Synthesis and spectroscopic properties of aluminum oxynitride doped with 3d-metal ions: The case of γ-AlON:Ti

Synthesis and spectroscopic properties of aluminum oxynitride doped with 3d-metal ions: the case of γ-AlON:Co

“…%). On the one hand, the same phenomenon is observed when γ-AlON is doped with titanium ions [33]. On the other hand, the AlN impurity phase in -AlON:Ti disappears when titanium content reaches the solubility limit but there is still some traces of AlN when cobalt content is 1.0 at.…”

“…The band near 255 nm has been occasionally observed in AlON [43][44][45][46], but its nature is poorly described. It was also found in the absorption spectra of AlON:Ti [33]. In the study [43] the absorption in the 250-300 nm region was attributed to electronic transitions in vacancy defects involving an aluminum vacancy (V Al ) in the AlON structure.…”

“…The samples of AlON:Co were synthesized by high-temperature annealing of cobalt-doped Al 2 O 3 and AlN mixtures at 1750°C for 2 h under N 2 atmosphere. Codoped Al 2 O 3 was prepared by a modified sol-gel method from Al( i PrO) 3 with the addition of Co(OAc) 4 •4H 2 O [33]. The cobalt content was 0.01, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, and 5.0 at.…”

“…Raman spectra were recorded on a Renishaw inVia Reflex Raman microscope with the configuration described in previous paper [33]. A Renishaw Nd:YAG laser operating at 532.1 nm and ~ 3 mW power at the sample was employed as an excitation source.…”

“…Recently, we have discussed the -AlON:Ti ceramics including the dopant solubility limits in the host lattice, phase composition, coordination environment of Ti n+ ions and optical properties [33]. In particular, the solubility limit of titanium in -AlON (Al 5 O 6 N) is found to be ca.…”