Movilidad de oxígeno en conductores iónicos A 2Ti2-yZryO7 (A: Y, Gd)

K. J. Moreno; G. Mendoza-Suárez; A. F. Fuentes; J. García-Barriocanal; C. León; J. Santamaría

doi:10.3989/cyv.2004.v43.i4.426

Movilidad de oxígeno en conductores iónicos A ₂Ti_2-yZr_yO₇ (A: Y, Gd)

Translated title of the contribution: Oxygen mobility in A2Ti2-yZryO7 (A: Y, Gd) ionic conductors

K. J. Moreno, G. Mendoza-Suárez, A. F. Fuentes, J. García-Barriocanal, C. León, J. Santamaría

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3 Scopus citations

Abstract

We report a study of ionic conductivity in the series Y₂Ti _2-yZr_yO₇ and Gd₂Ti _2-yZr_yO₇ (0≤y≤2) obtained by mechanochemical synthesis. We present a study of oxygen ion dynamics in these materials by Impedance Spectroscopy. The change in dc conductivity and activation energy with Zr content is interpreted in terms of the increase in the number of oxygen vacancies and of structural disorder when increasing Zr content.

Translated title of the contribution	Oxygen mobility in A2Ti2-yZryO7 (A: Y, Gd) ionic conductors
Original language	Spanish
Pages (from-to)	759-763
Number of pages	5
Journal	Boletin de la Sociedad Espanola de Ceramica y Vidrio
Volume	43
Issue number	4
DOIs	https://doi.org/10.3989/cyv.2004.v43.i4.426
State	Published - 2004

Keywords

Impedance spectroscopy
Ionic mobility
Mechanochemical synthesis
Pyrochlores

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Cite this

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title = "Movilidad de ox{\'i}geno en conductores i{\'o}nicos A 2Ti2-yZryO7 (A: Y, Gd)",

abstract = "We report a study of ionic conductivity in the series Y2Ti 2-yZryO7 and Gd2Ti 2-yZryO7 (0≤y≤2) obtained by mechanochemical synthesis. We present a study of oxygen ion dynamics in these materials by Impedance Spectroscopy. The change in dc conductivity and activation energy with Zr content is interpreted in terms of the increase in the number of oxygen vacancies and of structural disorder when increasing Zr content.",

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AU - Moreno, K. J.

AU - Mendoza-Suárez, G.

AU - Fuentes, A. F.

AU - García-Barriocanal, J.

AU - León, C.

AU - Santamaría, J.

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AB - We report a study of ionic conductivity in the series Y2Ti 2-yZryO7 and Gd2Ti 2-yZryO7 (0≤y≤2) obtained by mechanochemical synthesis. We present a study of oxygen ion dynamics in these materials by Impedance Spectroscopy. The change in dc conductivity and activation energy with Zr content is interpreted in terms of the increase in the number of oxygen vacancies and of structural disorder when increasing Zr content.

KW - Impedance spectroscopy

KW - Ionic mobility

KW - Mechanochemical synthesis

KW - Pyrochlores

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