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MAOLIN ZHANG1,* , TONGTONG XUE1, ZHIMIN LI1, YANGXI YAN1, ZI YANG1, YUNXIA HUANG1, JINBIAO PANG2
Barium titanate (BaTiO3) is a typical positive temperature coefficient (PTC) ceramic which is closely associated with the state of grain boundary. In this work, Ba0.99Y0.01TiO3 powder was obtained by the solid-state reaction method and then trace amounts of Mn (0.09~0.19%) were added to promote the direct interaction with grain boundariesboundaries. The effects of trace Mn on crystal structure, microstructure, binding energy and PTC characteristics were investigated. It was found that excellent room-temperature resistivity, resistance jump ratio and Curie temperature of 136 Ω. cm, 105 and 145 °C, respectively, could be obtained for the 0.11% Mn-doped ceramics, possibly due to the grain boundary barrier induced by Mn..
Barium titanate, PTC ceramic, Grain boundary, Trace Mn.
MAOLIN ZHANG, TONGTONG XUE, ZHIMIN LI, YANGXI YAN, ZI YANG, YUNXIA HUANG, JINBIAO PANG, Effects of adding trace amounts of Mn on grain boundaries in improving the PTC properties of Ba0.99Y0.01TiO3 ceramics, Optoelectronics and Advanced Materials - Rapid Communications, 11, 5-6, May-June 2017, pp.385-389 (2017).
Submitted at: Oct. 5, 2016
Accepted at: June 7, 2017
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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