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The Measurement of Activator Concentration Using an X-Ray Fluorescence Method for Cr Ions in Al2O3 Crystals as an Example

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ARTICLE DOWNLOAD

The Measurement of Activator Concentration Using an X-Ray Fluorescence Method for Cr Ions in Al2O3 Crystals as an Example

10.00$

V. E. Asadchikov, B. S. Roshchin, V. A. Fedorov, A. D. Nuzhdin & V. A. Shishkov 

Abstract—A method for measuring the concentration of Cr3+ ions is considered in ruby single crystals (Al2O3 : Cr3+) using X-ray fluorescence analysis. The laboratory energy dispersive spectrometer was calibrated using the external standard method for quantitative measurements. In constructing the calibration dependence, we used a series of test samples of ruby crystals in which the concentration of Cr3+ ions was determined from the spectra of the long-wavelength U absorption band of ruby with a maximum in the region of 550 nm. The linear dependence of the X-ray fluorescence intensity on the concentration of chromium ions was obtained, which indicates the absence of matrix effects in the studied range of Cr3+ concentrations (from 0.01 to 0.8 wt %). The possibility of using the method for measuring the concentration of other activators in dielectric ionic crystals is noted.

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Year 2020
Language English
Format PDF
DOI 10.1134/S002044122003001X