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Figure 9
Raman spectroscopy on NSAT wafer and IR spectroscopy results on NSAT powder samples. In band assignments El, R and IR represent ellipsometry, Raman and IR spectroscopy as the method used to identify the vibrational mode. An unexpected mode at 991 cm−1 can be observed. A Raman spectrum of an LSAT wafer is also added for comparison. Due to the weak signal of Ge-ATR its signal has been enhanced six times. A Gaussian background has been subtracted from the transmission IR spectrum due to enormous scattering effects believed to be Mie scattering of micron scaled NSAT particles and air bubbles dispersed in KBr. The inset shows a magnified weak peak to highlight its presence in the Ge-ATR measurement.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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