Abstract
Nanocomposites with magnetic components possessing nanometric dimensions, lying in the range 1–10 nm, are found to be exhibiting superior physical properties with respect to their coarser sized counterparts. Magnetic nanocomposites based on gamma iron oxide embedded in a polymer matrix have been prepared and characterized. The behaviour of these samples at low temperatures have been studied using Mössbauer spectroscopy. Mössbauer studies indicate that the composites consist of very fine particles of γ-Fe2O3 of which some amount exists in the superparamagnetic phase. The cycling of the preparative conditions were found to increase the amount of γ-Fe2O3 in the matrix.
Similar content being viewed by others
References
Ambrose T, Gavrin A and Chien C L 1992J. Mag. Mag. Mater. 116 L311
Amulyavichus A P and Suzdalev I P 1973Sov. Phys. JETP 37 859
Bean C P 1955J. Appl. Phys. 26 1381
Bean C P and Livingstone J D 1959J. Appl. Phys. 30 120
Chakravorty D 1992Bull. Mater. Sci. 15 411
Chatterjee A, Das D, Chakravorty D and Choudhury K 1990Appl. Phys. Lett. 57 1360
Dagani R 1992Nanostructured materials promise to advance range of technologies, science/technology (American Chemical Society: Chemical and Engineering News) pp 18–24
Daniels J M and Rosencwaig A 1970Canadian J. Phys. 48 380
Gonser U, Weidersich H and Grant R W 1998J. Appl. Phys. 39 1004
Hartridge A, Bhattacharya A K, Majumdar C K, Das D and Chintalapudi S N 1998J. Mag. Mag. Mater. 183 L1
Hsu Jen-Hwa and Huang Yi-Hong 1995J. Mag. Mag. Mater. 140–144 405
Lee J G, Park J Y and Kim C S 1998J. Mater. Sci. 33 3965
Lukehart C M, Milne S B, Stock S R, Shull R D and Witting J E 1995Mater. Sci. Engg. A204 176
Malini K A, Anantharaman M R, Sindhu S, Chinnasamy C N, Ponpandian N, Narayanasamy A, Balachandran M and Siva-sankara Pillai V N 2001J. Mater. Sci. 36 821
Morup S 1994Europhys. Letts 28 671
Morup S, Madsen M B, Franck J, Villadsen J and Koch C J W 1983J. Mag. Mag. Mater. 40 163
Morup S, Oxborrow C A, Hendriksen P V, Pedersen M S, Hanson M and Johansson C 1995J. Mag. Mag. Mater. 140–144 409
Ping W J and Lie L H 1994J. Mag. Mag. Mater. 131 54
Pierce D T, Celotta R J, Unguris J and Seigmann H C 1982Phys. Rev. B26 2566
Roy S, Das D and Chakravorty D 1993J. Appl. Phys. 74 474
Sawatzky G A, Vander Woude F and Morrish A H 1969Phys. Rev. 187 747
Shull R D and Bennet L H 1992J. Nanostruct. Mater. 1 83
Shull R D, Ritter J J, Shapiro A J, Swartzendruder L J and Ben-net L H 1990J. Appl. Phys. 67 4490
Shull R D, Ritter J J, Shapiro A J, Swartzendruder L J and Bennet L H 1991MRS symposium proc. (Materials Research Society)206 455
Vassiliou J K, Mehrotra V, Russell M W, Giannelis E P, Mcmicheal R D, Shull R D and Ziolo R F 1993J. Appl. Phys. 73 5109
Ziolo R F, Giannelis E P, Weinstein B A, Michela P, O’Horo, Ganguly B N, Mehrotra V, Russel M W and Huffman D R 1992Science 257 219
Ziolo R F, Giannelis E P and Shull R D 1993Nanostruct. Mater. 3 95
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Malini, K.A., Anantharaman, M.R. & Gupta, A. Low temperature Mössbauer studies on magnetic nanocomposites. Bull Mater Sci 27, 361–366 (2004). https://doi.org/10.1007/BF02704773
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02704773