Anomalous Behavior of Chemically Synthesized Magnetoplumbite Strontium Ferrite Nano Particles

Abstract:

Strontium hexa-ferrite nanoparticles were prepared successfully by simple co-precipitation method. The XRD analysis confirmed the formation of single phase MFe₁₂O₁₉ (M=Sr). Parameters such as crystallite size, lattice constant, X-ray density and porosity were calculated from the X-ray diffraction data. The crystallite sizes were in the range 12-26 nm. The temperature dependent dc electrical resistivity measurements showed that the material was highly. Dielectric constant and dielectric loss factor (tanδ) were measured in the frequency range 20Hz-3MHz. The anomalous behavior of dielectric loss revealed a very important behavior of the prepared sample of SrFe₁₂O₁₉ in different frequency regions and that could be used for new applications of this material. The magnetic properties were determined from the hystersis loop obtained from vibrating sample magnetometer (VSM). The Curie temperature was determined by susceptometer. This material is potentially suitable for use as a recording medium in identification cards and credit cards and for the fabrication of permanent magnets.

• Periodical: Key Engineering Materials (Volumes 510-511)
• Pages: 330-334
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.510-511.330
• Online since: May 2012
• Authors: G. Asghar, S. Nasir, M.S. Awan, G.H. Tariq, Muhammad Anis-ur-Rehman
• Keywords: Coercivity, Dielectric Constant, Dielectric Loss Factor, Resistivity, Space Charge Polarization

References

[1] H. Kojima, Ferromagnetic Materials vol 3, ed E P Wohlfarth (Amsterdam: North-Holland, p.305, 1982).

[2] A. Thakur, P. Mathur, M. Singh, J. Phys. Chem. Solids Vol. 68 (2007), P. 378.

[3] A. Thakur, M. Singh, Ceram. Int. Vol. 29 (2003), p.505.

[4] A. Davoodi, B. Hashemi, J. Alloys Compd. 509 (2011), p.5893.

[5] C.L. Yuan, Y.S. Hong, C.H. Lin, J. Magn. Magn. Mater. 323 (2011), p.1851.

[6] J. Jiang, L.H. Ai, J. Alloy Compd. 502 (2010), p.488.

[7] B.D. Cullity, Introduction to Magnetic Materials (Addison-Wesley, New York, 1972).

[8] C.G. Koops, Phys. Rev. Vol. 83 (1951), p.121.

[9] G.G. Raju, Dielectrics in Electric Fields (Power Engineering, 19).

[10] H. Neuman and G. Arlt, Ferroelectrics, Vol. 69, (1986), p.179.

[11] K. Awanchi, J. Appl. Phys Vol. 10 (1971), p.1520.

[12] J.C. Papioannou, G. S. Patermarakis, H. S. Karayianni, J. Phys. Chem. Solids Vol. 66 (2005), p.839.

[13] B. Kaur, M. Bhat, F. Licci, R. Kumar, K. K. Bamzai and P. N. Kotru, J. Mater. Chem. Phys. Vol. 103 (2007) p.255.

[14] A. Ataie, S. Heshmati Manesh, J. Eur. Ceram. Soc. Vol. 21 (2001), p. (1951).

[15] X.H. Wang, L. Li, Z. Gui, S. Shu, J. Zhou, Mater. Chem. Phys. Vol. 77 (2002), p.248.

[16] E.C. Stoner, E.P. Wohlfarth, Philos. Trans. R. Soc. London Vol. A 240 (1948), p.599.