Half-metallic electronic feature and thermophysical properties of the Ba₂CoMoO₆ perovskite-like cobalt molybdate
Perovskite-like materials which include magnetic elements have relevance due to the technological perspectives in the spintronics industry. In this work, the magnetic, structural and electronic properties of the Ba₂CoMoO₆ double perovskite are investigated. Calculations are carried out through the F...
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| Autores principales: | , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2020
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/142088 |
| Aporte de: |
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I19-R120-10915-142088 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ingeniería Física complex perovskite half-metallicity electronic structure equilibrium properties perovskita compleja espín-metalicidad estructura electrónica propiedades de equilibrio |
| spellingShingle |
Ingeniería Física complex perovskite half-metallicity electronic structure equilibrium properties perovskita compleja espín-metalicidad estructura electrónica propiedades de equilibrio Deluque Toro, Críspulo E. Gil Rebaza, Arles Víctor Villa Hernández, Jorge I. Landínez-Téllez, David A. Roa Rojas, Jairo Half-metallic electronic feature and thermophysical properties of the Ba₂CoMoO₆ perovskite-like cobalt molybdate |
| topic_facet |
Ingeniería Física complex perovskite half-metallicity electronic structure equilibrium properties perovskita compleja espín-metalicidad estructura electrónica propiedades de equilibrio |
| description |
Perovskite-like materials which include magnetic elements have relevance due to the technological perspectives in the spintronics industry. In this work, the magnetic, structural and electronic properties of the Ba₂CoMoO₆ double perovskite are investigated. Calculations are carried out through the Full-Potential Linear Augmented Plane Wave method within the framework of the Density Functional Theory with exchange and correlation effects in the Generalized Gradient and Local Density approximations, including spin polarization. From the minimization of energy as a function of volume using Murnaghan’s state equation the equilibrium lattice parameter and cohesive properties of this compound were obtained. The study of the electronic structure was based in the analysis of the electronic density of states, and the band structure, showing that this compound evidences a conductive character for a spin channel and insulation for the other, and presents an integer value for the effective magnetic moment (3.0 μ<sub>B</sub>), which allows it to be classified as a half-metallic material. The effects of pressure and temperature on thermophysical properties such as specific heat, Debye temperature, coefficient of thermal expansion and the Grüneisen parameter were calculated and analyzed from the state equation of the system. Obtained results reveal that, in the low-temperature regime, the specific heat at constant volume and pressure presents an analogous behavior to each other, with a tendency to the limit of Dulong-Petit typical of the structures of cubic perovskite-type, showing a value of 246.3 J/mol.K at constant volume and slightly higher values at constant pressure. The dependence of the thermal expansion coefficient, the temperature of Debye and the Grüneisen parameter with the increase in temperature are discussed in relation to other perovskite-like materials. |
| format |
Articulo Articulo |
| author |
Deluque Toro, Críspulo E. Gil Rebaza, Arles Víctor Villa Hernández, Jorge I. Landínez-Téllez, David A. Roa Rojas, Jairo |
| author_facet |
Deluque Toro, Críspulo E. Gil Rebaza, Arles Víctor Villa Hernández, Jorge I. Landínez-Téllez, David A. Roa Rojas, Jairo |
| author_sort |
Deluque Toro, Críspulo E. |
| title |
Half-metallic electronic feature and thermophysical properties of the Ba₂CoMoO₆ perovskite-like cobalt molybdate |
| title_short |
Half-metallic electronic feature and thermophysical properties of the Ba₂CoMoO₆ perovskite-like cobalt molybdate |
| title_full |
Half-metallic electronic feature and thermophysical properties of the Ba₂CoMoO₆ perovskite-like cobalt molybdate |
| title_fullStr |
Half-metallic electronic feature and thermophysical properties of the Ba₂CoMoO₆ perovskite-like cobalt molybdate |
| title_full_unstemmed |
Half-metallic electronic feature and thermophysical properties of the Ba₂CoMoO₆ perovskite-like cobalt molybdate |
| title_sort |
half-metallic electronic feature and thermophysical properties of the ba₂comoo₆ perovskite-like cobalt molybdate |
| publishDate |
2020 |
| url |
http://sedici.unlp.edu.ar/handle/10915/142088 |
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Repositorios |
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