Template-Free Hydrothermal Synthesis of Octahedral Fe₃O₄ Microcrystals and its Magnetic Property

Abstract:

Well-defined Fe₃O₄ octahedrons have been readily realized in high yield via a simple and general hydrothermal synthesis technology free of any surfactant or template. Detailed investigations indicated that the octahedral Fe₃O₄ microcrystals are single crystal and were dominated by (110) surfaces. The influences of the amount of NaOH on the morphologies of the final products were investigated. The experimental results show that the high concentrations of NaOH play vital roles for the formation of octahdral Fe₃O₄ microcrystals. Besides, the magnetic property of the as-obtained Fe₃O₄ sample was evaluated as potential materials for electromagnetic device application on a vibrating sample magnetometer (VSM) at room temperature. The values of saturation magnetization and coercivity of octahedral Fe₃O₄ are approximately 95 emu g^-1 and 197 Oe, respectively.

• Periodical: Applied Mechanics and Materials (Volume 700)
• Pages: 141-147
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.700.141
• Online since: December 2014
• Authors: Li Li*, A Juan Yue, Jun Liang
• Keywords: Free-Template, Hydrothermal Synthesis, Magnetic Property, Octahedral Fe₃O₄

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