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Journal articles on the topic 'DC conductivity'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 May 2022

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1

Husenkhan, Dawalappa B., T. Sankarappa, and Amarkumar Malge. "DC Conductivity of Lithium-Zinc-Boro- Phosphate Glasses." Indian Journal of Science and Technology 14, no. 46 (December 12, 2021): 3416–24. http://dx.doi.org/10.17485/ijst/v14i46.1890.

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2

El-Shekeil, Ali G., F. A. Al-Yusufy, and S. Saknidy. "DC Conductivity of some Polyazomethines." Polymer International 42, no. 1 (January 1997): 39–44. http://dx.doi.org/10.1002/(sici)1097-0126(199701)42:1<39::aid-pi641>3.0.co;2-g.

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3

Sodolski, H., and M. Kozłowski. "DC conductivity of silica xerogels." Journal of Non-Crystalline Solids 194, no. 3 (February 1996): 241–55. http://dx.doi.org/10.1016/0022-3093(95)00505-6.

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4

Kalyane, Sangshetty. "Synthesis, Characterization and DC Conductivity Study of Polyaniline / Pr2O3 Composites." Indian Journal of Applied Research 3, no. 3 (October 1, 2011): 341–42. http://dx.doi.org/10.15373/2249555x/mar2013/115.

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5

Singh, R., and J. S. Chakravarthi. "dc conductivity of molybdenum tellurite glasses." Physical Review B 51, no. 22 (June 1, 1995): 16396–99. http://dx.doi.org/10.1103/physrevb.51.16396.

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6

El Hiti, M. A. "DC conductivity for NixMg1–xFe2O4 ferrites." Phase Transitions 54, no. 2 (September 1995): 117–22. http://dx.doi.org/10.1080/01411599508213222.

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7

de Pablo, P. J., F. Moreno-Herrero, J. Colchero, J. Gómez Herrero, P. Herrero, A. M. Baró, Pablo Ordejón, José M. Soler, and Emilio Artacho. "Absence of dc-Conductivity inλ-DNA." Physical Review Letters 85, no. 23 (December 4, 2000): 4992–95. http://dx.doi.org/10.1103/physrevlett.85.4992.

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8

Choy, T. "Two-dimensional Penrose lattice: dc conductivity." Physical Review B 35, no. 3 (January 1987): 1456–58. http://dx.doi.org/10.1103/physrevb.35.1456.

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9

Donos, Aristomenis, Jerome P. Gauntlett, Tom Griffin, and Luis Melgar. "DC conductivity and higher derivative gravity." Classical and Quantum Gravity 34, no. 13 (June 15, 2017): 135015. http://dx.doi.org/10.1088/1361-6382/aa744a.

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10

El-Shekeil, Ali, and Sama Al-Aghbari. "DC electrical conductivity of some oligoazomethines." Polymer International 53, no. 6 (May 5, 2004): 777–88. http://dx.doi.org/10.1002/pi.1450.

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11

Evans, B. L., and G. Y. Nasser. "The DC conductivity of carbon films." Physica Status Solidi (a) 110, no. 1 (November 16, 1988): 165–79. http://dx.doi.org/10.1002/pssa.2211100116.

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12

Mollah, S., and G. Anjum. "DC Conductivity of Ca1-xNaxMnO3 Perovskites." Integrated Ferroelectrics 119, no. 1 (November 12, 2010): 33–44. http://dx.doi.org/10.1080/10584587.2010.503789.

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13

Calestani, G., L. Marghignani, A. Montenero, and M. Bettinelli. "DC conductivity of ZnOV2O5 glasses." Journal of Non-Crystalline Solids 86, no. 3 (October 1986): 285–92. http://dx.doi.org/10.1016/0022-3093(86)90016-5.

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14

Ghosh, A., and B. K. Chaudhuri. "DC conductivity of V2O5Bi2O3 glasses." Journal of Non-Crystalline Solids 83, no. 1-2 (June 1986): 151–61. http://dx.doi.org/10.1016/0022-3093(86)90065-7.

