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Bulletin of Materials Science

, Volume 29, Issue 5, pp 457–460 | Cite as

Crystallization of M-type hexagonal ferrites from mechanically activated mixtures of barium carbonate and goethite

  • J. Temuujin
  • M. Aoyama
  • M. Senna
  • T. Masuko
  • C. Ando
  • H. Kishi
  • A. Minjigmaa
Ceramics and Glasses

Abstract

M-type hexagonal ferrite precursor was prepared by a soft mechanochemical treatment of BaCO3 and α-FeOOH mixtures. The effect of milling on its structure and thermal behaviour was examined by XRD, SEM and FTIR. Well crystallizedM-type hexagonal ferrite was formed from just 1 h milled precursors at 800°C. The beneficial effect of milling was explained in terms of increased homogeneity with simultaneous hetero bridging bond formation between powder constituents.

Keywords

M-type hexagonal ferrite mechanical activation powder crystallization 

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References

  1. Ding J, Tsuzuki T and McCormick P G 1998J. Magn. Magn. Mater. 177-181 931CrossRefGoogle Scholar
  2. Janasi S R, Emura M, Landgraf F J G and Rodrigues D 2002J. Magn. Magn. Mater. 238 168CrossRefGoogle Scholar
  3. Huang J, Zhuang H and Li W 2003J. Magn. Magn. Mater. 256 390CrossRefGoogle Scholar
  4. Liu X, Wang J, Ding J, Chen M S and Shen Z X 2000J. Mater. Chem. 10 1745CrossRefGoogle Scholar
  5. Mendoza-Suarez G, Matutes-Aquino J A, Escalante-Garcia J I, Mancha-Molinar H, Rios-Jara D and Johal K K 2001J. Magn. Magn. Mater. 223 55CrossRefGoogle Scholar
  6. Ogasawara T and Oliveira MAS 2000J. Magn. Magn. Mater. 217 147CrossRefGoogle Scholar
  7. Schoeps W 1979Silikattechnik 30 195Google Scholar
  8. Steier H P, Requena J and Moya J S 1999J. Mater. Res. 14 3647CrossRefGoogle Scholar
  9. Subrt J and Tlaskal J 1993Solid State Ionics 63-65 110CrossRefGoogle Scholar
  10. Temuujin J, Aoyama M, Senna M, Masuko M, Ando T and Kishi H 2004J. Solid State Chem. 177 3903CrossRefGoogle Scholar

References

  1. et al 2002J. Serb. Chem. Soc. 67 761Google Scholar
  2. Radovic L Ret al 1998Carbon 36 1841CrossRefGoogle Scholar
  3. Roman-Martinez M Cet al 1993Carbon 31 895CrossRefGoogle Scholar
  4. Sundberg K Met al 1989J. Electrochem. Soc. 136 434CrossRefGoogle Scholar
  5. Tompkins F C 1978Chemisorption of gases on metals (London: Academic Press) p. 77Google Scholar
  6. Zhong D Het al 2000Carbon 38 1199CrossRefGoogle Scholar
  7. Zhou Set al 1994J. Therm. Anal. 41 767CrossRefGoogle Scholar
  8. Zhuang Q Let al 1994Carbon 32 539CrossRefGoogle Scholar

Copyright information

© The Indian Academy of Sciences 2006

Authors and Affiliations

  • J. Temuujin
    • 1
  • M. Aoyama
    • 1
  • M. Senna
    • 1
  • T. Masuko
    • 2
  • C. Ando
    • 2
  • H. Kishi
    • 2
  • A. Minjigmaa
  1. 1.Department of Applied Chemistry, Faculty of Science and TechnologyKeio UniversityYokohamaJapan
  2. 2.Materials Research and Development Division, General Research and Development LaboratoriesTaiyo Yuden Co. Ltd.GunmaJapan

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