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Investigation of Co- and Pr-doped yttria-stabilized cubic zirconia (YSZ) single crystal grown by skull melting method

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2014, 24(4), pp.140~144
  • DOI : 10.6111/JKCGCT.2014.24.4.140
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

뮨소이 1,  Jeongwon Seok 1

1동신대학교

Accredited

ABSTRACT

Co-(0.7 wt%) and Pr-(2.0, 3.5 or 5.0 wt%) doped cubic zirconia (ZrO2 : Y2O3 = 50 : 50 wt%) single crystalsgrown by a skull melting method were heat-treated in N2 at 1150oC for 5 hrs. The brown colored as-grown single crystalswere changed into either dark brownish green, greenish blue and light green color after the heat treatment. Before and afterthe heat treatment, the YSZ (yttria-stabilized zirconia) single crystals were cut for wafer form (ø7.5 mm × t3 mm). The opticaland structural properties were examined by UV-VIS spectrophotometer and X-ray diffraction. Absorption by Co2+(≒589 nm:Γ8[4A2(4F)]→Γ8 +Γ7[4T1(4F)], ≒610 nm: Γ8[4A2(4F)]→Γ8[4T1(4F)], ≒661 nm: Γ8[4A2(4F)]→Γ6[4T1(4F)]) and Pr3+(≒450 nm:3H4 −3P2, ≒473 nm:3H4→3P1, ≒484 nm:3H4→3P0), change of ionization energy and lattice parameter were confirmed.

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