https://scholars.lib.ntu.edu.tw/handle/123456789/407495
Title: | Phase evolution and dielectric characterization of lead nickel niobate-lead zirconate ceramics prepared from the hydrothermally derived precursors | Authors: | Lu C.-H. Hwang W.-J. |
Issue Date: | 1999 | Journal Volume: | 14 | Journal Issue: | 4 | Start page/Pages: | 1364-1370 | Source: | Journal of Materials Research | Abstract: | The perovskite compounds with the composition of (1 - x) Pb(Ni1/3Nb2/3)O3-xPbZrO3 have been successfully prepared from hydrothermally treated precursors. During calcination, the primary intermediate compound is pyrochlore phase in the Pb(Ni1/3Nb2/3)O3-rich composition, while it is PbZrO3 on the PbZrO3-rich side. On calcination at 800¢XC, all precursors convert into perovskite phases. In the formed solid solutions, increasing PbZrO3 content results in a rise in the apparent Curie temperature as well as the maximum dielectric permittivity. The Pb(Ni1/3Nb2/3)O3-rich perovskites (x < 0.8) possess the characteristics of relaxor ferroelectrics. With increasing PbZrO3 content, the dielectric response gradually becomes less diffuse and dispersive, reflecting a reduction in the relaxor characteristics of the formed perovskites. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407495 | ISSN: | 08842914 | DOI: | 10.1557/JMR.1999.0186 |
Appears in Collections: | 化學工程學系 |
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