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US 2015/0014585 A1Published application
Na3WO4F and Derivatives Thereof as a Scintillation Material and Their Methods of Making
AssigneeUniversity of South Carolina
InventorThomas Vogt
Life of this patent
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Abstract
Direct synthesis methods are generally provided that include reacting Na2(WO4).2H2O (and/or Na2(GeO4).2H2O) with NaF in an inert atmosphere at a reaction temperature of about 950° C. to about 1400° C., along with the resulting structures and compositions.
Claims20
A direct synthesis method, comprising:
- reacting Na2(WO4).2H2O with NaF in an inert atmosphere at a reaction temperature of about 950° C. to about 1400° C.
A crystal structure comprising:
- Na3(WO4)F with impurities present in a concentration of less than about 500 ppb.
A composition of matter having the formula:
- Na+3-a-2b-3cA+aB2+bC3+cW1-xMxO4F
- where
- 0≦a≦2;
- A+ is an alkali metal ion;
- 0≦b≦1;
- B2+ is an alkali earth metal ion, a rare earth cation from the atomic numbers 57-71, an activator cation, or any combinations thereof;
- 0≦c≦1;
- C3+ is an alkali earth metal ion, a rare earth cation from the atomic numbers 57-71, an activator cation, or any combinations thereof;
- 0≦x≦0.2:
- and
- M is B, Al, Si, P, S, Cr, V, Nb, Ta, Zr, Hf, Sc, Y, La, Ga, Ge, In, Mo, or combinations thereof.
8 more elements
A crystal structure comprising:
- Na3(GeO4)F with impurities present in a concentration of less than about 500 ppb.
Dependencies are inferred from the claim text.