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15

Jian, Yuan. "Anisotropic dc conductivity of pentagonal quasicrystals." Zeitschrift f�r Physik B Condensed Matter 88, no. 2 (June 1992): 141–43. http://dx.doi.org/10.1007/bf01323565.

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16

El Hiti, M. A. "DC conductivity for ZnxMg0.8−xNi0.2Fe2O4 ferrites." Journal of Magnetism and Magnetic Materials 136, no. 1-2 (September 1994): 138–42. http://dx.doi.org/10.1016/0304-8853(94)90457-x.

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17

Dadrasnia, E., H. Lamela, M. B. Kuppam, F. Garet, and J. L. Coutaz. "Determination of the DC Electrical Conductivity of Multiwalled Carbon Nanotube Films and Graphene Layers from Noncontact Time-Domain Terahertz Measurements." Advances in Condensed Matter Physics 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/370619.

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Measuring the DC conductivity of very thin films could be rather difficult because of the electrical contact issue. This DC conductivity can, however, be extracted from noncontact measurements at GHz and THz frequencies using elaborated conductivity models that nicely fit the experimental data. Here we employ this technique to study the DC conductivity of fragile nanometer-thick films of multiwalled carbon nanotubes and monolayer graphene. The THz response of the films is measured by THz time-domain spectroscopy. We show that the THz conductivity of the samples is well fitted by either Drude-Lorentz model or Drude-Smith model, giving information on the physics of electrical conductivity in these materials. This extraction procedure is validated by the good agreement between the so-obtained DC conductivity and the one measured with a classical 4-point probe in-line contact method.
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18

Pan, Ji Yong, and Xue Qiang Cao. "Comparison of the DC and AC Conductivities of Li2O-P2O5 Glass." Key Engineering Materials 368-372 (February 2008): 1449–50. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.1449.

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Lithium phosphate glass with composition of 45Li2O-55P2O5 (in mol%) was prepared by the conventional melt quenching method and the electrical properties were examined by DC conductivity and impedance spectra. It was found that the difference between DC conductivity and DCtot conductivity deduced from impedance spectra was distinct. Difference of activation energies obtaining by DC and DCtot conductivity implied that the conduction mechanism was different. The glass of 45Li2O-55P2O5 is lithium ion conductor while the oxygen ion in the glass can migrate in some conditions.
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19

Kalyane, Sangshetty. "Synthesis, Characterization and DC Conductivity Studies of Polyaniline / Dysprosium Oxide Composites." Indian Journal of Applied Research 3, no. 6 (October 1, 2011): 1–3. http://dx.doi.org/10.15373/2249555x/june2013/180.

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20

Ahmed, Fatma B. M., Ali Badawi, and Fouad Abdel-Wahab. "The effect of non-bridging oxygen on the electrical transport of some lead borate glasses containing cobalt." Zeitschrift für Naturforschung A 76, no. 9 (June 30, 2021): 847–52. http://dx.doi.org/10.1515/zna-2021-0096.

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Abstract The effect of reducing oxygen in glass network on the electrical conductivity of system 50 B2O3 − 20 Pb3O4 − 10 Co3O4 − (20 − x)CaO − xCaCl2 (0 ≤ x ≤ 20 mol%) has thoroughly been investigated. This reduction was created by substituting oxygen ions with chloride ions. The measurements were conducted in the temperature range 320–560 K for fixed frequencies 0.1, 1, 10 and 100 kHz. It was found that at low temperatures, the dc conductivity (σ dc) is lower than the measured ac conductivity σ(ω), whereas σ(ω) and σ dc became equal at high temperature for all frequencies. The ac, dc conductivity as well as dc activation energies decrease with the gradual increase of CaCl2 content. The ac conductivity and the frequency exponent data showed that the correlated barrier hopping of electrons between both of oxidation states of cobalt ions (Co2+ and Co3+) is the most probable mechanism. The dielectric constant and the dielectric loss of the present glass system can be fitted to the Cole–Cole equation for all frequencies and temperatures.
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21

Fal, Jacek, Michał Wanic, Grzegorz Budzik, Mariusz Oleksy, and Gaweł Żyła. "Electrical Conductivity and Dielectric Properties of Ethylene Glycol-Based Nanofluids Containing Silicon Oxide–Lignin Hybrid Particles." Nanomaterials 9, no. 7 (July 12, 2019): 1008. http://dx.doi.org/10.3390/nano9071008.

