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허만규,TAKAKI MASAKI,최병기,이진형,강광충,임철탁,윤대호 한양대학교 세라믹연구소 2016 Journal of Ceramic Processing Research Vol.17 No.3
To improve the electrical properties of multilayer ceramic capacitors, triple (Mg/Dy/Si) oxides coating on the surfaces of 150-nm BaTiO3 (BT) particles was conducted by using the thermal hydrolysis method. Multi-layer (5 layers) ceramic capacitors(MLCCs) of triple oxides coated BT (TOBT) particles were obtained by using green sheet process and their electricalproperties were measured. The MLCCs of TOBT particles gave a better stable dielectric constant and dissipation factor forthe sintering temperature compared with those of the reference specimen prepared by using mixing process. In addition, astable temperature coefficient of capacitance (TCC) was obtained. The morphology and homogeneity of TOBT particles weremeasured by using scanning transmission electron microscope-high angle annular dark field (STEM-HAADF) and energydispersive X-ray spectroscopy (EDX).