A study of crystal structure and particle size of perovskite type La1−xCuxMnO3+δ (x≤0.1) compounds suspended in water

2012 7th International Forum on Strategic Technology (IFOST) Pub Date : 2012-11-26 DOI:10.1109/IFOST.2012.6357545

G. Batdemberel, G. Oyungerel, S. Chadraabal, G. Tsermaa, P. Munkhbaatar

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Abstract

Nanosized La_1-xCu_xMnO₃ (x≤0.1) was synthesized at different temperatures by using heteronuclear complexing method. X-ray diffraction analysis show that sample consists of two phases: La_1-xCu_xMnO₃ (x≤0.1) having R3̅c space group with rhombohedral symmetrical structure and La₂Cu₂O₅ having C2/c space group with monoclinic symmetrical structure. The results show the quantity of La_1-xCu_xMnO₃ increase from 91.22 to 97.62%, while quantity of La₂Cu₂O₅ compound decrease from 8.78 to 2.37% with rising of calcination temperature from 500°C to 900°C. The Photon Cross Correlation Spectroscopy (PCCS) was used to measure size distribution. The results reveal that particle mean diameter increases from (276±4) to (455±5)nm, particle specific surface area (Sv) decreases from 21.84 to 13.29 m²/cm³, particle size distribution equals to 55-761nm and particle surface and volume mean diameter (SMD, VMD) increase from 247 to 459nm.

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钙钛矿型La1−xCuxMnO3+δ (x≤0.1)悬浮物的晶体结构和粒径研究

采用异核络合法在不同温度下合成了纳米La1-xCuxMnO3 (x≤0.1)。x射线衍射分析表明，样品由两相组成:La1-xCuxMnO3 (x≤0.1)具有菱形对称结构的R3 /c空间群和La2Cu2O5具有单斜对称结构的C2/c空间群。结果表明:当煅烧温度从500℃升高到900℃时，La1-xCuxMnO3化合物的含量从91.22%增加到97.62%，La2Cu2O5化合物的含量从8.78%下降到2.37%;光子互关光谱(PCCS)用于测量尺寸分布。结果表明:颗粒平均直径从(276±4)nm增加到(455±5)nm，颗粒比表面积(Sv)从21.84减小到13.29 m2/cm3，粒径分布在55 ~ 761nm之间，颗粒表面和体积平均直径(SMD、VMD)从247增加到459nm。

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2012 7th International Forum on Strategic Technology (IFOST)

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