Nd,
Cr, Ce: YAG Nano powders were made using sol gel co precipitation and
commercial mixing procedures. Temperatures ranging from 900 to 1100°C were used
to calcine both powders. The crystals were then vacuum sintered at temperatures
ranging from 1700 to 1750°C for 8 to 20 hours. The impact of calcinations and
sintering on the Nanostructure was investigated using SEM, EDAX, TEM, and
TGA-DSC. UV spectroscopy was used to investigate the optical characteristics of
crystals. The morphology of the soft powder exhibited a spherical form and
particle size >90 nm, which was also seen in the TEM pictures. The crystal
had a high degree of compactness after sintering, with only one step and very
few and tiny holes. The percent Y/Al=0.6 in the EDX study was close to the
theoretical value, and the XRD sharp peak indicated YAG production. The thermal
behaviour of the crystal was disclosed by the TGA-DSC curve, with a temperature
of formation of roughly 750°C for YAG. The optical property was investigated
using UV spectroscopy. The absorbance maxima at 0.5 wavelength appeared about
300 nm, revealing a band area with several peaks for Nd, Cr, and Ce: YAG.
Author (s) Details
Pilot Plant Department, EL Bohouth St. (former EL Tahrir St.) Doka, Giza, Egypt.
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