Abstract
Among the many types of preparation and processing techniques, the nonconventional mechanochemical route has been recognized as a powerful method for the production of novel, high-performance, and low-cost nanomaterials. Because of their small constituent sizes and disordered structural state, nanoscale materials prepared by mechanochemical route are inherently unstable with respect to structural changes at elevated temperatures. Taking into account the considerable relevance of the thermal stability of nanoscale complex oxides to nanoscience and nanotechnology, in the present work, results on the response of mechanochemically prepared MgFe2O4 and NiFe2O4 to changes in temperature will be presented. Several interesting features are involved in the work, e.g., a relaxation of the mechanically induced cation distribution towards its equilibrium configuration, a disappearance of the superparamagnetism on heating, an increase of both the saturation magnetization and the Néel temperature with increasing particle size, and a core-shell structure of nanoparticles.
Similar content being viewed by others
References
C. Zhou, T. C. Schulthess and D. P. Landau, J. Appl. Phys., 99 (2006) 08H906.
Z. L. Wang, Y. Liu and Z. Zhang, Handbook of Nanophase and Nanostructured Materials, Vol. 3, Kluwer Academic/Plenum Publishers, New York 2002.
M. Sugimoto, J. Am. Ceram. Soc., 82 (1999) 269.
M. A. Willard, L. K. Kurihara, E. E. Carpenter, S. Calvin and V. G. Harris, Int. Mater. Rev., 49 (2004) 125.
U. Lüders, A. Barthélémy, M. Bibes, K. Bouzehouane, S. Fusil, E. Jacquet, J.-P. Contour, J.-F. Bobo, J. Fontcuberta and A. Fert, Adv. Mater., 18 (2006) 1733.
V. V. Boldyrev, Russ. Chem. Rev., 75 (2006) 177.
Y. T. Pavlyukhin, Y. Y. Medikov and V. V. Boldyrev, J. Solid State Chem., 53 (1984) 155.
V. Šepelák, D. Baabe, F. J. Litterst and K. D. Becker, J. Appl. Phys., 88 (2000) 5884.
V. Šepelák, I. Bergmann, S. Kipp and K. D. Becker, Z. Anorg. Allg. Chem., 631 (2005) 993.
E. Avvakumov, M. Senna and N. Kosova, Soft Mechanochemical Synthesis: A Basis for New Chemical Technologies, Kluwer Academic Publishers, Boston 2001.
V. Šepelák, U. Steinike, D. C. Uecker, S. Wissmann and K. D. Becker, J. Solid State Chem., 135 (1998) 52.
G. F. Goya, H. R. Rechenberg, M. Chen and W. B. Yelon, J. Appl. Phys., 87 (2000) 8005.
M. Muroi, R. Street, P. G. McCormick and J. Amighian, Phys. Rev. B, 63 (2001) 184414.
W. Kim and F. Saito, Powder Technol., 114 (2001) 12.
V. G. Harris, D. J. Fatemi, J. O. Cross, E. E. Carpenter, V. M. Browning, J. P. Kirkland, A. Mohan and G. J. Long, J. Appl. Phys., 94 (2003) 496.
N. Guigue-Millot, S. Begin-Colin, Y. Champion, M. J. Hytch, G. Le Caër and P. Perriat, J. Solid State Chem., 170 (2003) 30.
E. Manova, B. Kunev, D. Paneva, I. Mitov, L. Petrov, C. Estournès, C. D’Orléans, J.-L. Rehspringer and M. Kurmoo, Chem. Mater., 16 (2004) 5689.
S. K. Pradhan, S. Bid, M. Gateshki and V. Petkov, Mater. Chem. Phys., 93 (2005) 224.
P. Osmokrović, Č. Jovalekić, D. Manojlović and M. B. Pavlović, J. Optoelectron. Adv. Mater., 8 (2006) 312.
S. Dasgupta, K. B. Kim, J. Ellrich, J. Eckert and I. Manna, J. Alloys Compd., 424 (2006) 13.
V. Šepelák, A. Feldhoff, P. Heitjans, F. Krumeich, D. Menzel, F. J. Litterst, I. Bergmann and K. D. Becker, Chem. Mater., 18 (2006) 3057.
V. Šepelák, D. Baabe, D. Mienert, D. Schultze, F. Krumeich, F. J. Litterst and K. D. Becker, J. Magn. Magn. Mater., 257 (2003) 377.
V. Šepelák, U. Steinike, D. C. Uecker, R. Trettin, S. Wissmann and K. D. Becker, Solid State Ionics, 101–103 (1997) 1343.
V. Šepelák, M. Menzel, I. Bergmann, M. Wiebcke, F. Krumeich and K. D. Becker, J. Magn. Magn. Mater., 272–276 (2004) 1616.
V. Šepelák, I. Bergmann, A. Feldhoff, P. Heitjans, F. J. Litterst and K. D. Becker, Hyperfine Interact., 165 (2005) 81.
K. Lagarec and D. G. Rancourt, Recoil — Mösbauer Spectral Analysis Software for Windows, Version 1.02, Department of Physics, University of Ottawa, Ottawa, ON 1998.
G. A. Sawatzky, F. Van Der Woude and A. H. Morrish, Phys. Rev., 183 (1969) 383.
W. Kraus and G. Nolze, PowderCell for Windows, Version 2.4, Federal Institute for Materials Research and Testing, Berlin, Germany 2000.
H. St. C. O’Neill, H. Annersten and D. Virgo, Am. Miner., 77 (1992) 725.
M. George, A. M. John, S. S. Nair, P. A. Joy and M. R. Anantharaman, J. Magn. Magn. Mater., 302 (2006) 190.
Y. D. Zhang, S. H. Ge, H. Zhang, S. Hui, J. I. Budnick, W. A. Hines, M. J. Yacaman and M. Miki, J. Appl. Phys., 95 (2004) 7130.
K. Haneda and A. H. Morrish, J. Appl. Phys., 63 (1988) 4258.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Šepelák, V., Heitjans, P. & Becker, K.D. Nanoscale spinel ferrites prepared by mechanochemical route. J Therm Anal Calorim 90, 93–97 (2007). https://doi.org/10.1007/s10973-007-8481-1
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10973-007-8481-1