INVESTIGADORES
FRECHERO marisa Alejandra
artículos
Título:
Effect of Ag2O on the conductive behaviour of silver vanadium tellurite glasses “: Part II .
Autor/es:
MONTANI R. A; LORENTE, A.; FRECHERO M. A.
Revista:
SOLID STATE IONICS
Referencias:
Año: 2002 vol. 146 p. 323 - 327
ISSN:
0167-2738
Resumen:
In a previous work, the effect of the Ag2O on the electrical conductivity of vanadium tellurite glasses of the form2O on the electrical conductivity of vanadium tellurite glasses of the form XAg2O(1X)V2O52TeO2 has been studied by using the impedance spectroscopy in a wide range of temperature and composition. The obtained results confirm the existence of a transition from a typically electronic (polaronic) conductive regime when the molar fraction (X) of Ag2O is equal to 0, to an ionic conductive regime when X tends to be 1. This transition is characterised by a deep minimum in the electrical conductivity of about three orders of magnitude. In the present paper, a complementary study of the system of the form 0.27Ag2O0.73[ YV2O5(1Y)TeO2] is presented. In this system, there also exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. characterised by a deep minimum in the electrical conductivity of about three orders of magnitude. In the present paper, a complementary study of the system of the form 0.27Ag2O0.73[ YV2O5(1Y)TeO2] is presented. In this system, there also exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. composition. The obtained results confirm the existence of a transition from a typically electronic (polaronic) conductive regime when the molar fraction (X) of Ag2O is equal to 0, to an ionic conductive regime when X tends to be 1. This transition is characterised by a deep minimum in the electrical conductivity of about three orders of magnitude. In the present paper, a complementary study of the system of the form 0.27Ag2O0.73[ YV2O5(1Y)TeO2] is presented. In this system, there also exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. characterised by a deep minimum in the electrical conductivity of about three orders of magnitude. In the present paper, a complementary study of the system of the form 0.27Ag2O0.73[ YV2O5(1Y)TeO2] is presented. In this system, there also exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. Ag2O(1X)V2O52TeO2 has been studied by using the impedance spectroscopy in a wide range of temperature and composition. The obtained results confirm the existence of a transition from a typically electronic (polaronic) conductive regime when the molar fraction (X) of Ag2O is equal to 0, to an ionic conductive regime when X tends to be 1. This transition is characterised by a deep minimum in the electrical conductivity of about three orders of magnitude. In the present paper, a complementary study of the system of the form 0.27Ag2O0.73[ YV2O5(1Y)TeO2] is presented. In this system, there also exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. characterised by a deep minimum in the electrical conductivity of about three orders of magnitude. In the present paper, a complementary study of the system of the form 0.27Ag2O0.73[ YV2O5(1Y)TeO2] is presented. In this system, there also exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. X) of Ag2O is equal to 0, to an ionic conductive regime when X tends to be 1. This transition is characterised by a deep minimum in the electrical conductivity of about three orders of magnitude. In the present paper, a complementary study of the system of the form 0.27Ag2O0.73[ YV2O5(1Y)TeO2] is presented. In this system, there also exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate. 2O0.73[ YV2O5(1Y)TeO2] is presented. In this system, there also exists such a transition, but now, from an ionic to an electronic conductive regime. The correlated behaviour between conductivity and the mean silver-silver and vanadium-vanadium distances indicates that a concentration-based explanation is appropriate.