Dielectric Studies of Double Sintered Lithium Zinc Nickel Ferrite Prepared by Citrate Precursor Method

Ibetombi Soibam^1, , N Nilima² and S Phanjoubam²

¹Department of BS&H (Physics), NIT Manipur, Takyel, Imphal, India

²Department of Physics, Manipur University, Canchipur, Imphal, India

Cite this paper:
Ibetombi Soibam, N Nilima and S Phanjoubam. Dielectric Studies of Double Sintered Lithium Zinc Nickel Ferrite Prepared by Citrate Precursor Method. American Journal of Materials Science and Engineering. 2014; 2(2):24-27. doi: 10.12691/ajmse-2-2-3

Abstract

Ni substituted Li-Zn ferrites with compositional formula Li_0.4-0.5xZn_0.2Ni_xFe_2.4-0.5xO₄ where 0.02 ≤ x ≤ 0.1 in steps of 0.02 was fabricated by using citrate precursor method. X-ray diffraction was used to confirm the spinel phase. The dielectric constant was investigated as a function of composition, frequency and temperature. Room temperature dielectric constant showed a decrease with addition of Ni²⁺ ions. It was explained in terms of space charge polarization and koops two layer model. The variation in dielectric constant with frequency showed dispersion. Variation of dielectric constant with temperature was studied at different frequencies and an increase was observed as temperature rises. The possible mechanisms responsible for the above behavior are explained.

Keywords:
lithium ferrites citrate precursor XRD lattice parameter dielectric constant SEM

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References:

[1]	Berry CC and Curtis, J Phys D: Appl. Phys, 36, R198, 2003.
[2]	K. Vijaya Kumar, D.Paramesh, P. Venkat Reddy, M. Buchi Suresh, International Journal of Engineering & Technology Research, 1, 153, 2013.
[3]	Leena Jaswal, Brijesh Singh, J. Integr. Sci. Technol., 2(2), 69, 2014.
[4]	V. Verma, V. Pandey, R.K. Kotnala, H. Kisan, N. Kumar, P.C. Kothari, J. Alloys Compd. 443, 178, (2007).
[5]	C Sun, K Sun, Solid State Commun.,141, 258, 2007.
[6]	G S Gopalakrishna, MJ Mahesh, KG Ashamanjari, MS Bhargava Ramu, Milina K, Ind. J. Phys., 84, 143, 2010.
[7]	Z. Yue, J. Zhou, X.Wang, Z. Gui, L. Li, J. Eur. Ceram. Soc., 23, 189, 2003.
[8]	X. Qi, J. Zhou, Z. Yue, Z. Gui, L. Li, J. Magn. Magn. Mater., 251, 316, 2002.
[9]	C. Cannas, A. falqui, A. Musinu, D. Peddis, G. Piccaluga, J. Nano. Res., 8, 55, 2006.
[10]	I Soibam, S Phanjoubam, C Prakash, J. Alloys Compd., 475, 328, 2009.
[11]	I Soibam, S Phanjoubam, H B Sharma, H N K Sarma and C Prakash, Ind. J. Phys., 83, 285, 2009.
[12]	J Smit, HPJ Wijn, Ferrites (Philips Technical Library) Eindhoven, Netherland, 1959.
[13]	AA Sattar, HM El-Sayed, WR Agami, AA Ghani, Am. J. Appl. Sci., 4, 89, 2007.
[14]	B T Naughton, David R Clarke, J. Am. Ceram. Soc., 90, 3541, 2007.
[15]	EJW Verwey and JH De Boer, Recl. Trav. Chim. Pays. Bass, 55, 331, 1936.
[16]	EJW Verwey, PW Haayman and FC Romeijn J.Chem.Phys., 15, 181, 1947.
[17]	S Chongtham, S. Phanjoubam, H.N.K. Sarma, R. Laishram, C. Prakash, Mod. Phys. Lett. B, 19, 899, 2005.
[18]	M B Reddy, P.V. Reddy, Appl. Phys. (UK), 24, 975, 1991.
[19]	AM Saikh, S.S. Bellad, B.K. Chougule, J. Magn. Magn. Mater., 195, 384, 1999.
[20]	AK Singh, TC Goel, RG Mendiratta, J.Appl. Phys., 91, 6626, 2002.