K. P. Gafarova, V. E. Zhivulin, S. A. Gudkova, G. P. Vyatkin, L. A. Pesin, D. P. Sherstyuk, D. A. Vinnik
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引用次数: 0
摘要
本文研究了锰取代钡六价铁氧体 BaFe12-xMnxO19，其取代度 x 为 0 至 2。样品采用固相合成法制备，温度为 1275 ℃，等温保温 5 小时。样品的元素组成采用能量色散光谱法测定，结果表明与指定的计算成分十分吻合。粉末 X 射线衍射证实了所有合成样品的单相性。此外，还估算了锰替代对单胞参数的影响。在性质的差示扫描量热研究中，确定了锰对铁的替代对所获样品居里点的影响，居里点是由所生产材料的磁性结构变化引起的。结果表明，锰替代物对六价钡铁氧体的特性有显著影响，并证实了控制替代过程以生产具有可调磁性特征的材料的可能性。
Synthesis and Study of Manganese-Substituted Barium Hexaferrite BaFe12–xMnxO19
The study of manganese-substituted barium hexaferrite BaFe12–xMnxO19 with a degree of substitution x from 0 to 2 is presented. The samples are prepared by the solid-phase synthesis at a temperature of 1275 °C and isothermal holding for 5 h. The elemental composition of the samples is determined using energy dispersive spectroscopy, which shows good correspondence with the specified calculated compositions. Monophasicity of all synthesized samples is confirmed by powder X-ray diffraction. In addition, the effect of manganese substitution on the unit cell parameters is estimated. In the differential scanning calorimetry study of the properties, the effect of manganese substitution for iron on the Curie points of the samples obtained, which are caused by changes in the magnetic structures of the produced materials, is determined. The results indicate a significant effect of manganese substitution on the properties of barium hexaferrite and confirm the possibility to control the substitution process for the production of materials with adjustable magnetic characteristics.
期刊介绍：
Journal is an interdisciplinary publication covering all aspects of structural chemistry, including the theory of molecular structure and chemical bond; the use of physical methods to study the electronic and spatial structure of chemical species; structural features of liquids, solutions, surfaces, supramolecular systems, nano- and solid materials; and the crystal structure of solids.
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