No abstract

No abstract

Cerium-containing oxide fluoride glasses CeF_3-BaF_2-AlF_3-SiO_2 were prepared under CO and Ar atmospheres. The glass prepared in CO exhibited blue emission under UV irradiation. Peak analyzes were performed to investigate their optical properties. The emission spectra were separable into three peak components by peak analysis. X-ray photoemission spectroscopy (XPS) spectra were measured to investigate the valency of the elements in the glass. Oxygen and fluorine in the glasses were more covalent and ionic than those in simple oxide and fluoride compounds. The cerium ion in the glass prepared in CO might be under a cationic condition whereas that in Ar might be under an anionic condition

No abstract

No abstract