Study of the Effect of Cu2+ in the Lattice Dynamics of Doped Magnetites Obtained by the Hydrothermal Synthesis Method


In this work, the effect of Cu2+ on the structural and magnetic properties of samples of magnetite is addressed. Samples
of magnetite, both pure and Cu2+ doped, Fe3-xCuxO4, with x = 0, 5, 10 and 20 atm.% were synthesized hydrothermally. The two-lattice method was employed to measure the Mossbauer recoilless fraction of magnetite relative to hematite (fmag/fhem)
of the samples, looking for evidence of substitution of Fe2+ by Cu2+. The relative recoilless fraction measurements were performed by taking room temperature Mossbauer spectra of mixtures of each sample with analytical grade hematite. The Mossbauer measurements were complemented with Atomic Absorption Spectroscopy (AAS) and Energy Dispersive X-ray Spectroscopy (EDS). The analyses by AAS and EDS showed that the copper concentration in the final products
increases with increasing the content of Cu2+ in the starting solutions. The Mossbauer analyses showed a linear decrease trend of the relative Mossbauer recoilless fraction with increasing concentration of Cu2+in the samples, as well as a reduction in the hyperfine magnetic field, which was more significant in the octahedral sites than tetrahedral sites. The broadening of the Mossbauer spectral lines was more significant for the octahedral sub spectrum than for the tetrahedral sub spectrum. Our study points that Cu2+ occupies preferentially the octahedral sites, where it substitutes Fe2+ species, generating broadening in the lines of the octahedral sub spectrum and a reduction in the probability of having nuclear resonant absorption of Mossbauer gamma rays in the samples.

Share and Cite:

A. Velásquez and J. Urquijo, "Study of the Effect of Cu2+ in the Lattice Dynamics of Doped Magnetites Obtained by the Hydrothermal Synthesis Method," Spectral Analysis Review, Vol. 1 No. 2, 2013, pp. 11-17. doi: 10.4236/sar.2013.12002.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] D. Guin and S. V. Manorama, “Room Temperature Synthesis of Monodispersed Iron Oxide Nanoparticles,” Materials Letters, Vol. 62, No. 17-18, 2008, pp. 3139-3142.
[2] A. A. Novakova, V. Yu. Lanchinskaya, A. V. Volkov, T. S. Gendler, T. Yu. Kiselva, M. A. Moskvina and S. B. Zezin, “Magnetic Properties of Polymer Nanocomposites Containing Iron Oxide Nanoparticles,” Journal of Magnetism and Magnetic Materials, Vol. 258-259, 2003, pp. 354-357.
[3] C. C. Berry and A. S. G. Curtis, “Functionalisation of Magnetic Nanoparticles for Applications in Biomedicine,” Journal of Physics D: Applied Physics, Vol. 36, No. 13, 2003, pp. 198-206.
[4] P. Tartaj, M. del P. Morales, S. Veintemillas-Verdaguer, T. González-Carre?o and C. J. Serna, “The Preparation of Magnetic Nanoparticles for Applications in Biomedicine,” Journal of Physics D: Applied Physics, Vol. 36, No. 13, 2003, pp. 182-197.
[5] K. E. García, A. L. Morales, C. A. Barrero and J. M. Greneche, “New Contributions to the Understanding of Rust Layer Formation in Steels Exposed to a Total Immersion Test,” Corrosion Science, Vol. 48, No. 9, 2006, pp. 2813-2830.
[6] Y. Y. Chen, H. J. Tzeng, L. I. Wei, L. H. Wang, J. C. Oung and H. C. Shih, “Properties of Low-Alloy Steels Under Atmospheric Conditions,” Corrosion Science, Vol. 47, No. 4, 2005, pp. 1001-1021.
[7] T. Furubayashi, “Magnetite Films Prepared by Reactive Evaporation,” Journal of Magnetism and Magnetic Materials, Vol. 272-276, 2004, pp. E781-E783
[8] G. Zhang, C. Fan, L. Pan, F. Wang, P. Wu, H. Qiu, Y. Gu and Y. Zhang, “Magnetic and Transport Properties of Magnetite Thin Films,” Journal of Magnetism and Magnetic Materials, Vol. 293, No. 2, 2005, pp. 737-745.
[9] X. Hu, M. Xu, X. Cui and S. Zhang, “Room-Temperature Magnetore-sistance Effects of Ag-Added Fe3O4 Films with Single-Domain Grains,” Solid State Communications, Vol. 142, No. 10, 2007, pp. 595-599.
[10] P. S. Sidhu, R. J. Gilkes and A. M. Posner, “The Synthesis and Some Properties of Co, Ni, Zn, Cu, Mn and Cd Substituted Magnetites,” Journal of Inorganic and Nuclear Chemistry, Vol. 40, No. 3, 1978, pp. 429-435.
[11] T. Ishikawa, H. Nakazaki, A. Yasukawa, K. Kandori and M. Seto, “Influences of Co2+, Cu2+ and Cr3+ Ions on the Formation of Magnetite,” Corrosion Science, Vol. 41, No. 8, 1999, pp. 1665-1680.
[12] T. Ishikawa, M. Kumagai, A. Yasukawa, K. Kandori, T. Nakayama and F. Yuse, “Influences of Metal Ions on the Formation of FeOOH and Magnetite Rusts,” Corrosion Science, Vol. 44, No. 5, 2002, pp. 1073-1086.
[13] M. Sorescu, T. Oberst, K. Gosset, D. Tarabasanu and L. Diaman-descu, “Direct Evidence for Cobalt Substitution Effects in Magnetite,” Solid State Communications, Vol. 113, No. 10, 2000, pp. 573-575.
[14] M. Sorescu, T. Oberst, K. Gosset, D. Tarabasanu and L. Diaman-descu, “Population Effects in Cobalt-Substituted Magnetite,” Materials Letters, Vol. 44, No. 2, 2000, pp. 110-112.
[15] M. Sorescu, “Recoilless Fraction of Cobalt-Doped Magnetite,” Nuclear Instruments and Methods in Physics Research Section B, Vol. 269, No. 6, 2011, pp. 590-596.
[16] K. J. Kim, J. H. Lee and S. H. Lee, “Magneto-Optical Investigation of Spinel Ferrite CuFe2O4: Observation of Jahn-Teller Effect in Cu2p Ion,” Journal of Magnetism and Magnetic Materials, Vol. 279, No. 2-3, 2004, pp. 173-177.
[17] A. L. Morales, A. A. Velásquez, J. P. Urquijo and E. Baggio, “Synthesis and Characterization of Cu2+ Substituted Magnetite,” Hyperfine Interactions, Vol. 203, No. 1-3, 2011, pp. 75-84.
[18] R. M. Cor-nell and U. Schwertmann, “The Iron Oxides,” Wiley-VCH, Weinheim, 1996.
[19] L. May, “An Introduction to M?ssbauer Spectroscopy,” Plenum Press, New York, 1971.
[20] M. Sorescu, “Determination of the Recoilless Fraction in Iron Oxide Nano-particles Using the Two-Lattice Method,” Journal of Nano-particle Research, Vol. 4, No. 3, 2002, pp. 221-224.
[21] R. Vanden-berghe, E. de Grave and P. M. A. de Bakker, “On the Methodology of the Analysis of M?ssbauer Spectra,” Hyperfine Interactions, Vol. 83, No. 1, 1994, pp. 29-49.
[22] I. Nedkov, R. E. Vandenberghe, T. Marinova, P. Thailhades, T. Merodiiska and I. Avramova, “Magnetic Structure and Collective Jahn-Teller Distortions in Nanostructured Particles of CuFe2O4,” Applied Surface Science, Vol. 253, No. 5, 2006, pp. 2589-2596.

Copyright © 2023 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.