SYNTHESIS OF NEW NANOSIZED (NANOCLUSTER) COBALT (NICKELITE)-CUPRATE-MANGANITES
Keywords:
synthesis, cobalt-cuprate-manganite, nickelite-cuprate-manganite, lanthanum, alkali, alkaline earth metals, X-ray, nanoscale, nanoclusters, рентгенография, наноразмеры, нанокластерыAbstract
Synthesis of cobalt (nickelite)-cuprate-manganites of the composition LaMgCoCuMnO6 and LaMgNiCuMnO6 were carried out by solid-phase interaction of stoichiometric amounts of La2O3 ( extra-pure grade), NiO, CoO, CuO, Mn2O3 and MgCO3 (analytical grade) in the interval 800-1200 °C for 20 hours. To obtain equilibrium phases at low temperatures, low-temperature annealing was carried out at 400 ° C for 10 hours. On a vibrating mill of “Retsch” company (Germany) of the "MM301" brand, polycrystalline samples of new compounds were ground to nanoscale (nanoclusters) particles. The dimensions of the nanoclusters are determined using the “JSPM-5400” Scanning Probe Microscope "JEOL" electron microscope. X-ray phase analysis of new nanosamples were carried out on a DRON-2.0 unit. The analytical method of X-ray indications is established that the synthesized compounds are crystallize in cubic syngony with the following lattice parameters: LaMgCoCuMnO6 − а=14,12±0,02Å; Vo=2814,87±0,06Å3; Z=4; Voel.cell=703,72±0,02Å3; X-ray=4,19g/cm3; LaMgNiCuMnO6 − а=14,38±0,02Å; Vo=2973,56±0,06Å3; Z=4; Voel.cell =743,39±0,02Å3; X-ray=4,22g/cm3.
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