Abstract
The crystal structure and luminescent properties of Al-substituted [Formula: see text] were studied. It was found that under normal conditions, the samples are characterized by the space group P63/mmc. Depending on the ionic radii of the Al and Fe atoms and the concentration of Al atoms, a decrease in the distance between the atoms in the crystal structure and the lattice parameters was observed. [Formula: see text] crystals ([Formula: see text] = 0.1–1.2) were excited by a laser with a wavelength of 375 nm and 435 nm, to study their luminescent features. From the information obtained from luminescent spectrum, it is seen that with the replacement of magnetic [Formula: see text] ions by diamagnetic [Formula: see text] ions, the intensity of the spectra increases. During exciting by a laser with a wavelength of 435 nm, anti-Stokes luminescence is observed in the ultraviolet region.
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