Synthesis and x-ray diffraction study of new nanostructured manganite ferrites NdM 1.5 II MnFeO6 (MII = Mg, Ca, Sr, Ba)

Abstract

Manganite ferrites NdM 1.5 II MnFeO6 (MII = Mg, Ca, Sr, Ba) were synthesized from neodymium(III), manganese(III), and iron(III) oxides and alkaline-earth metal carbonates by a ceramic technology. By grinding the obtained compounds in a ball mill, their nanostructured particles were produced, the sizes of which were determined with an electron microscope. X-ray diffraction study established that the nanostructured compounds crystallize in the cubic and tetragonal systems with the following lattice parameters: NdMg1.5MnFeO6 (tetragonal): a = 10.955 Å, c = 17.848 Å, V 0 = 2141.975 Å3, Z = 16, V e1.cel1 0 = 133.873 Å3, ρX-ray = 4.80 g/cm3, and ρpycn = 4.76 ± 0.05 g/cm3; NdCa1.5MnFeO6 (cubic): a= 10.809 Å, V 0 = 1262.864 Å3, Z = 8, V e1.cel1 0 = 157.858 Å3, ρX-ray = 4.32 g/cm3, and ρpycn = 4.27 ± 0.03 g/cm3; NdSr1.5MnFeO6 (cubic): a = 10.911 Å, V 0 = 1298.953 Å3, Z = 8, V e1.cel1 0 = 162.369 Å3, ρX-ray = 4.93 g/cm3, and ρpycn= 4.88 ± 0.05 g/cm3; and NdBa1.5MnFeO6 (tetragonal): a = 11.011 Å, c = 18.001 Å, V 0 = 2182.479 Å3, Z = 16, V e1.cel1 0 = 136.405 Å3, ρX-ray = 6.78 g/cm3, and ρpycn= 6.75 ± 0.07 g/cm3.