X-ray powder diffraction features of manganites DyMI3MII3Mn4O12 (MI = Li, Na, K; MII = Mg, Ba)

Bulat Kunurovich Kasenov, Е. С. Мустафин, M. A. Akubaeva, S. T. Edil’baeva, Zhenisgul Imangalievna Sagintaeva, С. Ж. Давренбеков

2010

Data confidence 70 medium

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Abstract

Manganites DyM 3 I Mg3Mn4O12 and DyM 3 I Ba3Mn4O12 (MI = Li, Na, K) were synthesized by the solid-state reaction of dysprosium and manganese(III) oxides and magnesium and corresponding alkali metal carbonates. The X-ray powder diffraction studies showed that the crystals are orthozhombic with the following unit cell parameters and densities: DyLi3Mg3Mn4O12—a = 10.88 Å, b = 10.73 Å, c = 19.63 Å, V 0 = 1656.2 Å3, Z = 8, ρcalc = 5.36 g/cm3, ρpycn = 5.11 ± 0.05 g/cm3; DyNaMg3Mn4O12—a = 10.55 Å, b = 10.72 Å, c = 18.28 Å, V 0 = 2067.4 Å3, Z = 8, ρcalc = 4.60 g/cm3, ρpycn = 4.88 ± 0.09 g/cm3; DyK3Mg3Mn4O12—a = 10.56 Å, b = 10.72 Å, c = 20.89 Å, V 0 = 2206.0 Å3, Z = 8, ρcalc = 4.60 g/cm3, ρpycn = 4.92 ± 0.06 g/cm3; DyLi3Ba3Mn4O12—a = 10.53 Å, b = 10.69 Å, c = 21.28 Å, V 0 = 2395.4 Å3, Z = 8, ρcalc = 5.58 g/cm3, ρpycn = 5.98 ± 0.12 g/cm3; DyNa3Ba3Mn4O12—a = 10.53 Å, b = 10.74 Å, c = 23.00 Å, V 0 = 2602.3 Å3, Z = 8, ρcalc = 5.39 g/cm3, ρpycn = 5.30 ± 0.07 g/cm3; DyK3Ba3Mn4O12—a = 10.52 Å, b = 10.75 Å, c = 25.69 Å, V 0 = 2905.2 Å3, Z = 8, ρcalc = 5.04 g/cm3, ρpycn = 5.00 ± 0.18 g/cm3.