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|Title:||Post-sinter annealing of Pb0.7La0.2TiO3 derived from mechanical activation||Authors:||Soon, H.P.
Lanthanum-doped lead titanate
Space charge polarization
|Issue Date:||2004||Citation:||Soon, H.P., Xue, J.M., Wang, J. (2004). Post-sinter annealing of Pb0.7La0.2TiO3 derived from mechanical activation. Integrated Ferroelectrics 62 : 35-41. ScholarBank@NUS Repository. https://doi.org/10.1080/10584580490460358||Abstract:||To investigate the relationships between the dielectric behaviors and defect structures in Pb0.7La0.2TiO3, such as A-site vacancies and oxygen vacancies, post-sinter annealing in oxygen and nitrogen were conducted. Upon initial annealing in oxygen, space charge polarization, manifesting with A-site vacancies created by PbO evaporation from the surface region, dominates the dielectric properties of Pb 0.7La0.2TiO3. Prolonged annealing in oxygen, for example, for more than 4 hours, led to a steady fall in both dielectric constant and dielectric loss. Annealing in nitrogen resulted in a similar rise in the dielectric properties at the initial stage, followed by a slow down in the increase rate at extended duration of annealing, when the perovskite structure is destabilized in combination with the interactions between oxygen vacancies and A-sitc vacancies.||Source Title:||Integrated Ferroelectrics||URI:||http://scholarbank.nus.edu.sg/handle/10635/107175||ISSN:||10584587||DOI:||10.1080/10584580490460358|
|Appears in Collections:||Staff Publications|
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