Title of article
Oxygen transport at the interface of La0.92MnO3−x film/Y0.15Zr0.85O1.925 single crystal
Author/Authors
Horita، نويسنده , , Teruhisa and Yamaji، نويسنده , , Katsuhiko and Negishi، نويسنده , , Hideyuki and Sakai، نويسنده , , Natsuko and Yokokawa، نويسنده , , Harumi and Kato، نويسنده , , Tohru، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2000
Pages
8
From page
897
To page
904
Abstract
Oxygen transport was investigated at the interface of A-site deficient La0.92MnO3−x film/Y0.15Zr0.85O1.925 single crystal at 1073 K. Isotope oxygen exchange (16O/18O exchange) and secondary ion mass spectrometry analysis (SIMS analysis) were adopted to measure the oxygen diffusion profiles at the interface. It has been found that the as-deposited film, without heat treatment, exhibited a higher diffusivity than the La0.92MnO3 bulk, and its interface with Y0.15Zr0.85O1.925 single crystal acted as an oxide-ion blocking layer. Annealing at a temperature of 1273–1373 K made a contact between La0.92MnO3−x film and Y0.15Zr0.85O1.925 single crystal with many small spots, which were the pathways of oxygen diffusion. Annealing above 1473 K, a significant interdiffusion of cations and morphological change occurred at the interface. Although the oxygen diffusivity decreased in the La0.92MnO3−x film, smooth diffusion profiles were observed at the interface of La0.92MnO3−x film/Y0.15Zr0.85O1.925 single crystal.
Keywords
LaMnO3?x , oxygen transport , SOFC , YSZ , Isotope oxygen exchange , Interface
Journal title
Solid State Ionics
Serial Year
2000
Journal title
Solid State Ionics
Record number
1708113
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