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Color-change for ligand field of cobalt doped yttria stabilized cubic zirconia (YSZ) single crystal

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2007, 17(1), pp.35~40
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

Jeongwon Seok 1,  Jong Geon Choi 1

1동신대학교

Accredited

ABSTRACT

Cobalt (Co2+) doped ytria stabilized cubic zirconia (YSZ, Y2O3 : 25~50 wt%) single crystals grown by a skulmelting method were heat-treated in N2 at 1000oC for 5 hrs. The reddish brown single crystals were changed into eitherφ6.5 × t2 m) and round brilliant (φ10 m). The optical and structural properties were examined by UV-VIS spectrophotometerand XRD. These results are analyzed absorption by Co2+ (4A2(4F) → 4P) and Co3+, change of energy gap and lattice parameter.Key words YSZ, Co2+, Co3+, energy gap, lattice parameterCobalt. ... .... ... ....... (YSZ) .... ....... .......†.. ........ ..... , .. , 520-714(2007. 1. 9. .. )(2007. 1. 29. .... ). . .. (skull).... .. .... ... (Co2+). .. (doping). 25~50 wt%. .. .. Y2O3 ... .. .... ... ....... (YSZ) .... N2 ... 1000oC.. 5.. .. ... ... . .... ..... .

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