Panpailin SeeharajThitirat CharoonsukPatchara PasupongPattaraporn Kim-LohsoontornNaratip VittayakornKing Mongkut's Institute of Technology LadkrabangMahidol University2018-12-112019-03-142018-12-112019-03-142016-01-01International Journal of Applied Ceramic Technology. Vol.13, No.1 (2016), 200-208174474021546542X2-s2.0-84954374822https://repository.li.mahidol.ac.th/handle/20.500.14594/43302© 2015 The American Ceramic Society. Spherical monodispersed yttrium-doped barium zirconate (BaY0.1Zr0.9O3; BYZ) particles were successfully prepared in single step without the requirement of calcination process by the sonochemical method in highly basic aqueous solution. The stoichiometric solution of BaCl2.2H2O, ZrOCl2.8H2O, and YCl4.6H2O was precipitated in a 20 M NaOH under high-intensity ultrasonic irradiation (20 kHz, 150 W/cm2) for 15, 30, and 60 min. As-prepared powders were identified by XRD, FT-IR, and Raman spectroscopy as cubic perovskite BYZ. The microstructure examined by SEM and TEM showed spherical-shaped BYZ particles formed by aggregation of primary nanocrystals, and this unique morphology was induced by the effects of the ultrasonication and the strong alkaline environment. BYZ powders prepared under ultrasonication for 60 min had narrow-sized distribution with the average particle size of 267 ± 26 nm and the specific surface area of 40.2 m2/g. BYZ ceramics sintered in the air at 1550°C for 20 h showed good densification (95%) and consisted of large grain size (7.67 ± 2.79 μm).Mahidol UniversityBusiness, Management and AccountingMaterials ScienceArticleSCOPUS10.1111/ijac.12436