Microwave Absorbing Properties of Ba0.6Sr0.4Fe12-zMnzO19 (z = 0 – 3) Materials in XBand Frequencies

Yohanes Edi Gunanto; Eric Jobiliong; Wisnu Ari Adi

doi:10.5614/j.math.fund.sci.2016.48.1.6

Microwave Absorbing Properties of Ba0.6Sr0.4Fe12-zMnzO19 (z = 0 – 3) Materials in XBand Frequencies

Yohanes Edi Gunanto, Eric Jobiliong, Wisnu Ari Adi

Abstract

Ba_0.6Sr_0.4Fe_12-zMn_zO₁₉ (z = 0,1,2, and 3) were successfully synthesized by solid state reaction through a mechanical milling method. Stoichiometric quantities of analytical-grade MnCO₃, BaCO₃, Fe₂O₃, and SrCO₃ precursors with purity greater than 99% were mixed. It was found that the best phase composition, having an absorber with high performance, was Ba_0.6Sr_0.4Fe₁₁MnO₁₉. Refinement of the X-ray diffraction patterns revealed that the Ba_0.6Sr_0.4Fe₁₁MnO₁₉ was single-phase and had a hexagonal structure (P63/mmc). Mechanical milling of Ba_0.6Sr_0.4Fe₁₁MnO₁₉ powders produced particles with a mean size of ~850 nm. SEM images revealed the morphology of the particles as being aggregates of fine grains. The magnetic properties of the Ba_0.6Sr_0.4Fe₁₁MnO₁₉particles showed a low coercivity and a high remanent magnetization. The Ba_0.6Sr_0.4Fe₁₁MnO₁₉ has certain microwave absorber properties in the frequency range of 8-14 GHz, with an absorbing peak value of ‑8 dB and -10 dB at frequencies of 8.5 and 12.5 GHz, respectively. The study concludes that the Ba_0.6Sr_0.4Fe_12-zMnzO₁₉ that was successfully synthesized is a good candidate for use as an electromagnetic absorber material.

Keywords

absorption; Ba0.6Sr0.4Fe12-zMnzO19; composition; magnetic; morphology; particle size.

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References

Mustofa, A, Mardiana, H., Noor, B.I. & Nazlim, Y.A., Microwave Magnetic Dielectric Properties of Some Cerium Ytrium Garnet, J. Sains Malaysia, 37, pp. 202-210, 2008.

Li, Z.W., Guoqing, L., Linfeng, C., Wu, Y. & C.K., Ong, Co2+ Ti4+ Substituted Z-type Barium Ferrite with Enhanced Imaginary Permeability and Resonance Frequency, J. of App. Phys., 99(6), pp. 063905-063905-7, 2006.

Zhang, H., Yao, X., Wu, M. & Zhang, L., Complex Permitivity and Pearmibility of Zn-Co Substituted Z-type Hexaferrite Prepared by Citrate Sol-gel Process, British Cer. Transc., 102, pp. 1-10, 2003.

González-Angeles, A., Grusková, A., Lipka, J., Sláma, J. & Jančárik, V., Magnetic and Structural Studies of Ba0.5Sr0.5(ZnTi)xFe12-2xO19 Prepared by Ball Milling, Jordan Journal of Phys., 1(1), pp. 37-42, 2008.

Shams, M.H., Salehi, S.M.A. & Ghasemi, A., Electromagnetic Wave Absorption Characteristics of Mg–Ti Substituted Ba-hexaferrite, Materials Letters, 62, pp. 1731-1733, 2008.

Li, X.C., Gong, R., Feng, Z., Yan, J., Shen, X. & He, H., Effect of Particle Size and Concentration on Microwave-Absorbing Properties of Hexaferrite Composites, J. Am. Ceram. Soc., 89(4), pp. 1450-1452, 2006.

Qiu, J., Shen, H. & Gu, M., Microwave Absorption of Nanosized Barium Ferrite Particles Prepared using High-energy Ball Milling, Powder Technology, 154, pp. 116-119, 2005.

Toby, B.H., EXPGUI, A Graphical User Interface for GSAS, Journal of Applied Crystallography, 34, pp. 210-213. 2001.

Zlatkov, B.S. Nikolic, M.V., Aleksic, O., Danninger, H. & Halwax, E., A Study of Magneto-crystalline Alignment in Sintered Barium Hexaferrite Fabricated by Powder Injection Molding, Journal of Magnetism and Magnetic Materials, 321, pp. 330-335. 2009.

Rutt, O.J., Williams, G.R. & Clarke, S.J., Reversible Lithium Insertion and Copper Extrusion in Layered Oxysulfides, Chemical Communications, 27, 2006.

Al-Saie, A.M., Al-Shater, A., Arekat, S., Jaffar, A. & Bououdina, M., Effect of Annealing on the Structure and Magnetic Properties of Mechanically Milled TiO2–Fe2O3 Mixture, Ceramics International, 39(4), pp. 3803-3808, 2013.

Jankovskýa, O., Sedmidubskýa, D., Šimeka, P., Sofera, Z., Ulbrich, P. & Bartůněka, V., Synthesis of MnO, Mn2O3 and Mn3O4 Nanocrystal Clusters by Thermal Decomposition of Manganese Glycerolate, Ceramics International, 41(1), Part A, pp. 595-601, 2015.

DOI: http://dx.doi.org/10.5614%2Fj.math.fund.sci.2016.48.1.6