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This paper presents results of experimental investigation into dielectric properties of silicon oxide lignin (SiO2-L) particles dispersed with various mass fractions in ethylene glycol (EG). Measurements were conducted at a controlled temperature, which was changed from 298.15 to 333.15 K with an accuracy of 0.5 and 0.2 K for dielectric properties and direct current (DC) electrical conductivity, respectively. Dielectric properties were measured with a broadband dielectric spectroscopy device in a frequency range from 0.1 to 1 MHz, while DC conductivity was investigated using a conductivity meter MultiLine 3410 working with LR925/01 conductivity probe. Obtained results indicate that addition of even a small amount of SiO2-L nanoparticles to ethylene glycol cause a significant increase in permittivity and alternating current (AC) conductivity as well as DC conductivity, while relaxation time decrease. Additionally, both measurement methods of electrical conductivity are in good agreement.
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22

Xu, Pei, Weijia Fu, Xiao Luo, and Yunsheng Ding. "Enhanced dc conductivity and conductivity relaxation in PVDF/ionic liquid composites." Materials Letters 206 (November 2017): 60–63. http://dx.doi.org/10.1016/j.matlet.2017.06.104.

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23

Basavaraja Patel, B. M., M. Revanasiddappa, D. R. Rangaswamy, S. Manjunatha, and Y. T. Ravikiran. "DC conductivity studies of iron decorated polypyrrole." Journal of Physics: Conference Series 2070, no. 1 (November 1, 2021): 012070. http://dx.doi.org/10.1088/1742-6596/2070/1/012070.

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Abstract Fe-Ppy was synthesized by in situ polymerization with varying the concentration of oxidizing agent (FeCl,3) and green tea extract. As prepared polymer samples have been characterized by XRD, FTIR, SEM and TEM. DC conductivity was measured in the temperature range 303-378 K. Obtained results reveals that, the conductivity slightly increases with increase in temperature. Fe (0.31M)-Ppy-10ml green tea extracted sample exhibited highest conductivity as compared to the other composites. Activation energy found to increases up to Fe-(0.92M)-Ppy 30ml sample and it was maximum for Fe (1.54M)-Ppy 50ml sample.
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24

PERES, N. M. R., and T. STAUBER. "TRANSPORT IN A CLEAN GRAPHENE SHEET AT FINITE TEMPERATURE AND FREQUENCY." International Journal of Modern Physics B 22, no. 16 (June 30, 2008): 2529–36. http://dx.doi.org/10.1142/s0217979208039794.

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We calculate the conductivity of a clean graphene sheet at finite temperatures starting from the tight-binding model. We obtain a finite value for the dc-conductivity at zero temperature. For finite temperature, the spontaneous electron-hole creation, responsible for the finite conductivity at zero temperature, is washed out and the dc-conductivity yields zero. Our results are in agreement with calculations based on the field-theoretical model for graphene.
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25

Biju, V., and M. Abdul Khadar. "DC conductivity of consolidated nanoparticles of NiO." Materials Research Bulletin 36, no. 1-2 (January 2001): 21–33. http://dx.doi.org/10.1016/s0025-5408(01)00488-3.

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26

Škipina, B., I. M. Petronijević, A. S. Luyt, B. P. Dojčinović, M. M. Duvenhage, H. C. Swart, E. Suljovrujić, and D. Dudić. "Ionic diffusion in iPP: DC electrical conductivity." Surfaces and Interfaces 21 (December 2020): 100772. http://dx.doi.org/10.1016/j.surfin.2020.100772.

