The formation of oriented barium carbonate from the decomposition of yttria-doped barium zirconate films

SCRIPTA MATERIALIA

卷:186

Article

Jennings, D.¹  Ricote, S.²  Santiso, J.^3,4  Reimanis, I¹ 

[1] Colorado Ctr Adv Ceram, Colorado Sch Mines, Met & Mat Engn Dept, 1500 Illinois St, Golden, CO 80401 USA

[2] Colorado Sch Mines, Mech Engn Dept, 1500 Illinois St, Golden, CO 80401 USA

[3] CSIC, Catalan Inst Nanosci & Nanotechnol, ICN2, Campus UAB, Barcelona 08193, Spain

[4] Barcelona Inst Sci & Technol, Campus UAB, Barcelona 08193, Spain

关键词: Barium zirconate;    Thin film;    Decomposition;    Barium carbonate;   

DOI  :  10.1016/j.scriptamat.2020.05.028

来源: Elsevier

【 摘 要 】

Yttria doped barium zirconate (BZY) thin films show promise thanks to their high proton conductivities and their possibility for use in studying fundamental processes such as exsolution. This work demonstrates that highly oriented BZY thin (45 nm) films on (100) single crystal strontium titanate decompose into oriented barium carbonate rods and yttria stabilized zirconia when exposed to industrial grade Ar or pure CO2 at 800 degrees C. It is shown with transmission electron microscopy that the rods nucleate on the BZY surface. The causes and modes of decomposition in these thin films are discussed in detail. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free