Journal
SCRIPTA MATERIALIA
Volume 61, Issue 7, Pages 764-767Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2009.06.027
Keywords
6H-hexagonal structure; Tunability; Microwave dielectric properties
Categories
Funding
- Ministry of Sciences and Technology of China [2009CB623302]
- Cultivation Fund of the Key Scientific and Technical Innovation Project
- Ministry of Education of China [707024]
- Shanghai Committee of Science and Technology [07DZ22302]
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Ba0.4Sr0.6Ti1-yMnyO3 ceramics showed a bimodal composition of Ba1-xSrxTiO3 and 6H-hexagonal BaTiO3. The Curie peaks of samples are markedly suppressed, broadened and shifted to low temperature with increasing Mn content, and the tunability (T) is decreased. Q values of all samples are above 550. The sample with y = 0.10 exhibits good dielectric properties, with epsilon' of 449, Q of 580 (at 1.906 GHz) and T of 3.1%, which make it a potential candidate for the fabrication of tunable microwave devices in wireless communication applications. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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