A study of nanosized magnesium ferrite particles with high magnetic moment
DSpace at IIT Bombay
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Title |
A study of nanosized magnesium ferrite particles with high magnetic moment
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Creator |
SUMANGALA, TP
MAHENDER, C VENKATARAMANI, N PRASAD, S |
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Subject |
CATION DISTRIBUTION
SOL-GEL NANOPARTICLES MGFE2O4 BEHAVIOR ROUTE FTIR Magnetic materials Nanostructures Sol-gel combustion synthesis X-ray diffraction Magnetisation coercivity Non-saturation Cation distribution |
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Description |
Nano-sized magnesium ferrite particles were prepared by sol gel combustion synthesis and were either furnace cooled or quenched after calcining at various temperatures ranging from 300 to 800 degrees C. A magnetisation value of 61 emu/g was obtained at 5 K for sample calcined at 800 degrees C and quenched in liquid nitrogen temperature. This is one of the highest reported values of magnetisation obtained from quenching at such a lower temperature. An estimate of the number of Fe3+ ions on A and B sites was made after applying Neel Model on the magnetisation values measured at 5 K. It was estimated that Fe3+ ions segregates out from both sites disproportionately so as to cause a net decrease in the overall moment. The resultant cation distribution is found to be consistent with the coercivity data. (C) 2015 Elsevier B.V. All rights reserved
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Publisher |
ELSEVIER SCIENCE BV
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Date |
2016-01-14T14:29:35Z
2016-01-14T14:29:35Z 2015 |
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Type |
Article
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Identifier |
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 382,225-232
0304-8853 1873-4766 http://dx.doi.org/10.1016/j.jmmm.2015.01.056 http://dspace.library.iitb.ac.in/jspui/handle/100/17729 |
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Language |
en
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