Thakur, Sangeeta and Katyal, S C and Gupta, A and Reddy, V R and Singh, M (2010) Characterization of magnetic nano materials by MÃ¶ssbauer spectroscopy. Journal of Physics: Conference Series, 217 (1). 012101.
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Official URL: http://stacks.iop.org/1742-6596/217/i=1/a=012101
The use of a non-destructive nuclear-physical method, namely 57 Fe MÃ¶ssbauer spectroscopy, is discussed for the investigation of magnetic and structural arrangement of Fe-based nano-crystalline nickel-zinc-indium ferrites (NZIFO). Nano NZIFO particles (Ni 0.58 Zn 0.42 In x Fe 2âx O 4 ) with varied quantities of indium (x = 0, 0.1, 0.2) have been chemically synthesized through a reverse micelle reaction and investigated by X-ray diffraction, transmission electron microscopy and by magnetic and MÃ¶ssbauer spectral studies. Here a comparison between low-temperature and room temperature MÃ¶ssbauer spectra is presented. Well defined sextets at 5 K provide information about the structure and magnetic states of atoms located in different structural positions. The dependence of MÃ¶ssbauer parameters, viz, isomer shift, quadrupole splitting, linewidth and hyperfine magnetic field on In 3+ concentration have been discussed. Detailed MÃ¶ssbauer results, as well as the interest of these materials both for applied science perspectives are presented. MÃ¶ssbauer results are also supported by magnetization data. With these interesting ferromagnetic properties Indium substituted nano nickel-zinc ferrites have potential applications in magnetic storage data.
|Deposited By:||Prof. Alexey Ivanov|
|Deposited On:||01 Nov 2011 23:29|
|Last Modified:||02 Nov 2011 00:47|
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