INVESTIGADORES
FRECHERO marisa Alejandra
artículos
Título:
Mixed ion-polaron transport in lithium vanadiummolybdenum tellurite glasses.
Autor/es:
R.A. MONTANI; M.A. FRECHERO
Revista:
SOLID STATE IONICS
Referencias:
Año: 2006 vol. 177 p. 2911 - 2915
ISSN:
0167-2738
Resumen:
The electrical properties of mixed ion-polaron conducting vanadium tellurite glasses of the form XLi2O·(1.X)[0.5V2O5·0.5MoO3]2TeO2 have
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 Li2O is equal to 0, to an ionic conductive
regime when X tends to 1. This transition is characterised by a deep minimum in the electrical conductivity of about 3 orders of magnitude. The
correlated behaviour between conductivity and the mean distance between lithium ions and between vanadium ions reinforces the key idea of two
independent migrating paths for both electrons and ions, respectively.XLi2O·(1.X)[0.5V2O5·0.5MoO3]2TeO2 have
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 Li2O is equal to 0, to an ionic conductive
regime when X tends to 1. This transition is characterised by a deep minimum in the electrical conductivity of about 3 orders of magnitude. The
correlated behaviour between conductivity and the mean distance between lithium ions and between vanadium ions reinforces the key idea of two
independent migrating paths for both electrons and ions, respectively.X) of Li2O is equal to 0, to an ionic conductive
regime when X tends to 1. This transition is characterised by a deep minimum in the electrical conductivity of about 3 orders of magnitude. The
correlated behaviour between conductivity and the mean distance between lithium ions and between vanadium ions reinforces the key idea of two
independent migrating paths for both electrons and ions, respectively.X tends to 1. This transition is characterised by a deep minimum in the electrical conductivity of about 3 orders of magnitude. The
correlated behaviour between conductivity and the mean distance between lithium ions and between vanadium ions reinforces the key idea of two
independent migrating paths for both electrons and ions, respectively.