Enhancement of oxygen surface exchange at the hetero-interface of (La,Sr) CoO3 / (La,Sr) 2 CoO4 with PLD-layered films

M. Sase; F. Hermes; K. Yashiro; K. Sato; J. Mizusaki; T. Kawada; N. Sakai; H. Yokokawa

doi:10.1149/1.2928612

Enhancement of oxygen surface exchange at the hetero-interface of (La,Sr) CoO3 / (La,Sr) 2 CoO4 with PLD-layered films

M. Sase, F. Hermes, K. Yashiro, K. Sato, J. Mizusaki, T. Kawada, N. Sakai, H. Yokokawa

Research output: Contribution to journal › Article › peer-review

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Abstract

The preferential site for oxygen isotope exchange was investigated on layered films of La2-x Srx CoO4 (x=0.5,1.0) / La0.6 Sr0.4 CoO3 prepared by pulsed laser deposition (PLD) on a polycrystalline Ce0.9 Gd0.1 O1.95. An isotope exchange experiment was performed at 773 K in O 18 -enriched oxygen of 0.2× 105 Pa. Three-dimensional imaging of secondary ion mass spectrometry (SIMS) was carried out to visualize the isotope distribution. The SIMS images suggested that there are fast oxygen-incorporation paths along the hetero-phase interface of La2-x Srx CoO4 / La0.6 Sr0.4 CoO3. The results have reproduced our former findings on the fast oxygen surface exchange with La2-x Srx CoO4 / La0.6 Sr0.4 CoO3 composite polycrystals.

Original language	English
Pages (from-to)	B793-B797
Journal	Journal of the Electrochemical Society
Volume	155
Issue number	8
DOIs	https://doi.org/10.1149/1.2928612
Publication status	Published - 2008

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@article{b3628730600440d6b4957fbdbb2af24e,

title = "Enhancement of oxygen surface exchange at the hetero-interface of (La,Sr) CoO3 / (La,Sr) 2 CoO4 with PLD-layered films",

abstract = "The preferential site for oxygen isotope exchange was investigated on layered films of La2-x Srx CoO4 (x=0.5,1.0) / La0.6 Sr0.4 CoO3 prepared by pulsed laser deposition (PLD) on a polycrystalline Ce0.9 Gd0.1 O1.95. An isotope exchange experiment was performed at 773 K in O 18 -enriched oxygen of 0.2× 105 Pa. Three-dimensional imaging of secondary ion mass spectrometry (SIMS) was carried out to visualize the isotope distribution. The SIMS images suggested that there are fast oxygen-incorporation paths along the hetero-phase interface of La2-x Srx CoO4 / La0.6 Sr0.4 CoO3. The results have reproduced our former findings on the fast oxygen surface exchange with La2-x Srx CoO4 / La0.6 Sr0.4 CoO3 composite polycrystals.",

author = "M. Sase and F. Hermes and K. Yashiro and K. Sato and J. Mizusaki and T. Kawada and N. Sakai and H. Yokokawa",

year = "2008",

doi = "10.1149/1.2928612",

language = "English",

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pages = "B793--B797",

journal = "Journal of the Electrochemical Society",

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T1 - Enhancement of oxygen surface exchange at the hetero-interface of (La,Sr) CoO3 / (La,Sr) 2 CoO4 with PLD-layered films

AU - Sase, M.

AU - Hermes, F.

AU - Yashiro, K.

AU - Sato, K.

AU - Mizusaki, J.

AU - Kawada, T.

AU - Sakai, N.

AU - Yokokawa, H.

PY - 2008

Y1 - 2008

N2 - The preferential site for oxygen isotope exchange was investigated on layered films of La2-x Srx CoO4 (x=0.5,1.0) / La0.6 Sr0.4 CoO3 prepared by pulsed laser deposition (PLD) on a polycrystalline Ce0.9 Gd0.1 O1.95. An isotope exchange experiment was performed at 773 K in O 18 -enriched oxygen of 0.2× 105 Pa. Three-dimensional imaging of secondary ion mass spectrometry (SIMS) was carried out to visualize the isotope distribution. The SIMS images suggested that there are fast oxygen-incorporation paths along the hetero-phase interface of La2-x Srx CoO4 / La0.6 Sr0.4 CoO3. The results have reproduced our former findings on the fast oxygen surface exchange with La2-x Srx CoO4 / La0.6 Sr0.4 CoO3 composite polycrystals.

AB - The preferential site for oxygen isotope exchange was investigated on layered films of La2-x Srx CoO4 (x=0.5,1.0) / La0.6 Sr0.4 CoO3 prepared by pulsed laser deposition (PLD) on a polycrystalline Ce0.9 Gd0.1 O1.95. An isotope exchange experiment was performed at 773 K in O 18 -enriched oxygen of 0.2× 105 Pa. Three-dimensional imaging of secondary ion mass spectrometry (SIMS) was carried out to visualize the isotope distribution. The SIMS images suggested that there are fast oxygen-incorporation paths along the hetero-phase interface of La2-x Srx CoO4 / La0.6 Sr0.4 CoO3. The results have reproduced our former findings on the fast oxygen surface exchange with La2-x Srx CoO4 / La0.6 Sr0.4 CoO3 composite polycrystals.

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JF - Journal of the Electrochemical Society

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Enhancement of oxygen surface exchange at the hetero-interface of (La,Sr) CoO3 / (La,Sr) 2 CoO4 with PLD-layered films

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