Theoretical investigation EuTiO3 in three structures; optical, electrical and magnetic properties
Título del documento: Theoretical investigation EuTiO3 in three structures; optical, electrical and magnetic properties
Revista: Revista mexicana de física
Base de datos: PERIÓDICA
Número de sistema: 000460953
ISSN: 0035-001X
Autores: 1
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Instituciones: 1Mohammed V University of Rabat, Faculty of Sciences, Rabat, Rabat-Sale. Marruecos
Año:
Periodo: Nov-Dic
Volumen: 64
Número: 6
Paginación: 553-558
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, teórico
Resumen en inglés We present a systematic first-principles study of the structural, magnetic and optical properties of perovskite-structure EuTiO3. This compound exists in different structures: cubic, tetragonal and presents multiferroic properties. Comparing the formation energy between tetragonal and cubic structures, the system has a tendency to symmetry lowering structural deformations composed of rotations of the oxygen octahedra, especially the I4/mcm phase is the most stable structure. Our calculations of the high symmetry cubic structural prototype show an antiferromagnetic order type G. We discuss the dynamical stability of Pm-3m, P4mm and I4-mcm structures, and the influence of some parameters on the magnetic coupling and the electrical polarization
Disciplinas: Física y astronomía
Palabras clave: Física,
Orden multiferroso,
Acoplamiento magnético,
Polarización,
Wien2K
Keyword: Physics,
Multiferroic order,
Magnetic coupling,
Polarization,
Wien2K
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