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Advances in Condensed Matter Physics
Volume 2013 (2013), Article ID 373079, 7 pages
Research Article

Phase Relations in (Ln = Nd & Sm) Electroceramics

1Research School of Chemistry, Australian National University, Acton, Australian Capital Territory 0200, Australia
2Centre for Advanced Microscopy, Australian National University, Acton, Australian Capital Territory 0200, Australia
3Mesaplexx Pty. Ltd., 31 Kurilpa Street, West End, Brisbane, Queensland 4101, Australia

Received 31 May 2013; Accepted 28 July 2013

Academic Editor: Danyang Wang

Copyright © 2013 Amanda L. Snashall et al. 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.


A careful, systematic investigation of (BLnTss) ceramics has been performed in order to understand the relationship between composition, microstructure evolution, and microwave dielectric properties. In this paper, we report the effects of composition, morphology, and sintering time on the phase relations and properties of BLnTss (Ln = Nd, Nd/Sm, Sm) ceramics. The microwave dielectric properties of the materials are reported in addition to phase characterisation and structural analysis via X-ray diffraction and field emission scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. BLnTss, , ceramics with high Sm content are found to experience a severe degradation of Qf and changes in trending, associated with the onset of globular and needle-like grain morphology and a Ba-Ti rich phase. ceramics with high Nd content are found to exhibit a secondary phase (Nd2Ti2O7) upon prolonged sintering which resulted in beneficial changes to Qf and without affecting . Two BLnTss ceramics compositions with near-zero were successfully synthesised with high Qf and values.