Effect of Mg Substitution on Microwave Absorption of BaFe12O19

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The Magnesium substituted barium hexaferrites were prepared by sol-gel auto-combustion method according to the molecular formula BaMgxFe(12−x)O19 (x=0, 0.5 and 1). The crystalline structure, morphology, complex permittivity, and complex permeability were measured with X-ray Diffraction (XRD), Field Emission-Scanning Electron Microscopy (FE-SEM) and Vector Network Analyzer (VNA) respectively. From XRD study, the formations of single phase ultrafine particles have been confirmed. The XRD analysis showed that variation in lattice parameter with change in x value. The FE-SEM study shows that synthesized particles have hexagonal morphology. The minimum reflection loss of -24.86 dB at 9.04 GHz was found with the increase in band width at x=1, which suits its application as RADAR absorbing materials.

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Edited by:

B.S.S. Daniel and G.P. Chaudhari

Pages:

62-66

Citation:

A. Kumar et al., "Effect of Mg Substitution on Microwave Absorption of BaFe12O19", Advanced Materials Research, Vol. 585, pp. 62-66, 2012

Online since:

November 2012

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$38.00

[1] Sun Chang, Sun Kangning, Chui Pengfei, Microwave absorption properties of Ce-substituted M-type barium ferrite, J. Magn. Magn. Mater. 324 (2012) 802-805.

DOI: https://doi.org/10.1016/j.jmmm.2011.09.023

[2] Dan Zabetakis, Mike Dinderman, Paul Schoen, Metal-coated cellulose fibers for use in composites applicable to microwave technology, Adv. Mater. 17 (2005) 734-738.

DOI: https://doi.org/10.1002/adma.200400320

[3] Ali Ghasemia, Xiaoxi Liu, Akimitsu Morisako, Magnetic and microwave absorption properties of BaFe12-x(Mn0. 5Cu0. 5Zr)x/2O19 synthesized by sol–gel processing, J. Magn. Magn. Mater. 316 (2007) 105–108.

DOI: https://doi.org/10.1016/j.jmmm.2007.02.043

[4] Rahul Sharma, R.C. Agarwala, Vijaya Agarwala, Development of radar absorbing nano crystals by microwave irradiationnn, Mat. Lett. 62 (2008) 2233-2236.

DOI: https://doi.org/10.1016/j.matlet.2007.11.076

[5] Yong-Jin Kim, Sung-Soo Kim, Magnetic and microwave absorbing properties of Ti and Co substituted M-hexaferrites in Ka-band frequencies (26. 5~40 GHz), J. Electroceram. 24(4) (2010) 314-318.

DOI: https://doi.org/10.1007/s10832-009-9575-x

[6] Philip Shepherd, Kajal K. Mallick, Roger J. Green, Dielectric properties of cobalt substituted M-type barium hexaferrite prepared by co-precipitation, J Mater. Sci: Mater. Electron 18 (2007) 527–534.

DOI: https://doi.org/10.1007/s10854-006-9059-6

[7] Yue Zhong-yue, Zhong Min-jian, MA Hong-liang, Guo Guang-lei, Effect of Al-substitution on phase formation and magnetic properties of barium hexaferrite synthesized with sol-gel auto-combustion method, J. Shanghai Univ. 12(3) (2008) 216–220.

DOI: https://doi.org/10.1007/s11741-008-0306-1

[8] Zhang Haijun, Liu Zhichao, Ma Chengliang, Yao Xi, Zhang Liangying, Wu Mingzhong, Complex permittivity, permeability, and microwave absorption of Zn- and Ti-substituted barium ferrite by citrate sol-gel process, Mat. Sci. Engin. B 96 (2002).

DOI: https://doi.org/10.1016/s0921-5107(02)00381-1

[9] D. Singh, A. Kumar, S. Meena, and V. Agarwala, Analysis of frequency selective surfaces for radar absorbing materials, Prog. Elect. Res. B 38 (2012) 297-314.