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https://doi.org/10.1080/10584580490460358
Title: | Post-sinter annealing of Pb0.7La0.2TiO3 derived from mechanical activation | Authors: | Soon, H.P. Xue, J.M. Wang, J. |
Keywords: | Dielectric behaviors Lanthanum-doped lead titanate Oxygen vacancies Pb0.7La0.2TiO 3 Post-sinter annealing 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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