New nanostructured manganites of LaMeIICuZnMnO6(MeII- Mg, Ca, Sr, Ba)


Kasenova Sh.B. Sagintaeva Zh.I. Kasenov B.K. Turtubaeva M.O. Nukhuly A. Kuanyshbekov Ye.Ye. Isabaeva M.A.
2021E.A.Buketov Karaganda State University Publish House

Bulletin of the Karaganda University Chemistry Series
2021#103Issue 360 - 66 pp.

The copper-zinc manganites of LaMeIICuZnMnO6 (MeII - Mg, Ca, Sr, Ba) have been synthesized with the high-temperature interaction of alkaline earth metals carbonates with oxides of lanthanum (III), copper (II), zinc (II) and manganese (III). The synthesized polycrystalline copper-zinc manganites have been grinded on the Retsch vibration mill MM301 (Germany). As a result their nanostructured particles have been obtained. Their sizes have been determined using an electron microscope Mira3 LMU, Tescan. Methods of radiography determined that all synthesized nanostructured copper-zinc manganites crystallize in the cubic syngony with the following parameters of a lattice: LaMgCuZnMnO6 - a = 13.53×0.02 Å, Vo = 2476.81×0.06 Å3, Z = 4, Voelect.cell = 619.20×0.02 Å3, ρroent = 4.52; ρpick = 4.50×0.01 g/cm3; LaCaCuZnMnO6 - a = 13.69×0.02 Å, Vo = 2565.73×0.06 Å3, Z = 4, Voelect.cell. = 641.43×0.02 Å3, ρroent = 4.43; ρpick = 4.41×0.01 g/cm3; LaSrCuZnMnO6 - a = 13.91×0.02 Å, Vo = 2691.42×0.06 Å3, Z = 4, Voelect.cell = 672.85×0.02 Å3, ρroent = 4.99; ρpick. = 4.96×0.01 g/cm3; LaBaCuZnMnO6 - a = 14.55×0.02 Å, Vo = 3080.27×0.06 Å3, Z = 4, Voelect.cell = 770.07×0.02 Å3, ρroent = 4.95; ρpick = 4.94×0.01 g/cm3. The X-ray investigations demonstrated that the values of lattice parameters of the studied copper-zinc manganites have been increased from Mg to Ba. As a result of the investigations, these compounds can be included in Pm3m spatial group.

Alkaline-earth metals , Copper-zinc manganite , Electron microscopy radiography , Lanthanum , Nanostructured particles , Synthesis

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Abishev Chemical-Metallurgical Institute, Karaganda, Kazakhstan
Toraigyrov University, Pavlodar, Kazakhstan
Pavlodar Pedagogical University, Kazakhstan

Abishev Chemical-Metallurgical Institute
Toraigyrov University
Pavlodar Pedagogical University

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