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Low temperature Mössbauer studies on magnetic nanocomposites
K A Malini M R Anantharaman Ajay Gupta
Nanomaterials Volume 27 Issue 4 August 2004 pp 361-366
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https://www.ias.ac.in/article/fulltext/boms/027/04/0361-0366 -
Keywords
Magnetic nanocomposites ;Mössbauer spectroscopy ;ion exchange ;𝛾-Fe2O3 ;superparamagnetism. -
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.
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Author Affiliations
K A Malini1 M R Anantharaman1 Ajay Gupta2
- Department of Physics, Cochin University of Science and Technology, Cochin 682 022, India
- IUC-DAEF, Indore 452 017, India
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Dates
- Published
- August 2004
- Manuscript received
- 2 January 2004
- Manuscript revised
- 14 June 2004
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