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Large dielectric response of 0.6PMN-0.4PZN relaxor ferroelectric ceramic for multilayer capacitors
Ferroelectrics Letters Section ( IF 0.4 ) Pub Date : 2019-12-03 , DOI: 10.1080/07315171.2019.1570767
Mamta V. Takarkhede 1 , Sheela A. Band 2
Affiliation  

Abstract 0.6PMN-0.4PZN solid solution ceramic was synthesized employing two stage columbite route using sintering temperature range 1000–1170 °C for calcination temperature 800 °C and 850 °C, respectively. XRD and SEM characterization revealed single perovskite phase formation in ceramic between 1050 °C to 1100 °C. The highest density upto 94% was achieved for the composition under study. The excellent dielectric properties were obtained at lower sintering temperature 1000–1100 °C. Ceramics sintered between 1000 °C–1100 °C exhibit εmax≈14000 and 24000 at 1 kHz with Tc = 51–48 °C which is near room temperature. A good correlation was obtained between dielectric properties with structure, microstructure and density. The TCC values within the limit of Z5U capacitor specification reflect ceramics of composition 0.6PMN-0.4PZN is a potential candidate for MLC.

中文翻译:

用于多层电容器的 0.6PMN-0.4PZN 弛豫铁电陶瓷的大介电响应

摘要 0.6PMN-0.4PZN固溶体陶瓷采用两段铌石路线合成,烧结温度范围为1000-1170°C,煅烧温度分别为800°C和850°C。XRD 和 SEM 表征表明,在 1050°C 至 1100°C 之间,陶瓷中形成了单一钙钛矿相。所研究的组合物达到了高达 94% 的最高密度。在较低的烧结温度 1000-1100 °C 下获得了优异的介电性能。在 1000 °C–1100 °C 之间烧结的陶瓷在 1 kHz 下表现出 εmax≈14000 和 24000,Tc = 51–48 °C,接近室温。在介电性能与结构、微观结构和密度之间获得了良好的相关性。Z5U 电容器规格限制内的 TCC 值反映了组成为 0.6PMN-0 的陶瓷。
更新日期:2019-12-03
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