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Characterization of Nanosized Maghemite Particles Prepared by Microemulsion Using an Ionic Surfactant

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Abstract

We have characterized a system of maghemite, γ-Fe2O3, nanosized particles prepared by a microemulsion method using an ionic surfactant. The Mössbauer spectra from 21 to 298 K evolve from a totally magnetically split signal at low temperatures to a single superparamagnetic (sp) doublet at 298 K with a blocking temperature of ≈150 K. The real component of the AC susceptibility (5≤ν≤104 Hz) displays a behavior characteristic of a system of interacting particles. A broad distribution of the particle sizes is revealed by the much higher average energy barrier obtained by AC susceptibility than Mössbauer.

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References

  1. Dormann, J. L., D'Orazio, F., Lucari, F., Tronc, E., Prené, P., Jolivet, J. P., Fiorani, D., Cherkaoui, R. and Noguès, M., Phys. Rev. B 53 (1996), 14291.

    Article  ADS  Google Scholar 

  2. Tronc, E., Ezzir, A., Cherkaoui, R., Chanéac, C., Noguès, M., Kachkachi, H., Fiorani, D., Testa, A. M., Greneche, J. M., Jolivet, J. P., J. Magn. Magn. Mat. 221 (2000), 63.

    Article  ADS  Google Scholar 

  3. Ayyub, P., Multani, M., Barma, M., Palkar, V. R. and Vijayaraghavan, R., J. Phys. C 21 (1988), 2245.

    Article  Google Scholar 

  4. Bødker, F. and Mørup, S., Europhys. Lett. 52 (2000), 217.

    Article  ADS  Google Scholar 

  5. Vandenberghe, R. E., De Grave, E., Landuydt, C. and Bowen, L. H., Hyp. Interact. 53 (1990), 175.

    Article  Google Scholar 

  6. Vandenberghe, R. E., Vanleerberghe, R. L. and Gryffroy, D., Phys Lett. A 101 (1984), 297.

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Departamento de Física, IFLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, C.C.67, 1900, La Plata, Argentina

    M. J. Tueros, L. A. Baum, R. A. Borzi, S. J. Stewart & R. C. Mercader

  2. Departamento de Química, Facultad de Ciencias Exactas, CINDECA (CONICET, CIC), 47 N○ 257, 1900, La Plata, Argentina

    S. G. Marchetti, J. F. Bengoa & L. V. Mogni

Authors
  1. M. J. Tueros
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  2. L. A. Baum
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  3. R. A. Borzi
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  4. S. J. Stewart
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  5. R. C. Mercader
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  6. S. G. Marchetti
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  7. J. F. Bengoa
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  8. L. V. Mogni
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Tueros, M.J., Baum, L.A., Borzi, R.A. et al. Characterization of Nanosized Maghemite Particles Prepared by Microemulsion Using an Ionic Surfactant. Hyperfine Interactions 148, 103–108 (2003). https://doi.org/10.1023/B:HYPE.0000003770.22742.e7

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  • DOI: https://doi.org/10.1023/B:HYPE.0000003770.22742.e7

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