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Journal of Nanomaterials
Volume 2013, Article ID 412741, 5 pages
Research Article

Structural and Surface Morphology Studies of La0.67Ba0.33( )O3 Thin Films Prepared by Sol-Gel Method

Department of Electrical, Electronic & Systems, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia

Received 17 October 2012; Revised 18 January 2013; Accepted 28 February 2013

Academic Editor: Jun Liu

Copyright © 2013 H. Abdullah and M. S. Zulfakar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Nanocrystalline thin films of La0.67Ba0.33( )O3 ( , and 0.15) were prepared by sol-gel method, as a starter material consisting of La2O3, BaNO3, Mn(NO3), and Al(NO3). The molarities of La2O3 and BaNO3 are constant, while molarities of Mn(NO3) and Al(NO3) were calculated based on stoichiometric theory. Thin films were deposited on quartz glass substrate by using spin coating technique and sintered at 700°C. X-ray diffractometer (XRD) patterns showed that these thin films consist of pure La0.67Ba0.33( )O3 phase where the most prominent peak is observed at (104). All the samples display a rhombohedral structure. Scanning electron microscopy (SEM) showed that aggregation of small particles occurred more in doped films than in undoped films. The surface morphology has been studied by using AFM, and the roughness of thin films was analyzed.