Formation of $Eu^{3+}$ - doped $BaO_2-TiO_2$ Powders Produced by Mechanical Alloying

기계적 합금법에 의한 $BaO_2-TiO_2$ :$Eu^{3+}$ 분말의 합성

  • Kim, Hyun-Goo (Department of Physics Education, Chosun University)
  • 김현구 (조선대학교 사범대학 물리교육과)
  • Received : 2008.08.15
  • Accepted : 2008.09.10
  • Published : 2008.09.30

Abstract

The formation and thermal properties of the $BaO_2$ and $TiO_2$ mixtures were prepared by mechanical alloying method was investigated by X-ray diffractometry (XRD), scanning electron microscopy (SEM), and thermogravimetric/differential thermal analysis (TG/DTA). The rotating speed of 750 rpm shows more effects on the formation of $BaTiO_3$ single phase. The internal strain calculated using Williamson-Hall method was $4.27{\times}10^{-3}$ for the mixture milled for 300 min, the crystallite size was calculated using the Scherrer method decreased with milling time. The $BaTiO_3$ crystal improved crystallinity was formed by thermal annealing at a temperature of $600^{\circ}C$ for 1 h for the mixture milled for 300 min.

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