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In situ Mössbauer and magnetization studies of Fe–Si nanocrystallization in Fe73.5Si13.5B9Cu1Nb1 X2, with X = Nb, Zr, Mo, amorphous alloys

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Abstract

The Fe–Si nanosized particles were obtained by controlled partial crystallization of Fe73.5Si13.5B9Cu1Nb1X2 (X = Nb, Zr, Mo) amorphous alloys. In situ Mössbauer spectroscopy and magnetization measurements have been used to follow the temperature-dependent magnetization of the amorphous as well as of the nanosized Fe–Si particles. Our results, for the residual amorphous and of nanoparticles phases, show that the temperature dependence of the hyperfine field and magnetization of both residual amorphous and nanocrystalline Fe(Si) phases are different from that of the as-quenched bulk amorphous or crystalline Fe3Si alloys. Likewise, from the temperature dependence studies it was possible to determine that the onset temperature of the nanocrystallization process increases in the sequence Mo < Nb < Zr, for the same annealing conditions.

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Authors and Affiliations

  1. Facultad de Ciencias Físicas, Universidad Nacional Mayor de San Marcos, Apartado Postal 14-0149, Lima 14, Peru

    V.A. Peña Rodríguez

  2. Centro Brasileiro de Pesquisas Físicas, Rua Doutor Xavier Sigaud 150, Urca, 22290-180, Rio de Janeiro, RJ, Brazil

    E.M. Baggio-Saitovitch, A.Y. Takeuchi & F. Garcia

  3. Departamento de Física, Universidade Federal de Espirito Santo, Vitória, 29060-900, Espirito Santo, ES, Brazil

    E.C. Passamani

  4. Departamento de Física de la Materia Condensada, Universidad de Sevilla, Apartado 1065, E-41080, Sevilla, Spain

    J.M. Borrego & A. Conde

Authors
  1. V.A. Peña Rodríguez
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  2. E.M. Baggio-Saitovitch
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  3. A.Y. Takeuchi
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  4. F. Garcia
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  5. E.C. Passamani
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  6. J.M. Borrego
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  7. A. Conde
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Peña Rodríguez, V., Baggio-Saitovitch, E., Takeuchi, A. et al. In situ Mössbauer and magnetization studies of Fe–Si nanocrystallization in Fe73.5Si13.5B9Cu1Nb1 X2, with X = Nb, Zr, Mo, amorphous alloys. Hyperfine Interactions 122, 1–7 (1999). https://doi.org/10.1023/A:1012641801927

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  • DOI: https://doi.org/10.1023/A:1012641801927

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