Fabrication of Flaky Magnetic Composite Particles

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Abstract:

Diatomite coated with ɑ-Fe films were obtained by Chemical Vapor Deposition process. The resultant Fe-coated flaky diatomite particles had low densities. The results show that Fe coated diatomite flakes can be achieved, and that the coating consisted of ɑ-Fe nano-crystallite. The complex permeability and permittivity of the composites were measured in the frequency range of 1–18 GHz. The microwave absorption properties of these flaky particles are discussed. The results indicate that the flaky particles have potential to be used as a lightweight broad band microwave absorber.

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Advanced Materials Research (Volumes 490-495)

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2628-2631

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March 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] P. Singh, V.K. Babbar, A. Razdan, R.K. Puri, T.C. Goel, J., Complex permittivity, permeability, and X-band microwave absorption of CaCoTi ferrite composites, Appl. Phys. 87 (2000) 4362.

DOI: 10.1063/1.373079

Google Scholar

[2] L. Z. Wu, et al., Particle size influence to the microwave properties of iron based magnetic particulate composites, J. Magn. Magn. Mater. 285 (2005) 233.

Google Scholar

[3] Y. P. Wu, et al., Effect of doping SiO2 on high-frequency magnetic properties for W-type barium ferrite, J. Appl. Phys. 95(2004)4235.

Google Scholar

[4] K. Hatakeyama and T. Inui, Electromagnetic wave absorber using ferrite absorbing material dispersed with short metal fibers, IEEE Trans. Magn. 20(1984)1261.

DOI: 10.1109/tmag.1984.1063424

Google Scholar

[5] M. Matsumoto and Y. Miyata, Thin electromagnetic wave absorber for quasi-microwave band containing aligned thin magnetic metal particles, IEEE Trans. Magn. 33(1994)4459.

DOI: 10.1109/20.649882

Google Scholar

[6] W. L. Gindrup, U.S. Patent No. 4, 624, 798 (25 Novermber 1986).

Google Scholar

[7] F.D. Ge, et al., Effects of inclusion-shape on absorbing ablity of microwave absorbing materials. Aerospace Materials & Technology, 5(1996)42-49.

Google Scholar

[8] Satoshi Sugimoto, et al., Microwave absorption properties of Ba M-type ferrite prepared by a modified coprecipitation method, J. Magn. Magn. Mater., 290-291(2005)1188–1191.

DOI: 10.1016/j.jmmm.2004.11.381

Google Scholar