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Title: Pb(Fe2/3W1/3)O3 by mechanical activation of coprecipitated Pb3Fe2O6 and WO3
Authors: Khim, A.S.
Junmin, X. 
Wang, J. 
Keywords: Dielectric properties
Mechanical activation
Relaxor ferroelectric
Issue Date: 16-Sep-2002
Citation: Khim, A.S., Junmin, X., Wang, J. (2002-09-16). Pb(Fe2/3W1/3)O3 by mechanical activation of coprecipitated Pb3Fe2O6 and WO3. Journal of Alloys and Compounds 343 (1-2) : 156-163. ScholarBank@NUS Repository.
Abstract: Single phase Pb(Fe2/3W1/3)O3 (PFW) of perovskite structure was synthesized by mechanically activating a mixture of coprecipitated Pb3Fe2O6 and WO3 at room temperature for 5 h. Five hours of mechanical activation led to PFW particles of 20-30 nm in size with a rounded particle morphology. The perovskite PFW phase derived from mechanical activation is stable against rising temperature and remains as the main crystalline phase up to the sintering temperature of 870 °C. The sintered density of PFW thus derived increases with increasing activation time and sintering temperature. A maximum sintered density of 98.5% theoretical density is obtained when the activation-derived PFW powder is sintered at 870 °C. It exhibits a maximum dielectric permittivity of ∼9000 and a Curie temperature of -97 °C when measured at 10 kHz. © 2002 Elsevier Science B.V. All rights reserved.
Source Title: Journal of Alloys and Compounds
ISSN: 09258388
DOI: 10.1016/S0925-8388(02)00204-9
Appears in Collections:Staff Publications

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