Dielectric properties of 0.6Pb(Sc1/2Ta1/2)O3-0.4PbTiO3 ceramics prepared by the molten (용융엽 합성법에 의해 제조된 0.6Pb(Sc1/2Ta1/2)O3-0.4PbTiO3 세라믹스의 유전성)

Kyung Bong Park (박경봉); Tae Heui Kim (김태희); 권승협; 임동주

Dielectric properties of 0.6Pb(Sc1/2Ta1/2)O3-0.4PbTiO3 ceramics prepared by the molten

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2007, 17(2), pp.69~74
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

Kyung Bong Park ¹, Tae Heui Kim ¹, 권승협 ¹, 임동주 ²

¹안동대학교
²㈜부광테크

Accredited

ABSTRACT

0.6Pb(Sc1/2Ta1/2)O3-0.4PbTiO3 (hereafter PST) ceramics were prepared by the molten salt synthesis (MS)method using KCl as a flux. Formation of perovskite phase was investigated by a diferential thermal analysis (DTA) andX-ray diffraction (XRD) analysis in the temperature range from 60oC to 850oC. A 92 % perovskite phase was synthesizedat 750oC for 2 hrs using the MS method, while 82 % perovskite phase was synthesized at 850oC for 4 hrs using thecalcining of mixed oxide (CMO) method. This result could be due to the improvement in reactivity of Sc2O3 by melting ofKCl. The MSS specimen sintered at 1,100oC for 4 hrs showed a dielectric constant of 11,200, a remnant polarization of13.5C/cm2 and a coercive field of 10.198 kV/cm, which was discussed in view of the microstructure.Key words Molten salt synthesis, Perovskite, Dielectrics, Relaxor... .... .. ... 0.6Pb(Sc1/2Ta1/2)O3-0.4PbTiO3 ..... ......†

KEYWORDS

Molten salt synthesis, Perovskite, Dielectrics, Relaxor

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