Morphology and magnetic properties of barium hexaferrite ceramics synthesized in x wt% NaCl-(100-x) wt% KCL molten salts

Date

2014-01-01

Author

Aydogan, Eda
Kaya, Serap
Dericioğlu, Arcan Fehmi

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Micron size barium hexaferrite (BaFe12O19) platelets were prepared by the molten-salt synthesis method in various weight proportions of NaCl-KCl salt mixtures as a liquid medium. The effect of molten salt composition-x wt% NaCl and (100-x) wt% KCl-on the amount of barium hexaferrite phase formation, as well as, on the morphology and magnetic properties of the final products are discussed. Inductively coupled plasma-mass spectroscopy (ICP-MS) was used to determine the solubility of the starting materials in the salts in order to understand the formation mechanism of barium hexaferrite. X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) were used to identify the characteristics of the synthesized barium hexaferrite platelets. ICP-MS analysis showed that the Fe2O3 solubility is negligible, however, BaCO3 has very high solubility in both molten KCl and NaCl. Quantitative XRD and SEM results showed that molten salt containing 100 wt% NaCl at 900 degrees C (for 2 h) resulted in the highest production of barium hexaferrite. Further, SEM results showed that KCl-rich molten salt led to the formation of sharper faceted platelet morphology, whereas NaCl-rich ones resulted in more round platelets.

Subject Keywords

Process Chemistry and Technology, Materials Chemistry, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Ceramics and Composites

URI

https://hdl.handle.net/11511/41173

Journal

CERAMICS INTERNATIONAL

DOI

https://doi.org/10.1016/j.ceramint.2013.08.002

Collections

Test and Measurement Center In advanced Technologies (MERKEZ LABORATUVARI), Article

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Citation Formats

E. Aydogan, S. Kaya, and A. F. Dericioğlu, “Morphology and magnetic properties of barium hexaferrite ceramics synthesized in x wt% NaCl-(100-x) wt% KCL molten salts,” CERAMICS INTERNATIONAL, pp. 2331–2336, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41173.