Pigments based on LiSbO3 and LiNbO3 related structures
The present invention involves pigments derived from compounds with the LiSbO 3 -type or LiNbO 3 -type structures. These compounds possess the following formulations M 1 M 5 Z 3 , M 1 M 2 M 4 M 5 Z 6 , M 1 M 3 2 M 5 Z 6 , M 1 M 2 M 3 M 6 Z 6 , M 1 2 M 4 M 6 Z 6 , M 1 M 5 M 6 Z 6 , or a combination thereof. The cation M 1 represents an element with a valence of +1 or a mixture thereof, the cation M 2 represents an element with a valence of +2 or a mixture thereof, the cation M 3 represents an element with a valence of +3 or a mixture thereof, the cation M 4 represents an element with a valence of +4 or a mixture thereof, the cation M 5 represents an element with a valence of +5 or a mixture thereof, and the cation M 6 represents an element with a valence of +6 or a mixture thereof. The cation M is selected from H, Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Ru, Co, Ni, Cu, Ag, Zn, B, Al, Ga, In, Si, Ge, Sn, P, Sb, or Te. The anion Z is selected from N, O, S, Se, Cl, F, hydroxide ion or a mixture thereof. Along with the elements mentioned above vacancies may also reside on the M or Z sites of the above formulations such that the structural type is retained. The above formula may also include M dopant additions below 20 atomic %, where the dopant is selected from H, Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Ru, Co, Ni, Cu, Ag, Zn, B, Al, Ga, In, Si, Ge, Sn, P, Sb, Bi, Te, or mixtures thereof.
1. A pigment comprising a compound with a LiSbO 3 -type structure, where the chemical formula is (LiSb) 1.2 (CoTi) 0.8 O 6 and comprising an optional dopant.
2. The pigment of claim 1 where the dopant is selected from Mg, Ca, Sr, Ba, Y, La, Ce, Pr, Nd, Ti, Zr, Hf, Cr, Mo, W, Mn, Fe, Ru, Co, Ni, Cu, Ag, Zn, B, Al, Ga, In, Si, Ge, Sn, P, Sb, Bi, or combinations thereof.
3. The pigment of claim 1 where the dopant is selected from Al, Cr, Mn, Fe, Co, Ni, Cu, Si, Sn, Ti, Zr, P, Bi, or mixtures thereof.
4. The pigment of claim 1 with no dopant present.