Evidence of phase transitions in MoO2 single crystals
| Autor: | M. S. da Luz, S. H. Masunaga, John J. Neumeier, A. Rebello, B. S. de Lima, L. M. S. Alves, J. B. Leão, F. S. Oliveira, Carlos Giles, C. A. M. dos Santos |
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| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Phase transition Work (thermodynamics) Materials science Mechanical Engineering Neutron diffraction Metals and Alloys 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Heat capacity Thermal expansion 0104 chemical sciences Crystallography Electrical resistance and conductance Mechanics of Materials Electrical resistivity and conductivity Chemical physics Materials Chemistry 0210 nano-technology LIGAS BINÁRIAS |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2017.02.148 |
| Popis: | In this work, structural and physical properties are revisited in the MoO2 compound. MoO2 single crystals have been prepared by chemical vapor transport technique and characterized by X-ray diffraction, neutron diffraction, high-resolution thermal expansion, electrical resistance measurements, and heat capacity. Electrical resistivity, heat capacity, and thermal expansion measurements show two clear features which are related to phase transitions on the MoO2 compound. These results suggest that an electronic-type transition occurs near 220 K and a structural transition at ∼267 K. |
| Databáze: | OpenAIRE |
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