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Hyperfine Interactions

, Volume 161, Issue 1–4, pp 211–220 | Cite as

Mechanosynthesis of YIG and GdIG: A Structural and Mössbauer Study

  • A. PaesanoJr.
  • S. C. Zanatta
  • S. N. De Medeiros
  • L. F. CÓtica
  • J. B. M. Da Cunha
Article

Abstract

We have investigated the mechanosynthesis of gadolinium and yttrium iron garnets by high-energy ball-milling of α-Fe2O3 and Gd2O3 or α-Fe2O3 and Y2O3, respectively, followed by short thermal annealings conducted at moderate temperatures. The samples were characterized by X-ray diffraction and Mössbauer spectroscopy, in order to determine the influence of the milling time and annealing conditions on the final products. For as-milled samples of each rare-earth system, the results revealed the formation of perovskite phases, in relative amounts that depend on the milling time. The formation of garnet phases was observed in as-annealed samples treated at 1000°C for 2 h or 1100°C for 3 h, i.e., at very modest annealing requirements when compared with ordinary solid-state-reaction processes performed without previous high-energy milling. Also, the occurrence was verified of a milling time for which the relative amount of garnet phases formed by annealing was maximized. This time depends on the rare-earth composing the garnet phase and on the annealing temperature.

Key Words

gadolinium-iron garnet (GdIG) high-energy ball-milling Mössbauer spectroscopy yttrium-iron garnet (YIG) 

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References

  1. 1.
    Sugimoto M., J. Am. Ceram. Soc. 82(2) (1999), 269.MathSciNetCrossRefGoogle Scholar
  2. 2.
    Pardavi-Horvath M., J. Magn. Magn. Mater. 215–216 (2000), 171.CrossRefGoogle Scholar
  3. 3.
    Tsay C.-Y., Liu C.-Y., Liu K.-S., Lin N., Hu L.-J. and Yeh T.-S., Mater. Chem. Phys. 79 (2003), 138.CrossRefGoogle Scholar
  4. 4.
    Ristic M., Czakó-Nagy I., Popovic S., Music S. and Vérts A., J. Mol. Struct. 410–411 (1997), 281.Google Scholar
  5. 5.
    Grosseau P., Bachiorrini A. and Guilhot B., Powder Technol. 93 (1997), 247.CrossRefGoogle Scholar
  6. 6.
    Ristic M., Felner I., Nowik I., Popovic S., Czakónagy I. and Music S., J. Alloys Compd. 308 (2000), 301.CrossRefGoogle Scholar
  7. 7.
    Ristic M., Nowik I., Popovic S., Felner I. and Music S., Mater. Lett. 57 (2003), 2584.CrossRefGoogle Scholar
  8. 8.
    Lataifeh M. S. and Lehlooh A.-F. D., Solid State Commun. 97 (1996), 805–807.CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • A. PaesanoJr.
    • 1
  • S. C. Zanatta
    • 1
  • S. N. De Medeiros
    • 1
  • L. F. CÓtica
    • 1
  • J. B. M. Da Cunha
    • 2
  1. 1.Departamento de FísicaUniversidade Estadual de MaringáMaringáBrazil
  2. 2.Instituto de FísicaUniversidade Federal do Rio Grande do SulPorto AlegreBrazil

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