首页|Magnetic Properties of Manganese-Titanium Substituted Barium Ferrite Ba(TiMn)_xFe_(12-2x)O_(19)(x=0.0, 0.5,1.0,1.5, 2.0) Prepared by the Molten Salt Method

Magnetic Properties of Manganese-Titanium Substituted Barium Ferrite Ba(TiMn)_xFe_(12-2x)O_(19)(x=0.0, 0.5,1.0,1.5, 2.0) Prepared by the Molten Salt Method

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M-type hexaferrites Ba(TiMn)_x Fe_(12-2x)O_(19) (x=0 to 2) powders were synthesized by molten salt method. X-ray diffraction, scanning electron microscope and vibrating sample magnetometer were used to analyze the structures and electromagnetic properties. The results showed that, the magnetoplumbite structures for all samples were formed. Magnetic hysteresis loop measurements of the Ba(TiMn)_xFe_(12-2x)O_(19), exhibitted that the saturation magnetization (M_s), the remanent magnetization (M_r) and the coercitivity (H_c) of compounds depended strongly on the chemical composition of materials. The maxium values of M_s (52.68emu/g) and M_r (32.89emu/g) of the compounds were found at x=0.5; however, the values of H_c and the areas of magnetic hysteresis loop of compounds decreased with increasing the value of c. The Ba(TiMn)_(1.5)Fe_9O_(19)/paraffin wax composites containing 40vol% of doped barium ferrite exhibitted good absorption performances in the frequency range of 2-14 GHz.

BaM type hexaferritesmolten salt methodmagnetic propertiesMn-Ti substitutes

Li Haifeng、Gong Rongzhou、Luo Hao、Zhou Jun、Fan Liren、Wang Xian

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Department of Electronic Science & Technology, Huazhong University of Science and Technology, Wuhan 430074, China Faculty of Material Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, China

Department of Electronic Science & Technology, Huazhong University of Science and Technology, Wuhan 430074, China

Department of Electronic Science & Technology, Huazhong University of Science and Technology, Wuhan 430074, China College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China

Faculty of Material Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, China

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2010

10.4028/www.scientific.net/KEM.434-435.240

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.434/435