2•104–106 Hz, the regularity σ ∼ fS (0.1≤ s≤1.0) holds for electrical conductivity. It is shown that in the MnGaInSe4 single crystal the frequency dependence of electrical conductivity can be explained using the multiplet model, and the conductivity in these single crystals is characterized by a band-hop mechanism. Based on the dependences log σ ∼ 103/T, the activation energies are determined.

scholarly journals Structure and Electrical Properties of Superionic Ceramics Based on Silver-Enriched (Cu0.25Ag0.75)7SiS5I Solid Solution

2021 ◽  
Vol 66 (6) ◽  
pp. 489
Author(s):  
A.I. Pogodin ◽  
I.O. Shender ◽  
S.M. Bereznyuk ◽  
M.Y. Filep ◽  
O.P. Kokhan ◽  
...  
Keyword(s):  
Solid Solution ◽  
Electrical Conductivity ◽  
Microstructural Analysis ◽  
Structural Studies ◽  
Frequency Range ◽  
Impedance Measurements ◽  
Total Electrical Conductivity ◽  
Ceramic Samples ◽  
Electronic Conductivities ◽  
Temperature Dependences

(Cu0.25Ag0.75)7SiS5I-based superionic ceramics were fabricated by using the micro- and nanopowders. The XRD technique and microstructural analysis are applied for the structural studies of powders and ceramic samples. The impedance measurements of ceramic samples are carried out in the frequency range from 10Hz to 2 × 106 Hz and temperature interval from 292 K to 383 K. The contributions of ionic and electronic conductivities into the total electrical conductivity are determined, and their temperature dependences are investigated. The influence of the size effect on ionic and electronic conductivities and their activation energies in (Cu0.25Ag0.75)7SiS5I-based ceramics is studied.

scholarly journals REGULARITIES IN ELECTRICAL CONDUCTIVITY OF AQUEOUS SOLUTIONS OF SOME INORGANIC ACIDS

2018 ◽  
Vol 59 (2) ◽  
pp. 26
Author(s):  
Yuliya M. Artemkina ◽  
Yuriy D. Zagoskin ◽  
Nikita M. Kuznetsov ◽  
Vladimir V. Shcherbakov
Keyword(s):  
Electrical Conductivity ◽  
Aqueous Solutions ◽  
Electric Conductivity ◽  
High Frequency ◽  
Analytical Equation ◽  
Acid Solutions ◽  
Specific Electric Conductivity ◽  
Inorganic Acids ◽  
Wide Range ◽  
Temperature Dependences

The concentration and temperature dependences of the specific electric conductivity (EC) of aqueous solutions of HCl, HBr, HNO3, HClO4, H2SO4 and HBF4, H2SiF6, and H2TiF6 were analyzed. It was shown that at a temperature of 298 K maximum specific EC of solutions of acids does not exceed the value of the limit high-frequency EC of water. The analytical equation allowing on the basis of maximum EC and corresponding to it concentration to calculate the EC of acid solutions in a wide range of concentrations and temperatures was obtained.

scholarly journals TEMPERATURE DEPENDENCES OF ELECTRICAL CONDUCTIVITY IN CARBON BLACK FILLED POLYMER BLENDS

1992 ◽  
Vol 65 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Chifei WU ◽  
Shigeo ASAI ◽  
Masao SUMITA ◽  
Keizo MIYASAKA
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Polymer Blends ◽  
Filled Polymer ◽  
Temperature Dependences
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