초록 ▼

A transparent class ceramic composition includes an oxide component, a rare earth component, a halide component, and a substantially pure rare earth-halide (e.g., REF.sub.3) crystal component. A method for making a transparent oxyfluoride glass includes preparing an oxyfluoride glass containing rare

A transparent class ceramic composition includes an oxide component, a rare earth component, a halide component, and a substantially pure rare earth-halide (e.g., REF.sub.3) crystal component. A method for making a transparent oxyfluoride glass includes preparing an oxyfluoride glass containing rare earth ions by a conventional melting method and subjecting the glass to a heat treatment thereby precipitating fluoride fine crystals containing a large amount of rare earth ions.

대표청구항

[ I claim:] [1.] A transparent oxyfluoride glass-ceramic composition including an amorphous component and a crystal component, comprising:an oxide component;a rare earth component;a halide component; anda substantially pure rare earth-halide crystal component in the form REF.sub.3.

[ I claim:] [1.] A transparent oxyfluoride glass-ceramic composition including an amorphous component and a crystal component, comprising:an oxide component;a rare earth component;a halide component; anda substantially pure rare earth-halide crystal component in the form REF.sub.3.