Departmental Papers (CBE)
Document Type
Journal Article
Date of this Version
11-30-2010
Abstract
Atomic force microscopy and electron microscopy with energy dispersive X-ray analysis was used to characterize changes in teh structure and composition of La0.8Sr0.2MnO3 (LSM) nanoparticles supported on single crystal YSZ (100) (yttria-stabilized zirconia) and SrTiO3(100) surfaces as a function of temperature and exposure to oxidizing and reducing environments. On YSZ(100), LSM particles were found to decompose into Mn- and La-rich phases and spread over the surface upon calcination in air at temperatures above 1123 K. The Mn-rich phase was observed to have a higher mobility and spread more rapidly. In contrast to YSZ(100), on SrTiO3(100) the LSM particles underwent agglomeration via an Ostwald ripening mechanism upon calcination at temperatures above 1123 K, resulting in an increase in the particle size. Phase separation was not observed on this substrate.
Recommended Citation
Kim, J., Lee, S., Gorte, R. J., & Vohs, J. M. (2010). Substrate-Mediated Spreading and Phase Segregation at LSM-Zirconia Interfaces. Retrieved from https://repository.upenn.edu/cbe_papers/139
Date Posted: 02 December 2010
This document has been peer reviewed.
Comments
Suggested Citation:
Kim, J.S., Lee, S., Gorte, R.J. and J.M. Vohs. (2010). "Substrate-Mediated Spreading and Phase Segregation at LSM-Zirconia Interfaces." Journal of the Electrochemical Society. Vol. 158 (2). pp. B79-B83.
© The Electrochemical Society, Inc. 2010. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in Journal of the Electrochemical Society
Publisher URL: http://scitation.aip.org/JES/