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27

Ge, Xian-Hui, Sang-Jin Sin, and Shao-Feng Wu. "Universality of DC electrical conductivity from holography." Physics Letters B 767 (April 2017): 63–68. http://dx.doi.org/10.1016/j.physletb.2017.01.056.

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28

McLachlan, D. S., Kefeng Cai, and G. Sauti. "AC and dc conductivity-based microstructural characterization." International Journal of Refractory Metals and Hard Materials 19, no. 4-6 (July 2001): 437–45. http://dx.doi.org/10.1016/s0263-4368(01)00024-5.

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29

Moawad, Hassan M. M., Himanshu Jain, and Raouf El-Mallawany. "DC conductivity of silver vanadium tellurite glasses." Journal of Physics and Chemistry of Solids 70, no. 1 (January 2009): 224–33. http://dx.doi.org/10.1016/j.jpcs.2008.10.009.

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30

El-Shekeil, Ali, Maarib A. Khalid, Hussein Al-Maydama, and Ashour Al-Karbooly. "DC electrical conductivity of polydithiooxamide–metal complexes." European Polymer Journal 37, no. 3 (March 2001): 575–79. http://dx.doi.org/10.1016/s0014-3057(00)00128-2.

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31

Ruprecht, Benjamin, Johanna Rahn, Harald Schmidt, and Paul Heitjans. "Low-Temperature DC Conductivity of LiNbO3Single Crystals." Zeitschrift für Physikalische Chemie 226, no. 5-6 (June 2012): 431–37. http://dx.doi.org/10.1524/zpch.2012.0226.

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32

Abdel‐Kader, A., R. El‐Mallawany, and M. M. ElKholy. "dc electrical conductivity of tellurite phosphate glasses." Journal of Applied Physics 73, no. 1 (January 1993): 75–77. http://dx.doi.org/10.1063/1.353831.

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33

Jung, Woo-Hwan. "Synthesis and dc conductivity of Nd2/3TiO2.988." Materials Letters 59, no. 19-20 (August 2005): 2408–11. http://dx.doi.org/10.1016/j.matlet.2005.03.022.

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34

Qiu, H. H., T. Ito, and H. Sakata. "DC conductivity of Fe2O3–Bi2O3–B2O3 glasses." Materials Chemistry and Physics 58, no. 3 (April 1999): 243–48. http://dx.doi.org/10.1016/s0254-0584(98)00281-8.

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35

Liu, Youyan, and K. A. Chao. "dc conductivity in one-dimensional incommensurate systems." Physical Review B 34, no. 8 (October 15, 1986): 5247–52. http://dx.doi.org/10.1103/physrevb.34.5247.

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36

Lunkenheimer, P., G. Knebel, A. Pimenov, G. A. Emel’chenko, and A. Loidl. "Dc and Ac conductivity of La2CuO4+δ." Zeitschrift für Physik B Condensed Matter 99, no. 1 (March 1995): 507–16. http://dx.doi.org/10.1007/bf02769974.

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37

Wolfer, W. G., C. L. Bisson, P. C. Souers, and R. T. Tsugawa. "dc electrical conductivity of D-T gas." Physical Review A 41, no. 8 (April 1, 1990): 4470–77. http://dx.doi.org/10.1103/physreva.41.4470.

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38

AKHTAR, PARVEEN, M. PASHA, and FARID A. KHWAJA. "SYNTHESIS AND DC CONDUCTIVITY OF PALLADIUM POLYACRYLATE." International Journal of Modern Physics B 07, no. 08 (April 1993): 1697–710. http://dx.doi.org/10.1142/s0217979293002523.

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This papers reports the synthesis and the results of the measurements of dc conductivity of heat treated palladium polyacrylate. Infrared spectra and the scanning electron microscopy of the samples before and after heat treatments are compared in order to reveal their structural details. It is conjectured that at T>38° C molecular aggregates are formed or ion pairing takes place in the material due to the breakdown of the polymer chain in it. The semiconductor-like behavior of the electrical conductivity with the increase of temperature from room temperature to 38°C and thereafter, an exponential decrease in conductivity with further increase in temperature exhibiting a metal-like behaviour show that the material undergoes an insulator-metal transition at this temperature.
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39

Singh, R., and J. S. Chakravarthi. "dc conductivity ofV2O5-containing zinc tellurite glasses." Physical Review B 55, no. 9 (March 1, 1997): 5550–53. http://dx.doi.org/10.1103/physrevb.55.5550.

