Rare earth-doped, stabilized cadmium halide glasses

Details Rare earth-doped, stabilized cadmium halide glasses Rare earth-doped, stabilized cadmium halide glasses

1993-07-06

1994-09-13

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501904, 501151, 501152, C03C 332, C03C 410

Patent

active

053468651

ABSTRACT:
This invention is directed to the production of transparent glasses exhibiting transmission far into the infrared regime of the radiation spectrum. The glasses consist essentially, in mole percent, of 42-55% CdF.sub.2 and/or CdCl.sub.2, 30-40% NaF and/or NaCl, 2-20% total of BaF.sub.2 and/or BaCl.sub.2 +KF and/or KCl, consisting of 0-15% BaF.sub.2 and/or BaCl.sub.2 and 0-7% KF and/or KCl, 1-12% total of at least one stabilizing metal halide selected from the group LiX, BeX.sub.2, MgX.sub.2, MnX.sub.2, PbX.sub.2, TlX, COX.sub.2, and ZnX.sub.2, and 0,005-0.5% REX.sub.3, wherein Re is at least one rare earth metal selected from the lanthanide series of rare earth metals and X is at least one halide selected from the group consisting of fluoride, chloride, and bromide. The preferred glasses contain at least 2% each of BaF.sub.2 and/or BaCl.sub.2 and KF and/or KCl.

REFERENCES:
patent: 5240885 (1993-08-01), Aitken et al.

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