The percolation mechanism of conductivity in nanocomposite a-C:H<Ag+Ti> films
The presented work is about percolation mechanism of electrical conductivity of composite a-C:H<Ag+Ti> films. The a-C:H<Ag+Ti> thin films were deposited onto quartz substrates by ion-plasma magnetron sputtering method. High purity argon (Ar) and methane (CH4) gases mixture and combined...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Al-Farabi Kazakh National University
2018-05-01
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| Series: | Physical Sciences and Technology |
| Online Access: | http://phst/index.php/journal/article/view/109 |
| _version_ | 1797645285305876480 |
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| author | Ye.S. Mukhametkarimov S.L. Mikhailova K. Dautkhan A. Bashen Zh.N. Zhumatayev O.V. Rofman S.Ya. Maksimova O.Yu. Prikhodko |
| author_facet | Ye.S. Mukhametkarimov S.L. Mikhailova K. Dautkhan A. Bashen Zh.N. Zhumatayev O.V. Rofman S.Ya. Maksimova O.Yu. Prikhodko |
| author_sort | Ye.S. Mukhametkarimov |
| collection | DOAJ |
| description |
The presented work is about percolation mechanism of electrical conductivity of composite a-C:H<Ag+Ti>
films. The a-C:H<Ag+Ti> thin films were deposited onto quartz substrates by ion-plasma magnetron sputtering
method. High purity argon (Ar) and methane (CH4) gases mixture and combined target of polycrystalline
graphite with the purity of 99.99%, silver (99.99%) and titanium (99.99%) were used to produce а-
С:Н<Ag+Ti> films. Resistance of the produced films has been measured using «two probe» method to obtain
concentration dependence of electrical conductivity. Conductivity of a-C:H<Ag+Ti> films was described
theoretically in two ways: using the classical theory of percolation and a general effective medium (GEM)
theory. Staircase percolation can be seen from the experimental results. The first percolation threshold occurs at
the concentration xc = 0.015 and the second one - at xc = 0.07. This could take place due to the fact that a-
C:H<Ag+Ti> composite material consist of two different inclusions, silver and titanium dioxide nanoparticles.
The percolation mechanism of a-C:H<Ag+Ti> film conductivity could be described by classical percolation
theory and by effective medium model as well.
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| first_indexed | 2024-03-11T14:44:09Z |
| format | Article |
| id | doaj.art-3f919cdcb74a468ba59ed264180462d8 |
| institution | Directory Open Access Journal |
| issn | 2409-6121 |
| language | English |
| last_indexed | 2024-03-11T14:44:09Z |
| publishDate | 2018-05-01 |
| publisher | Al-Farabi Kazakh National University |
| record_format | Article |
| series | Physical Sciences and Technology |
| spelling | doaj.art-3f919cdcb74a468ba59ed264180462d82023-10-30T13:11:22ZengAl-Farabi Kazakh National UniversityPhysical Sciences and Technology2409-61212018-05-0132The percolation mechanism of conductivity in nanocomposite a-C:H<Ag+Ti> filmsYe.S. MukhametkarimovS.L. MikhailovaK. DautkhanA. BashenZh.N. ZhumatayevO.V. RofmanS.Ya. MaksimovaO.Yu. Prikhodko The presented work is about percolation mechanism of electrical conductivity of composite a-C:H<Ag+Ti> films. The a-C:H<Ag+Ti> thin films were deposited onto quartz substrates by ion-plasma magnetron sputtering method. High purity argon (Ar) and methane (CH4) gases mixture and combined target of polycrystalline graphite with the purity of 99.99%, silver (99.99%) and titanium (99.99%) were used to produce а- С:Н<Ag+Ti> films. Resistance of the produced films has been measured using «two probe» method to obtain concentration dependence of electrical conductivity. Conductivity of a-C:H<Ag+Ti> films was described theoretically in two ways: using the classical theory of percolation and a general effective medium (GEM) theory. Staircase percolation can be seen from the experimental results. The first percolation threshold occurs at the concentration xc = 0.015 and the second one - at xc = 0.07. This could take place due to the fact that a- C:H<Ag+Ti> composite material consist of two different inclusions, silver and titanium dioxide nanoparticles. The percolation mechanism of a-C:H<Ag+Ti> film conductivity could be described by classical percolation theory and by effective medium model as well. http://phst/index.php/journal/article/view/109 |
| spellingShingle | Ye.S. Mukhametkarimov S.L. Mikhailova K. Dautkhan A. Bashen Zh.N. Zhumatayev O.V. Rofman S.Ya. Maksimova O.Yu. Prikhodko The percolation mechanism of conductivity in nanocomposite a-C:H<Ag+Ti> films Physical Sciences and Technology |
| title | The percolation mechanism of conductivity in nanocomposite a-C:H<Ag+Ti> films |
| title_full | The percolation mechanism of conductivity in nanocomposite a-C:H<Ag+Ti> films |
| title_fullStr | The percolation mechanism of conductivity in nanocomposite a-C:H<Ag+Ti> films |
| title_full_unstemmed | The percolation mechanism of conductivity in nanocomposite a-C:H<Ag+Ti> films |
| title_short | The percolation mechanism of conductivity in nanocomposite a-C:H<Ag+Ti> films |
| title_sort | percolation mechanism of conductivity in nanocomposite a c h ag ti films |
| url | http://phst/index.php/journal/article/view/109 |
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