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Hyperfine Interactions

, Volume 203, Issue 1–3, pp 9–15 | Cite as

Mössbauer analysis of high-energy mechanical-milled sand fraction of a magnetic soil developing on basalt

  • José Flávio Marcelino Borges
  • Marlon Luiz Hneda
  • André Maurício Brinatti
  • João Batista Marimon da Cunha
  • Jadir Aparecido Rosa
  • José Domingos Fabris
Article

Abstract

A sample of the coarse sand fraction from the soil material of the A-horizon (0–0.2 m from the soil surface) of a dusky red magnetic Oxisol was submitted to high-energy mechanical milling for different times. This assay aimed mainly at (a) monitoring the individualization of strongly aggregated mineral particles, and (b) measuring the effect of the milling pressure on the mineralogy changes of the material. These data are also intended to experimentally subside any physical model describing the mechanical behavior of the superficial soil layer that is subjected to intensive machine management, in agriculture fields. Powder X-ray data reveal that some mineralogical phases, notably gibbsite, disappear soon after the first few hours milling. The 298 K-transmission Mössbauer spectrum for the non-milled sand sample shows a qualitatively typical pattern for the sand fraction of basalt derived soils, with magnetically ordered sextets, assignable mainly to hematite and maghemite, and an intense central (super)paramagnetic Fe3 +  doublet. For the milled samples, spectra revealed progressive spectral reduction of the magnetic hyperfine structure, with concomitant increase of relative subspectral areas due to (super)paramagnetic phases, as the milling time increased. This result is consistent with the reduction of measured saturation magnetization, from 4.96(8) J T − 1 kg − 1, for the non-milled sample, to 3.26(7) J T − 1 kg − 1, for the sample milled for 8 hours.

Keywords

Iron oxide Magnetic soil Mineral aggregates 

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References

  1. 1.
    Moreti, D., Alves, M.C., Valério Filho, W.V., Carvalho, M.P.: Atributos Químicos de um Latossolo Vermelho sob Diferentes Sistemas de Preparo, Adubações e Plantas de Cobertura. R. Bras. Ci. Solo. 31, 167–175 (2007) (in Portuguese)Google Scholar
  2. 2.
    Schaefer, C.E.G.R., Souza, C.M., Vallejos M.F.J. et al.: Características da porosidade de um argissolo vermelho-amarelo submetido a diferentes sistemas de preparo de solo. R. Bras. Ci. Solo. 25, 765–769 (2001) (in Portuguese)Google Scholar
  3. 3.
    Silva, M.L.N., Curi, N., Blancaneaux, P.: Sistema de Manejo e Qualidade Estrutural de Latossolo Roxo. Pesqui. Agropecu. Bras. 35, 2485–2492 (2000) (in Portuguese)CrossRefGoogle Scholar
  4. 4.
    Paterniani, E.: Agricultura sustentável nos trópicos. Estud. Av. 15, 303–326 (2001) (in Portuguese)CrossRefGoogle Scholar
  5. 5.
    Huggins, D.R., Reganold, J.P.: Plantio Direto, uma Revolução na Preservação. Sci. Am. Bra. 75, 56–65 (2008) (in Portuguese)Google Scholar
  6. 6.
    Suryanarayana, C.: Mechanical Alloying and Milling. Prog. Mater. Sci. 46, 1–184 (2001)CrossRefGoogle Scholar
  7. 7.
    Cótica, L.F., Zanatta, S.C., Rocha, M.A., Santos, I.A., Paesano, A., Da Cunha, J.B.M., Hallouche, B.: Phase evolution and magnetic properties of a high-energy ball-milled hematite-alumina system. J. Appl. Phys. 95, 1307–1314 (2004)ADSCrossRefGoogle Scholar
  8. 8.
    Calka, A., Wexler, D.: Mechanical milling assisted by electrical discharge. Nature 419, 147–151 (2002)ADSCrossRefGoogle Scholar
  9. 9.
    Gonçalves, D., Leite, W.C., Brinatti, A.M., Saab, S.C., Iarosz, K.C., Mascarenhas, Y.P., Carneiro, P.I.B., Rosa, J.A.: Mineralogia de um Latossolo Vermelho Distrófico submetido a diferentes manejos por 24 anos. R. Bras. Ci. Solo, 32, 2647–2652 (2008) (in Portuguese)CrossRefGoogle Scholar
  10. 10.
    Murty, B.S., Ranganathan, S.: Novel material synthesis by mechanical alloying/milling. Int. Mater. Rev. 43, 101–141 (1998)CrossRefGoogle Scholar
  11. 11.
    Coey, J.M.D., Cugat, O., McCauley, J., Fabris, J.D.: A portable soil magnetometer. Rev. Fis. Apl. Instrum. 7, 25–30 (1992)Google Scholar
  12. 12.
    Fabris, J.D., Coey, J.M.D.: Espectroscopia Mössbauer do 57Fe e Medidas Magnéticas na Análise de Geomateriais. In: Alvarez, V.V.H., Schaefer, C.E.G.R., de Barros, N.F., de Mello, J.W.V., da Costa, L.M. (eds.) Tópicos em Ciências do Solo. Viçosa, Sociedade Brasileira de Ciência do Solo, vol. 2, pp. 47–102 (2002) (in Portuguese)Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • José Flávio Marcelino Borges
    • 1
  • Marlon Luiz Hneda
    • 1
  • André Maurício Brinatti
    • 1
  • João Batista Marimon da Cunha
    • 2
  • Jadir Aparecido Rosa
    • 3
  • José Domingos Fabris
    • 4
  1. 1.Department of PhysicsState University of Ponta GrossaPonta GrossaBrazil
  2. 2.Institute of PhysicsFederal University of Rio Grande do SulPorto AlegreBrazil
  3. 3.Agronomy Institute of ParanáPolo Regional de Ponta GrossaPonta GrossaBrazil
  4. 4.Federal University of Jequitinhonha and Mucuri Valleys (UFVJM)DiamantinaBrazil

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