Electrical Resistivity in Non-stoichiometric MoO2



Título del documento: Electrical Resistivity in Non-stoichiometric MoO2
Revista: Brazilian journal of physics
Base de datos: PERIÓDICA
Número de sistema: 000390411
ISSN: 0103-9733
Autores: 1
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Instituciones: 1Universidade de Sao Paulo, Escola de Engenharia de Lorena, Lorena, Sao Paulo. Brasil
2Universidade Federal do Parana, Departamento de Fisica, Curitiba, Parana. Brasil
Año:
Periodo: Abr
Volumen: 45
Número: 2
Paginación: 234-237
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés 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
Disciplinas: Física y astronomía
Palabras clave: Física de materia condensada,
Oxido de molibdeno,
Espectroscopia fotoelectrónica,
Resistividad eléctrica
Keyword: Physics and astronomy,
Condensed matter physics,
Molybdenum oxide,
Photoelectron spectroscopy,
Electrical resistivity
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