Lu C.-H.Tsai C.-C.2019-05-132019-05-13199608842914https://scholars.lib.ntu.edu.tw/handle/123456789/407504The formation process of Ba(Mg1/3Ta2/3)O3 was confirmed to be a direct reaction between constituent compounds without the presence of intermediate compounds. Isothermal analysis of reaction kinetics indicated the controlling reaction to be a three-dimensional diffusion process. Based on the Ginstling-Brounshtein model, the activation energy of the formation process was estimated to be 257 kJ/mol. A new definition of the ordering parameter for Ba(Mg1/3Ta2/3)O3 was deduced to quantitatively evaluate the ordering degree. Raising sintering temperatures resulted in an increase in the ordering degree and bulk density of Ba(Mg1/3Ta2/3)O3. Reducing the barium content in Ba(Mg1/3Ta2/3))O3 substantially resulted in improved densification and enhanced ordering structure. On the other hand, an excess barium content in specimens hindered the progress of sintering, and also induced the disordering structure.[SDGs]SDG7journal article10.1557/JMR.1996.01562-s2.0-0030151240https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030151240&doi=10.1557%2fJMR.1996.0156&partnerID=40&md5=0ca18f5a32420fd79eda61f8076f4024