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

被引：100

作者：

Sase, M. ^{[1
,2
]}

Hermes, F. ^{[2
]}

Yashiro, K. ^{[2
]}

Sato, K. ^{[2
]}

Mizusaki, J. ^{[2
]}

Kawada, T. ^{[1
]}

Sakai, N. ^{[3
]}

Yokokawa, H. ^{[3
]}

机构：

[1] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[3] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2008年 / 155卷 / 08期

关键词：

D O I：

10.1149/1.2928612

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The preferential site for oxygen isotope exchange was investigated on layered films of La(2-x)Sr(x)CoO(4) (x=0.5,1.0)/La(0.6)Sr(0.4)CoO(3) prepared by pulsed laser deposition (PLD) on a polycrystalline Ce(0.9)Gd(0.1)O(1.95). An isotope exchange experiment was performed at 773 K in (18)O-enriched oxygen of 0.2x10(5) 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 La(2-x)Sr(x)CoO(4)/La(0.6)Sr(0.4)CoO(3). The results have reproduced our former findings on the fast oxygen surface exchange with La(2-x)Sr(x)CoO(4)/La(0.6)Sr(0.4)CoO(3) composite polycrystals. (C) 2008 The Electrochemical Society.

引用

页码：B793 / B797

页数：5

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