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A study on the alexandrite-like cubic zirconia single crystal by skull melting method  

석정원 (동신대학교 보석공학과)
최종건 (동신대학교 보석공학과)
Abstract
Alexandrite-like cubic zirconia single crystals were grown by skull melting method. The R.F. generator (output power is 35 ㎾) used for skull melting was operated at 2 MHz. The grown crystals were doped with up to 1 or 1.5 wt% and 0.5 or 1 wt% of rare earth metal ion (Pr, Nd) on$ ZrO_2-Y_2O_3$ (12 mol%). The grown crystals were cut for slice (0.25 mm) and round brilliant (12 mm in diameter). The cut stones were heat treated in air and nitrogen at $1000^{\circ}C$ for 2 hours and their optical absorption spectra ($\lambda$ = 400∼700 nm) data were obtained.
Keywords
Alexandrite-like cubic zirconia; Change of color; Skull melting method;
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