| abstract |
Luminescent substance of the general formula XZO 4 in which X for Sc a Y b La c Pr e Nd f Sm g D y l Ho m Er n Yb p Lu q Sb (III) r Cr t Mn (III) u Fe (III) v [Ba w Mn (II) x Fe (II) y Ca z Sn (II) α Sr β Co γ Ni δ Cu ε ] 3/2 [K λ ] 3 [U (IV) μ Pb π ] 3/4 U (VI) φ / 2 and Z for Nb za Ta zb [Ti ze Zr zf Sn (IV) zg ] 5/4 stands and a + b + c + e + f + G + l + m + n + p + q + r + t + u + v + 3.2 ( w + x + y + z + α + β + γ + ε ) + 3 λ + 3.4 ( μ + π ) + φ / 2 = 1 and a, b, c, e, f, g, l, m, n, p, q, r, t, u, v, w, x, y, z, α, β, γ, δ, ε, λ, μ, π and φ each range from 0 to 1 and za + eg + 4.5 ( ze + zf + zg ) = 1 and za, zb, ze, zf and zg each range from 0 to 1, where if p ≠ 0, at the same time e ≠ 0 and / or f ≠ 0 and / or l ≠ 0 and / or t ≠ 0 and / or u ≠ 0 and / or v ≠ 0 and / or x ≠ 0 and / or y ≠ 0 and / or γ ≠ 0 and / or δ ≠ 0 and / or ε ≠ 0; and wherein if f ≠ 0, simultaneously e ≠ 0 and / or l ≠ 0 and / or t ≠ 0 and / or u ≠ 0 and / or v ≠ 0 and / or x ≠ 0 and / or y ≠ 0 and / or γ ≠ 0 and / or δ ≠ 0 and / or ε ≠ 0 applies; or where (n ≠ 0 and p ≠ 0) or (f ≠ 0 and p ≠ 0) or (n ≠ 0 and f ≠ 0). |