Effect of doping Mn ion on the crystal structure and cation distribution in Co1-xMnxFe2O4 compounds

IF 3.4 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
T. A. Tran, H. C. Tran, N. T. Nghiem, L. V. Truong-Son, G. T. Imanova, S. H. Jabarov
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引用次数: 0

Abstract

In this study, we investigated the effect of Mn doping on the crystal structure and the distribution of cations at tetrahedral and octahedral sites in Co1-xMnxFe2O4 compounds (0 ≤ x ≤ 0.4), synthesized utilizing a solid phase reaction method, utilizing X-ray diffraction (XRD) and Raman spectroscopy measurements. The surface morphology and chemical composition of the compounds were studied using scanning electron microscope and X-ray energy dispersive spectroscopy. The Rietveld refinement of XRD data using the Fullprof package demonstrate that all studied samples are single phase spinels with no other detectable phases and have a cubic structure with the space group of Fd-3 m. The lattice constant and unit-cell volume increased with increased Mn doping concentration, which are attributed to the larger ionic radius of Mn in comparison with Co. Both the X-ray diffraction and Raman spectroscopy results demonstrated that doping Mn at the Co-site leads to the movement of Fe cations from the tetrahedral sites to the octahedral ones.

掺杂Mn离子对Co1-xMnxFe2O4化合物晶体结构和阳离子分布的影响
在本研究中,我们利用x射线衍射(XRD)和拉曼光谱测量,研究了Mn掺杂对固相法合成的Co1-xMnxFe2O4化合物(0≤x≤0.4)晶体结构和四面体和八面体位置阳离子分布的影响。利用扫描电镜和x射线能谱对化合物的表面形貌和化学成分进行了研究。利用Fullprof包对XRD数据进行Rietveld细化,结果表明所研究的样品均为单相尖晶石,没有其他可检测相,具有Fd-3 m空间群的立方结构。随着Mn掺杂浓度的增加,晶格常数和单元胞体积增加,这是由于Mn的离子半径比Co大。x射线衍射和拉曼光谱结果表明,在Co位掺杂Mn导致Fe阳离子从四面体位向八面体位移动。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
8.60
自引率
0.00%
发文量
1
审稿时长
13 weeks
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