EFFECTS OF BaTiO3 TEMPLATE ON THE MICROSTRUCTURE AND PROPERTIES OF TEXTURED Pb (Mg1/3Nb2/3) O3-32.5PbTiO3 CERAMICS

摘要：

　　BaTiO3 (BT) template with (100) orientations (f ≈ 98%) was synthesized by molten salt and topological chemical microcrystal conversion method.The templated grain growth technique was then used to prepare highly textured 0.675Pb(Mg1/3Nb2/3)O3-0.325PbTiO3 (PMN-PT) ceramics.The effects of BaTiO3 templates on the microstructure and properties of textured ceramics have been investigated.It is found that BT template is beneficial to the (100) texture and also the properties of PMN-PT ceramics.The Lotgering factors, which describe the texture of PMN-PT ceramics, increase with the additions of BaTiO3 template.Highly oriented PMN-PT ceramic with Lotgering factor f up to 66% was obtained at 6 wt% BT template content.The hysteresis loops show the coercive electric field is nearly independent on the template concentration.The piezoelectric properties of PMN-PT ceramics are closely relative to their textures.A large strain of 0.35% under 50kV/cm electric-field intensity is observed for the ceramic with Lotgering factor f of 66%, which is 1.54 times as that of the random-orientated ceramic in the same field.The corresponding low-field coefficients d*33 is up to 1046 pm/V (E< 10 kV/cm), which is 2.3 times as that of the sample with random crystal orientations.

关键词： Textured ceramics BaTiO3 template PMN-PT Piezoelectric properties

作者: Yun SHENG Ying YANG Que-rui HU Jian-ye WANG Sheng SUN Yi-ping WANG

作者单位: State Key Laboratory of Mechanics and Control of Mechanical Structure, Nanjing University of Aeronau State Key Laboratory of Mechanics and Control of Mechanical Structure, Nanjing University of Aeronau

会议类型: 国际会议

会议名称: The 2017 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2017全国压电和声波理论及器件技术研讨会)

会议地点: 成都

会议语种:英文

页码: 169-173

在线出版日期: 2017-10-27（万方平台首次上网日期，不代表论文的发表时间）