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40

Mylrajan, M., and T. K. K. Srinivasan. "DC conductivity of some substituted ammonium salts." Phase Transitions 8, no. 1 (December 1986): 82. http://dx.doi.org/10.1080/01411598608215432.

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41

McLachlan, David S., and Godfrey Sauti. "The AC and DC Conductivity of Nanocomposites." Journal of Nanomaterials 2007 (2007): 1–9. http://dx.doi.org/10.1155/2007/30389.

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The microstructures of binary (conductor-insulator) composites, containing nanoparticles, will usually have one of two basic structures. The first is the matrix structure where the nanoparticles (granules) are embedded in and always coated by the matrix material and there are no particle-particle contacts. The AC and DC conductivity of this microstructure is usually described by the Maxwell-Wagner/Hashin-Shtrikman or Bricklayer model. The second is a percolation structure, which can be thought to be made up by randomly packing the two types of granules (not necessarily the same size) together. In percolation systems, there exits a critical volume fraction below which the electrical properties are dominated by the insulating component and above which the conducting component dominates. Such percolation systems are best analyzed using the two-exponent phenomenological percolation equation (TEPPE). This paper discusses all of the above and addresses the problem of how to distinguish among the microstructures using electrical measurements.
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42

Chernikov, M. A., L. Degiorgi, A. Bernasconi, C. Beeli, and H. R. Ott. "DC and optical conductivity of icosahedral Al70Mn9Pd21." Physica B: Condensed Matter 194-196 (February 1994): 405–6. http://dx.doi.org/10.1016/0921-4526(94)90532-0.

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43

LAKSHMINARAYAN, R., and S. SURYANARAYANA. "dc conductivity and dielectric studies in AgClO3." Solid State Ionics 37, no. 1 (December 1989): 57–59. http://dx.doi.org/10.1016/0167-2738(89)90287-7.

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44

Lunkenheimer, P., G. Knebel, A. Pimenov, G. A. Emel’chenko, and A. Loidl. "Dc and Ac conductivity of La2CuO4+δ." Zeitschrift für Physik B Condensed Matter 99, no. 4 (March 1995): 507–16. http://dx.doi.org/10.1007/s002570050069.

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45

Baalrud, Scott D., and Trevor Lafleur. "dc electrical conductivity in strongly magnetized plasmas." Physics of Plasmas 28, no. 10 (October 2021): 102107. http://dx.doi.org/10.1063/5.0054113.

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46

Jahan, Nusrat, Sakiba Shahnaz, and Khandker S. Hossain. "Gel point determination of gellan biopolymer gel from DC electrical conductivity." e-Polymers 21, no. 1 (December 8, 2020): 007–14. http://dx.doi.org/10.1515/epoly-2021-0002.

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AbstractGellan is an anionic bacterial polysaccharide, which in aqueous solution dissociates into a charged gellan polymer molecule containing carboxyl ions and counter ions and forms thermoreversible gel under appropriate conditions. In this study, we investigated the effect of polymer concentration, the concentration of added monovalent metallic ion, and temperature on the DC electrical conductivity of the gellan. Results suggest that the DC conductivity decreases with the increasing polymer concentrations and the added monovalent metallic ions. Such a decrease in DC conductivity can be attributed to the reduction of the mobility of counter ions due to the increase in the crosslinking density of the gellan network. DC conductivity of gellan gels was increased with temperature, which is interpreted as the dissolution of physically cross-linked networks, thus increasing the mobility of counter ions. The behavior of temperature variation of DC electrical conductivity reveals an abrupt change at a specific temperature, which can be considered a way to determine the gel point or sol–gel transition temperature Tc of this thermoreversible biopolymer gel. This result agrees with that of rheological measurements where the viscosity showed a similar trend with temperature and diverges to infinity at the temperature close to Tc.
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47

Tsangaris, G. M., G. C. Psarras, and E. Manolakaki. "DC and AC Conductivity in Polymeric Particulate Composites of Epoxy Resin and Metal Particles." Advanced Composites Letters 8, no. 1 (January 1999): 096369359900800. http://dx.doi.org/10.1177/096369359900800104.

