Sintering temperature dependence of optimized microstructure formation of BaFe12O19 using sol–gel method

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• 作者：S. Kanagesan ; M. Hashim ; T. Kalaivani…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：26
• 期：3
• 页码：1363-1367
• 全文大小：494 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1573-482X

文摘

In an attempt to obtain the best possible properties of barium hexaferrite (BaFe12O19), the sol–gel synthesis method was chosen and, the optimum sintering conditions were established. The effects of the sintering temperature on the structural, morphological and magnetic properties of hexaferrite were studied. X-ray analysis indicates that the sintered samples (1,000-,150?°C) remained in the hexagonal structure. From this analysis, no secondary phases are identified. The effect of sintering temperature on the grain growth of BaFeBaFe12O19 is confirmed by the microstructure using HR-SEM and is in good agreement with the XRD analysis based on the peak intensity of the (107) plane. The samples sintered at 1,150?°C showed the densities as ~93?% of theoretical density. Sintering temperature affected the grains in compact samples. The results show that homogeneous and dense BaFeBaFe12O19 ceramics obtained at a lower sintering temperature of 1,150?°C which is lower than the normally reported sintering temperature of ?,200?°C. The thermal treatment can markedly affect the grains in compact samples.