Trace Analysis of Dysprosium-doped BaTiO3 by ICP-AES using Bomb Acid Digestion Method = Trace Analysis of Dysprosium-doped BaTiO3 by ICP-AES using Bomb Acid Digestion Method

다국어 초록 (Multilingual Abstract)

The bomb acid digestion method was used in this study to improve the decomposition efficiency of pure BaTiO3 and Dy-doped BaTiO3. A trace analysis was carried out using inductively coupled plasma atomic emission spectrometry (ICP-AES). The decomposition rate of pure BaTiO3 was obtained at 130 ℃ and above 2 h, and the change of the efficiency according to digestion temperature was identified by the structural stability of BaTiO3 related to a phase transition at around Tc. With pure BaTiO3, optimization of the temperature and conditions increased the analysis efficiency. The bomb acid digestion method was applied to the mixture and compound of Dy-doped BaTiO3 in the same way as with pure BaTiO3. Thedecomposition and recovery rate decreased for the Dy-doped BaTiO3 compound. To clarify this phenomenon, the phase transition of pure and Dy-doped BaTiO3 was characterized through X-ray diffraction (XRD) and differential scanning calorimetry (DSC). It was revealed that the decomposition efficiency was considerably associated with the Curie temperature of Dy-doped BaTiO3. (Received August 27, 2013)