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Synthesis and X-ray diffraction study of LaM 1.5 II MnFeO6 manganitoferrites (MII = Mg,Ca, Sr,Ba)
Authors:B K Kasenov  Sh B Kasenova  Zh I Sagintaeva  A Zh Abil’daeva
Institution:1. Abishev Chemicometallurgical Institute, ul. Ermekova 63, Karaganda, 100009, Kazakhstan
2. National Center for Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan, ul. Zhandosova 67, Karaganda, 050036, Kazakhstan
Abstract:LaM 1.5 II MnFeO6 manganitoferrites (MII = Mg, Ca, Sr, Ba) have been synthesized by ceramic technology from lanthanum oxide, manganese(III) oxide, iron(III) oxide, and alkali-earth carbonates. X-ray powder diffraction shows that these compounds crystallize in cubic crystal system with the following unit cell parameters: for LaMg1.5MnFeO6: a = 20.232 ± 0.032 Å, V 0 = 8281.642 ± 0.096 Å3, Z = 10, ρX = 7.38 g/cm3, ρpycn = 7.29 ± 0.06 g/cm3; for LaCa1.5MnFeO6: a = 20.056 ± 0.017 Å, V 0 = 8067.388 ± 0.051 Å3, Z = 8, ρX = 5.89 g/cm3, ρpycn = 5.78 ± 0.06 g/cm3; for LaSr1.5MnFeO6: a = 20.117 ± 0.021 Å, V 0 = 8141.223 ± 0.063 Å3, Z = 8, V u.c. 0 = 1017.653 ± 0.008 Å3, ρX = 6.64 g/cm3, ρpycn = 6.56 Å 0.08 g/cm3; for LaBa1.5MnFeO6: a = 20.361 ± 0.025 Å, V 0 = 8441.066 ± 0.075 Å3, Z = 8, ρX = 7.31 g/cm3, ρpycn = 7.25 ± 0.07 g/cm3.
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