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|Title:||Nanocrystalline ferroelectric phases from mechanical activation of oxide compositions||Authors:||Lim, J.
Transmission electron microscopy (TEM)
|Issue Date:||18-May-2001||Citation:||Lim, J., Junmin, X., Wang, J. (2001-05-18). Nanocrystalline ferroelectric phases from mechanical activation of oxide compositions. Scripta Materialia 44 (8-9) : 1803-1806. ScholarBank@NUS Repository. https://doi.org/10.1016/S1359-6462(01)00742-4||Abstract:||Successful synthesis of nanocrystalline perovskite lead scandium tantalate, PbSc0.5Ta0.5O3, was achieved via a novel one-step mechanical activation route. The as-formed PST exhibits a disordered structure and nanocrystalline domains of ∼8nm. Sintered ceramics made from these powders retain long-range disordered perovskite structure up to 1200°C and a dielectric constant of ∼23,000 is obtained. Sintering above this temperature results in the formation of undesirable pyrochlore phases that degrades dielectric properties. © 2001 Acta Materialia Inc. Published by Elsevier Science Ltd.||Source Title:||Scripta Materialia||URI:||http://scholarbank.nus.edu.sg/handle/10635/107136||ISSN:||13596462||DOI:||10.1016/S1359-6462(01)00742-4|
|Appears in Collections:||Staff Publications|
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