Compositions: ceramic – Ceramic compositions – Synthetic precious stones
Patent
1990-11-19
1992-04-07
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Synthetic precious stones
501 73, 2523014F, C30B 2930
Patent
active
051028344
ABSTRACT:
Vanadium garnet materials and a method for their preparation. The vanadium garnet material has a trivalent vanadium cation and a composition that falls within a specific prismatic-shaped volume in a quaternary composition diagram of MnO, CaO, V.sub.2 O.sub.3, and SiO.sub.2. The prismatic-shaped volume represents compositions of liquids with which said vanadium garnet is in equilibrium on the liquidus surface and from which the vanadium garnet phase is crystallized. A typical vanadium garnet material has the formula Mn.sub.1.3 Ca.sub.1.7 V.sub.2 Si.sub.3 O.sub.12, as provided in the drawing by point F. The vanadium garnet materials may be used in laser applications.
REFERENCES:
patent: 3360675 (1967-12-01), Mikus et al.
patent: 3396119 (1968-08-01), Maiman et al.
patent: 4980320 (1990-12-01), Najjar et al.
Muan Arnulf
Najjar Mitri S.
Brent Albert
Dixon Jr. William R.
Kulason Robert A.
O'Loughlin James J.
Schull Lisa M.
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