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Dielectric constant, magnetic permeability and microwave absorption studies of hot-pressed Ba-CoTi hexaferrite composites in X-band

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Abstract

The microwave absorption, complex permittivity and complex permeability studies of hot-pressed hexaferrite composites prepared with Ba(CoTi)xFe12-2xO19 (x = 0.0, 0.2, 0.4, 0.8, and 1.0) were made in the frequency range from 8.0 to 12.4 GHz. The hexaferrite composites with x > 0.0 exhibit significant dispersion in the complex permittivity (εr′-jεr″). However the dispersion in complex permeability (μr′-jμr″) is not significant and is attributed to the shielding effect of polymer matrix over the ferrite crystallites. The reflection loss has been studied as function of frequency, composition and thickness of absorber. A comparison of reflection loss of hot-pressed ferrite composites with that of normal sintered ferrite composites was made and analyzed. A minimum reflection loss of—24.0 dB is obtained at 9.9 GHz for 2.8 mm thick sample of BaCo0.4Ti0.4Fe11.2O19 hot-pressed hexaferrite composite.

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References

  1. Naito Y, Suetake K (1971) IEEE Trans Micro Theory Tech MTT 19:65

    Article  Google Scholar 

  2. Dishovaski N, Petkov A, Nedkov I, Razkazov I (1994) IEEE Trans Magn MAG 30:969

    Article  Google Scholar 

  3. Singh P, Babbar VK, Razdan A, Puri RK, Goel TC (May1, 2000) J Appl Phys 87:4362

  4. Singh P, Babbar VK, Razdan A, Srivastava SL, Goel TC (2000) Materials Sci Eng B 78:70

    Article  Google Scholar 

  5. Nedkov I, Petkov A, Karpov V (1990) IEEE Trans Magn 26:14839

    Article  Google Scholar 

  6. Kim SS, Jo SB, Chaoi KK, Kim JM, Chun KS (1991) IEEE Trans Magn 27:5462

    Article  CAS  Google Scholar 

  7. Razdan A, Babbar VK, Singh P (2000) Ind J Engi Mat Sci 7:422

    CAS  Google Scholar 

  8. Withop A (1978) IEEE TansMagn 14(5):439

    Article  Google Scholar 

  9. Babbar VK, Puri RK (1992) IEEE TransMagn 28:1621

    Google Scholar 

  10. Nicolson AM, Ross GF (1970) IEEE Trans Instrum Meas 1(M-19):377

    Article  Google Scholar 

  11. Weir WB (1974) Proceeding IEEE 62:33

    Article  Google Scholar 

  12. Singh P, Babbar VK, Razdan A, Goel TC, Srivastava SL (2004) Ind J Pure & Appl Phys 42:221

    Google Scholar 

  13. Koops CG (1951) Phys Rev 83:121

    Article  CAS  Google Scholar 

  14. Fairweather A, Roberts FF, Welch AJE (1952) Repts Prog In Phys, Ferrites 15:142

    Article  Google Scholar 

  15. Albanese G (1977) J Phys 38:C1-85

    Google Scholar 

  16. Verwey EJN, Haajiman PW, Romeyn FC (1947) J Chem Phys 15:181

    Article  CAS  Google Scholar 

  17. Brockman FG, Powling PH, Steneck WG (1949) Phys Rev 75:1440

    Article  CAS  Google Scholar 

  18. Ishino K, Narumiya Y (1987) Amer Ceramic Bulletin 66:1469

    CAS  Google Scholar 

  19. Rado GT (1953) Review Mod Phys 25:819

    Google Scholar 

  20. Slama J, Gruskova A, Keszegh L, Kollar M (1994) IEEE Trans Mag 30:1101

    Article  Google Scholar 

  21. Kwon HJ, Shin JY, Oh JH (1994) J Appl Phys 75:10

    Article  Google Scholar 

  22. Kim KY, Kim WS, Jung HJ, Jang SD (1992) Jpn J Appl Phys 31:2096

    Article  CAS  Google Scholar 

Download references

Acknowledgements

The author (PS) would like to thank Dr. R. K. Puri, former professor, Department of physics, I.I.T. Delhi, New Delhi for his guidance and support in this work. Thanks are also due to Mr. Vipitya Katiyar, Department of physics, Allahabad University for his help at measurement stage on MNA Model HP 8510B.

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Author notes

  1. Praveen Singh

    Present address: Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University, R. No. 459, West Zone 2, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan

  2. V. K. Babbar

    Present address: Physics Department, Queen’s University, Kingston, Ontario, Canada, K7L 3N6

Authors and Affiliations

  1. Biophysics & Electron Microscopy Section, IVRI, Izatnagar, UP, India

    Praveen Singh

  2. Department of Applied Physics, G.N.D. University, Amritsar, India

    V. K. Babbar & Archana Razdan

  3. M.N. Saha Centre for Space Studies, University of Allahabad, Allahabad, India

    S. L. Srivastava & V. K. Agrawal

  4. Birla Institute of Technology-Pilani, Goa Campus, Zuarinagar, Goa, India

    T. C. Goel

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  1. Praveen Singh
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Correspondence to Praveen Singh.

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Singh, P., Babbar, V.K., Razdan, A. et al. Dielectric constant, magnetic permeability and microwave absorption studies of hot-pressed Ba-CoTi hexaferrite composites in X-band. J Mater Sci 41, 7190–7196 (2006). https://doi.org/10.1007/s10853-006-0921-y

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  • DOI: https://doi.org/10.1007/s10853-006-0921-y

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