Coating Effects on Electromagnetic Wave Absorbers Prepared with Mn-Zn Ferrites

  • Song Jae-Man (Research Institute of Industrial Technology, Korea Maritime University) ;
  • Kim Dong-Il (Department of Electronics & Engineering, Korea Maritime University) ;
  • Che Seung-Hun (Department of Electronics & Engineering, Korea Maritime University) ;
  • Choi Yun-Seok (Department of Electronics & Engineering, Korea Maritime University) ;
  • Kim Ki-Man (Department of Electronics & Engineering, Korea Maritime University) ;
  • Rhyu Keel-Soo (Department of IT Engineering, Korea Maritime University)
  • Published : 2005.12.01

Abstract

We prepared Mn-Zn ferrite Electromagnetic(EM) wave absorbers. The Mn-Zn ferrite EM wave absorbers were coated with Sr ferrite powders and $Al(OH)_3$ powders. The coated Mn-Zn ferrite EM wave absorbers show improved absorption compared with non-coated Mn-Zn EM wave absorbers.

References

  1. A. Verma, R. G. Mendiratta, T. C. Goel, and D. C. Dube, 'Microwave studies on strontium ferrite based absorbers', J. Electroceramics, vol. 8, pp. 203-208, 2002 https://doi.org/10.1023/A:1020841915616
  2. J. M. Song, D. I. Kim, S. J. Shin, S. H. Moon, and K. S. Rhyu, 'Development of electromagnetic wave absorbers with Alnico magnets', J. Korean Phys. Soc., vol. 44, no. 6, pp. 1495-1498, 2004
  3. D. I. Kim, S. J. Kim, and J. M. Song, 'Dependence of preparation temperature of the microwave absorption properties in absorbers for mobile phones', J. Korean Phys. Soc., vol. 43, no. 2, pp. 269-272, 2003
  4. S. H. Moon, S. J. Shin, J. M. Song, D. I. Kim, and K. M. Kim, 'Development of composite Ba ferrite EM wave absorbers for GHz frequency', J. Korea Electromagnetic Engineering Soc., vol. 14, no. 12, pp. 1329-1334, 2003
  5. Y. Kotsuka, 'Ferrite electromagnetic' wave absorber', Jap. J. Appl. Magns., vol. 21, no. 10, pp. 1159-1163, 1997
  6. S. Sugimoto, K. Okayama, S. I. Kondo, H. Ota, M. K., Y. Yoshida, H. Nakamura, D. Book, T. Kago- tami, and M. Homma, 'Barium M-type ferrite as an electromagnetic microwave absorber in the GHz range', Materials Trans., JIM, vol. 39, no. 10, pp. 1080-1083, 1998
  7. J. M. Song, H. J. Yoon, D. I. Kim, S. J. Kim, S. M. Ok, B. Y. Kim, and Ki Man Kim, 'Dependence of electromagnetic wave absorption on ferrite particle size in sheet-type absorbers', J. Korean Phys. Soc., vol. 42, no. 5, pp. 671-675, 2003
  8. M. Cao, J. Zhu, J. Yuan, T. Zhang, Z. Peng, Z. Gao, G. Xiao, and S. Qin, 'Composition design and performance prediction towards a multi-layer microwave absorber', Materials and Design, vol. 23, no. 23, pp. 557-564, 2002 https://doi.org/10.1016/S0261-3069(02)00023-7