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Reseach Article
Study of Electrical and Magnetic Properties in Nano sized Ce-Gd Doped Magnesium Ferrite
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 27 - Number 5 |
| Year of Publication: 2011 |
| Authors: Vasant Naidu, S.K.A. Ahamed, Kandu Sahib, M.Suganthi, Chandra Prakash |
10.5120/3293-4496
|
Vasant Naidu, S.K.A. Ahamed, Kandu Sahib, M.Suganthi, Chandra Prakash . Study of Electrical and Magnetic Properties in Nano sized Ce-Gd Doped Magnesium Ferrite. International Journal of Computer Applications. 27, 5 ( August 2011), 40-45. DOI=10.5120/3293-4496
Abstract
Nano crystalline magnesium Cerium Gadolinium ferrite with general formula Mg Cex Gdy Fe2-x-y O4 (where x = 0.001, 0.012, 0.016, 0.018 and y=0.002) were prepared through sol-gel route from high purity nitrates of Magnesium (Mg), Cerium(Ce), Gadolinium(Gd) and Iron. The samples were sintered in microwave furnace and then characterized by XRD, EDAX, FTIR and SEM techniques. X-ray diffraction measurements confirmed the Nano size and formation of single phase cubic spinel structure of magnesium ferrite. It was found that the lattice constant decreases with the increase in Gd3+Ce3+ concentration and the crystalline size of the samples was lying in the range of 53.24 – 53.78 nm, which was confirmed from the SEM monographs. SEM studies show that the grain size of the samples decreases with the increase in Gd3+ Ce3+ content. The FTIR spectra shows two strong absorption bands within the frequency range of 362.59–570.89 cm−1. This concludes that Gd3+ , Ce3+ occupies B-site. Saturation magnetization of Gd3+ Ce3+ substituted Mg ferrites is higher than unsubstituted ferrite. The VSM studies confirm the magnetic behaviour and used to understand the electromagnetic properties of these nano materials. The permittivity studies show the decrease in relative permittivity of the material.
References
- A. Pradeep, P .Priyadharsini, G.Chandrasekaran., Sol-gel route of nano particles of MgFe2O4 and XRD,FTIR and VSM study, [J] Journal of Magn. Mag. Mater, 2008, 320, 2779.
- Ü.Özgür, Y.Alivov, and H.Morkoç, “Microwave Ferrites, Part 1: Fundamental Properties”, [J] J. Mater. Sci.: Materials in Electronics, 2009, 1-169.
- L.B Kong., et.al, Magneto-Dielectric Properties of Mg-Cu-Co Ferrite Ceramics: II Electrical, Dielectric, and Magnetic Properties, [J] J. Am. Ceram. Soc., 2007, 7, 2104-2112.
- E.Melagiriyappa, H.S Jayanna, B.K.Chougule., Dielectric behavior and ac electrical conductivity study of Sm3+ substituted Mg-Zn ferrites , [J] Journal of Materials Chemistry and Physics, 2008 , 112 , 68-73.
- Vasant Naidu..et.al , Magnetic properties of Nickel, Cerium doped Zinc ferrite, International Journal of Computer Applications (0975 – 8887),2011.
- Wilhelm Van Aulock (Ed.), [M] Handbook of microwaves ferrites Materials Academic Press,Newyork,London,1965.
- O.S. Josyulu, J. Shobanadri , [M] Phy. Status Sol. , 1980, 59, 323.
- V.R.K. Murthy, J.Shobanadri, [M] Phy.Status Sol., 1976, 36 , 133
- M.L. Khan and Z.J. Zhang, [J] Appl. Phys. Lett., 2001, 78, 3651.
- A.A Sattar.., et.al, Rare Earth Doping Effect on the Electrical Properties of Cu-Zn Ferrites, [J] J. Phys. IV France 1997, 7.
- K.T. Mathew and Raveendranath U. Nair, “Waveguide cavity perturbation method for measuring complex permittivity of water”, Microwave Opt. Technol. Lett., vol.6, No.2, pp. 104-106, 1993.
- B.D Cullity., [M] Elements of X-Ray Diffraction, Addison Wesley Pub. Co. Inc., London 1967, 96.
- B.R Karche., B.VKhasbardar., and Vaingankar A.S., X-ray, SEM and magnetic properties of Mg-Cd ferrites, [J] J. Magn. Magn.Mater., 1997,168,292.
- R.D Waldron., Infrared spectroscopy of ferrites, [J] Phy. Rev., 1955, 1727.
- O.M Hemeda., Effect of sintering on X-Ray and IR spectral behaviour of the MnAlxFe2-xO4 ferrite system, [J] J. Magn. Magn.Mater.,1996,156,1,29–38.
- M.Z Said., et.al , Structural, Electrical and Infrared Studies of Ni0.7 Cd0.3 Smx Fe2−x O4 Ferrite, [J] Turk J Phys 2007 , 31,41 – 50.
- R.V Upadhayay., et,.al ,Gd-substituted ferrite ferrofluid: a possible candidate to enhance pyro magnetic coefficient [J]J. Magn.Magn. Mater.,1999,201, 129.
- Smith.,Wijin.H.P.J,Ferrites, [M] Cleaver-Hume Press,1959.
- R.G Kulkarni., H Joshi., Comparison of magnetic properties of MgFe2O4 prepared by wet-chemical and ceramic methods, [J] Journal.Solid State Chem, 1986 ,64, 2, 141.
- V..R.K.Murthy,B.Viswanathan, [M] Ferrite Materials, Narosa Publishing House,1990.
- Ponpandian N, Balaya P and Narayanasamy A N 2002 J. Phys.: Condens. Matter 14 3221
- Chinnasamy C N, Narayanasamy A, Ponpandian N, Chattopadhyay K, Gueralt H and Greneche J M 2000 J. Phys. Condens. Matter 12 7795.
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