| Publons ID | 7909950 |
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| Wos ID | WOS:000316241500023 |
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| Doi | 10.1016/j.matchemphys.2012.11.040 |
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| Title | Natural Fe<sub>3</sub>O<sub>4</sub> nanoparticles embedded zinc-tellurite glasses: Polarizability and optical properties |
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| First Author | |
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| Last Author | |
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| Authors | Widanarto, W; Sahar, MR; Ghoshal, SK; Arifin, R; Rohani, MS; Hamzah, K; Jandra, M; |
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| Publish Date | FEB 15 2013 |
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| Journal Name | MATERIALS CHEMISTRY AND PHYSICS |
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| Citation | 40 |
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| Abstract | Modifying the optical behavior of zinc-tellurite glass by embedding magnetic nanoparticles has implication in nanophotonics. A series of zinc-tellurite glasses containing natural Fe3O4 nanoparticles with composition (80 - x)TeO2 center dot xFe(3)O(4)center dot 20ZnO (0 <= x <= 2) in mol% are synthesized by melt quenching method and their optical properties are investigated using FTIR and UV-vis-NIR spectroscopies. Lorentz-Lorenz relations are exploited to determine the refractive index, molar refraction and electronic polarizability. The sharp absorption peaks of FTIR spectra show a shift from 667 cm(-1) to 671 cm(-1) in the presence of nanoparticles that increase the non-bridging oxygen, confirmed by the intensity change of the TeO3 peak at 752 cm(-1). A new peak around 461 cm(-1) is also observed which is attributed to the band characteristic of covalent Fe-O linkages. A decrease in the Urbach energy as much as 0.122 eV and the optical energy band gap with the increase of Fe3O4 concentration (0.5-1.0 mol%) is evidenced. Electronic polarizability of the glasses increases with increasing Fe3O4 nanoparticles concentration up to 1 mol%. Interestingly, the polarizability tends to decrease with the further increase of Fe3O4 concentration at 2 mol%. The role of magnetic nanoparticles in influencing the structural and optical behavior are examined and understood. (C) 2012 Elsevier B.V. All rights reserved. |
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| Publish Type | Journal |
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| Publish Year | 2013 |
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| Page Begin | 174 |
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| Page End | 178 |
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| Issn | 0254-0584 |
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| Eissn | 1879-3312 |
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| Url | https://www.webofscience.com/wos/woscc/full-record/WOS:000316241500023 |
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| Author | Dr R WAHYU WIDANARTO, S.Si, M.Si |
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| File | 2753.pdf |
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