Synthesis, crystal structure, stoichiometry and magnetic properties of (Ca1-xSrx)VO3

J. Garcia-Jaca; J. L. Mesa; M. Insausli; J. I.R. Larramendi; M. I. Arriortua; T. Rojo

doi:10.1016/S0025-5408(99)00002-1

Synthesis, crystal structure, stoichiometry and magnetic properties of (Ca_1-xSr_x)VO₃

J. Garcia-Jaca^*
, J. L. Mesa
, M. Insausli
, J. I.R. Larramendi
, M. I. Arriortua
, T. Rojo

^*Autor correspondiente de este trabajo

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

31 Citas (Scopus)

Resumen

The alkaline-earth metal vanadium(IV) oxide system with formula (Ca_1-xSr_x)VO₃ has been synthesized using the metallo-organic method. The oxides prepared at temperatures of 1073-1173 K showed the presence of an oxygen excess while those obtained at higher temperatures (1273 K) where found to be stoichiometric. The crystal structure of these oxides (stoichiometric and non-stoichiometric) is perovskite with different symmetry depending on the strontium substitution: orthorhombic (0≤x≤0.2), tetragonal (0.3≤x≤0.4), and cubic (0.75≤x≤1). The influence of strontium substitution on the [VO₆] groups symmetry was also observed by vibrational spectroscopy. The electrical properties of the oxides are not extensively influenced by the stoichiometry and cation substitution.

Idioma original	Inglés
Páginas (desde-hasta)	289-301
Número de páginas	13
Publicación	Materials Research Bulletin
Volumen	34
N.º	2
DOI	https://doi.org/10.1016/S0025-5408(99)00002-1
Estado	Publicada - 15 ene 1999
Publicado de forma externa	Sí

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10.1016/S0025-5408(99)00002-1

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abstract = "The alkaline-earth metal vanadium(IV) oxide system with formula (Ca1-xSrx)VO3 has been synthesized using the metallo-organic method. The oxides prepared at temperatures of 1073-1173 K showed the presence of an oxygen excess while those obtained at higher temperatures (1273 K) where found to be stoichiometric. The crystal structure of these oxides (stoichiometric and non-stoichiometric) is perovskite with different symmetry depending on the strontium substitution: orthorhombic (0≤x≤0.2), tetragonal (0.3≤x≤0.4), and cubic (0.75≤x≤1). The influence of strontium substitution on the [VO6] groups symmetry was also observed by vibrational spectroscopy. The electrical properties of the oxides are not extensively influenced by the stoichiometry and cation substitution.",

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AU - Garcia-Jaca, J.

AU - Mesa, J. L.

AU - Insausli, M.

AU - Larramendi, J. I.R.

AU - Arriortua, M. I.

AU - Rojo, T.

PY - 1999/1/15

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N2 - The alkaline-earth metal vanadium(IV) oxide system with formula (Ca1-xSrx)VO3 has been synthesized using the metallo-organic method. The oxides prepared at temperatures of 1073-1173 K showed the presence of an oxygen excess while those obtained at higher temperatures (1273 K) where found to be stoichiometric. The crystal structure of these oxides (stoichiometric and non-stoichiometric) is perovskite with different symmetry depending on the strontium substitution: orthorhombic (0≤x≤0.2), tetragonal (0.3≤x≤0.4), and cubic (0.75≤x≤1). The influence of strontium substitution on the [VO6] groups symmetry was also observed by vibrational spectroscopy. The electrical properties of the oxides are not extensively influenced by the stoichiometry and cation substitution.

AB - The alkaline-earth metal vanadium(IV) oxide system with formula (Ca1-xSrx)VO3 has been synthesized using the metallo-organic method. The oxides prepared at temperatures of 1073-1173 K showed the presence of an oxygen excess while those obtained at higher temperatures (1273 K) where found to be stoichiometric. The crystal structure of these oxides (stoichiometric and non-stoichiometric) is perovskite with different symmetry depending on the strontium substitution: orthorhombic (0≤x≤0.2), tetragonal (0.3≤x≤0.4), and cubic (0.75≤x≤1). The influence of strontium substitution on the [VO6] groups symmetry was also observed by vibrational spectroscopy. The electrical properties of the oxides are not extensively influenced by the stoichiometry and cation substitution.

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