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Please use this identifier to cite or link to this item: http://dspace.unimap.edu.my:80/xmlui/handle/123456789/9062

Title: La-Doped CaCu3Ti4O12 ceramics synthesized under argon environment
Authors: N. Shafiza, Afzan
S. D., Hutagalung
Zainal A., Ahmad
???metadata.dc.contributor.url???: mrsabar@eng.usm.my
Keywords: CaCu3Ti4O12 (CCTO);La-doped;Argon environment;X-ray Diffraction (XRD;Microelectronics;International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI)
Issue Date: 9-Jun-2010
Publisher: Universiti Malaysia Perlis
???metadata.dc.publisher.department???: School of Materials Engineering & School of Environmental Engineering
Citation: p.174-178
Series/Report no.: Proceedings of the International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI) 2010
Abstract: The properties of undoped and La-doped CaCu3Ti4O12 (CCTO) ceramics synthesized via solid state reaction under argon environment had been studied. La-doped CCTOs found to have higher dielectric constant than undoped CCTO. X-ray Diffraction (XRD) analysis indicated that all of the samples have single-phase cubic structure (space group) with no trace of other impurity phases. However, compared with undoped CCTO, minor shifts are observed in the peak positions for La-doped specimens, which are attributed to the lattice expansion caused by ionic size effects (as La3+ is bigger than Ca2+). The lattice parameter estimated from XRD patterns of undoped CCTO were found to be 7.348 Å and the increases in lattice parameter of La-doped CCTO from 7.348 – 7.377 Å, suggesting that La ions have effectively substituted into the Ca site of CCTO
Description: International Conference on X-Rays and Related Techniques in Research and Industry (ICXRI 2010) jointly organized by Universiti Malaysia Perlis (UniMAP) and X-Ray Application Malaysia Society (XAPP), 9th - 10th June 2010 at Aseania Resort Langkawi, Malaysia.
URI: http://hdl.handle.net/123456789/9062
ISBN: 978-967-5760-02-0
Appears in Collections:Conference Papers

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