A. Punda, K. P. Gafarov, V. Zhivulin, A. Chernukha, A. Zykova, S. Gudkova, L. A. Pesin, G. Vyatkin, D. A. Vinnik
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引用次数: 0
摘要
本研究介绍了式 BaFe12-xInxO19 的铟取代钡六价铁氧体样品的合成和检测结果。这些铁氧体是通过固态合成法获得的。用 x(In) 表示的铟的替代水平以 0.25 的增量从 0 到 1 变化。利用 EDS 数据计算出了化合物的化学计量公式。粉末 X 射线衍射分析表明,所有样品都形成了具有 M 型六铁氧体结构的单晶相。根据粉末衍射数据计算出了晶胞的参数。当铁被铟取代时,晶格参数从 x = 0 扩展到 x = 0.84。利用差示扫描量热法(DSC)测定了合成铁氧体的居里温度。结果表明,随着铟含量从 x = 0 增加到 x = 0.84,BaFe12-xInxO19 的居里温度从 452°C 下降到 292°C。
Synthesis and Structure of Barium Hexaferrite BaFe12–xInxO19 (x = 0–1)
This study presents the results of the synthesis and examination of indium-substituted barium hexaferrite samples with the formula BaFe12–xInxO19. The ferrites were obtained via a solid state synthesis method. The substitution level of indium, represented by x(In), was varied from 0 to 1 in 0.25 increments. The stoichiometric formulas of the compounds were calculated using the EDS data. The powder X-ray diffraction analysis indicated that all samples form a single crystalline phase with the M-type hexaferrite structure. Parameters of the crystal unit cell were calculated from powder diffraction data. An expansion of the crystal lattice parameters was observed as iron was substituted with indium, from x = 0 to x = 0.84. The Curie temperatures of the synthesized ferrites were determined using differential scanning calorimetry (DSC) method. It is established that the Curie temperature decreases from 452 to 292°C with In content growth from x = 0 to x = 0.84 in the BaFe12–xInxO19.