Polaron hopping conduction in manganese borosilicate glass
| Autor: | Piotr Kupracz, Marta Prześniak-Welenc, Natalia Anna Wójcik, Ryszard Barczyński, Marcin Łapiński, A. Lenarciak |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Borosilicate glass Inorganic chemistry chemistry.chemical_element 02 engineering and technology Manganese Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Polaron Alkali metal 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Amorphous solid chemistry X-ray photoelectron spectroscopy Materials Chemistry Ceramics and Composites Charge carrier 0210 nano-technology |
| Zdroj: | Journal of Non-Crystalline Solids. 458:15-21 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2016.12.008 |
| Popis: | A study on a novel material - manganese borosilicate glass without alkali metals, was reported. It was found that the obtained samples containing high amount of manganese oxide (60MnO–xSiO 2 –(40 − x)B 2 O 3 , x = 5, 10, 15, 20 and 30 mol%) were amorphous and homogeneous. XPS measurements showed that most of manganese ions are at oxidation level of Mn 2 + ions and the mean oxidation level slightly moves toward higher value, with increasing in SiO 2 content. The conductivity was described in the terms of thermally activated polaron hopping with a charge carrier centred on Mn ions. It was shown, that the conductivity strongly depends on the mean Mn–Mn distance. |
| Databáze: | OpenAIRE |
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