SUBSTANCE FOR SUBSTRATES OF GARNET STRUCTURE Russian patent published in 1995 - IPC

FIELD: growing of single crystals. SUBSTANCE: substance for substrates of garnet structure is characterized by basic formula Ca_xB_yM_zMe_uO_12-p,, where B is element with valency more than 3 from series of niobium and/or tantalum, and/or zirconium; M is element with valency not more than 3 from series of gallium and/or lithium, and/or tantalum, and/or zirconium; Me is element with valency not less than 3 from series of gallium and/or germanium, and/or silicon. Substance contains in terms of formula unit: calcium 2.90-3.10; niobium and/or tantalum 0.05-1.79; gallium 1.80-3.60; germanium 0.02-2.95; lithium 0.01-0.22; zirconium 0.44-0.99; magnesium 0.15-0.32; and oxygen vacancy up to 0.04. EFFECT: increased structural perfection of substrate. 4 cl, 1 tbl