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The DC and AC conductivity of composites with epoxy resin and nickel particles was investigated for various content of nickel powder from ambient to 120 °C. AC conductivity was measured in the frequency range 10 Hz to 13 MHz. An enhancement of conductivity was evidenced increasing conductive filler content and temperature. AC conductivity was found to be frequency dependent beyond a critical frequency ω c. The activation energy of the temperature shift of ω c was compared to the activation energy of DC conductivity.
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48

Zhang, Yong, Baohua Wen, Liang Ma, and Xiaolin Liu. "Determination of damage zone in fatigued lead zirconate titanate ceramics by complex impedance analysis." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2012, CICMT (September 1, 2012): 000592–96. http://dx.doi.org/10.4071/cicmt-2012-tha22.

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The electric properties of the modified lead zirconnate titanate ceramics with different fatigue cycles were studied over a temperature range of 300 to 550 °C. Combination of impedance and conductivity plots was utilized to understand the contributions arising from different regions in the PZT ceramics, i.e. the grain boundary and ceramic-electrode interface region. The results showed that both the dc conductivity of the ceramic-electrode interface and the dc conductivity of the grain boundary decrease with increasing cycle number. And the dc conductivity of the ceramic-electrode interface decreases larger during the fatigue process. Based on these results, we deduce that the damage zones underneath the electrodes are the main source of fatigue in ceramics.
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49

Yang, Hongda, Qingguo Chen, Xinyu Wang, Minghe Chi, Heqian Liu, and Xin Ning. "Dielectric and Thermal Conductivity of Epoxy Resin Impregnated Nano-h-BN Modified Insulating Paper." Polymers 11, no. 8 (August 16, 2019): 1359. http://dx.doi.org/10.3390/polym11081359.

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Epoxy resin-impregnated insulation paper (RIP) composites are used as the inner insulation of dry condenser bushing in the ultra-high voltage direct current (UHVDC) power transmission system. To improve the dielectric properties and heat conductivity of RIP, hexagonal boron nitride (h-BN) nano-flakes are added to the insulation paper at concentrations of 0–50 wt % before impregnation with pure epoxy resin. X-ray diffraction (XRD), scanning electron microscopy (SEM) observations, thermal conductivity as well as the typical dielectric properties of direct current (DC) volume conductivity. DC breakdown strength and space charge characteristics were obtained. The maximum of nano-h-BN modified heat conductivity reach 0.478 W/(m·K), increased by 139% compared with unmodified RIP. The DC breakdown electric field strength of the nano-h-BN modified RIP does not reduce much. The conductivity of nano-h-BN modified is less sensitive to temperature. As well, the space charge is suppressed when the content is 50 wt %. Therefore, the nano-h-BN modified RIP is potentially useful in practical dry DC bushing application.
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50

Prasad, N. V., G. Prasad, T. Bhimasankaram, S. V. Suryanarayana, and G. S. Kumar. "Synthesis and Electrical Properties of SmBi5Fe2Ti3O18." Modern Physics Letters B 12, no. 10 (April 30, 1998): 371–81. http://dx.doi.org/10.1142/s0217984998000469.

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SmBi 5 Fe 2 Ti 3 O 18, a five layered bismuth oxide compound is synthesized using a solid-state double sintering method. DC conductivity, impedance, and AC conductivity are studied in the temperature range 30–500°C and frequency range 1 kHz–1 MHz. Complex impedance plots are used to separate grain and grain boundary contributions to electrical impedance. Activation energy for DC conductivity was found to be around 1.0 eV. The results are analyzed to understand the conductivity mechanism.
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