| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000390411 |
| ISSN: | 0103-9733 |
| Authors: | Alves, L.M.S1 Benaion, S.S1 Romanelli, C.M1 Santos, C.A.M. dos1 Luz, M.S. da1 Lima, B.S. de1 Oliveira, F.S1 Machado, A.J.S1 Guedes, E.B2 Abbate, M2 Mossanek, R.J.O2 |
| Institutions: | 1Universidade de Sao Paulo, Escola de Engenharia de Lorena, Lorena, Sao Paulo. Brasil 2Universidade Federal do Parana, Departamento de Fisica, Curitiba, Parana. Brasil |
| Year: | 2015 |
| Season: | Abr |
| Volumen: | 45 |
| Number: | 2 |
| Pages: | 234-237 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | MoOy with 1.85≤y≤2.20 has been studied by X-ray diffractometry and photoemission spectroscopy at room temperature and by electrical resistance as a function of temperature from 2 to 300 K. Although X-ray diffractograms are very similar to the stoichiometric MoO2 with monoclinic structure of the space group P21/c (14), the electrical properties are strongly dependent on the oxygen composition. Samples with y=1.85 and 1.90 show anomalous behavior in electrical conductivity. Photoemission and X-ray absorption spectroscopy measurements suggest that this anomalous behavior is related to the presence of Mo3+ ions such as in KxMoO2 compound |
| Disciplines: | Física y astronomía |
| Keyword: | Física de materia condensada, Oxido de molibdeno, Espectroscopia fotoelectrónica, Resistividad eléctrica |
| Keyword: | Physics and astronomy, Condensed matter physics, Molybdenum oxide, Photoelectron spectroscopy, Electrical resistivity |
| Full text: | Texto completo (Ver PDF) |
