Abstract
Pure and doped nano-Li-ferrite spinels were prepared by the sol–gel auto-combustion technique. The prepared ferrites were pelleted and heat treated at different temperatures. Structural characterization was carried out on the as-prepared samples and also on the heat-treated samples using X-ray diffraction (XRD). The studies confirmed the formation of single phase with spinel structures in all the samples. The crystallite size of the samples evaluated from XRD data was found to be 17–24 nm. Scanning electron microscopic photomicrographs revealed the microstructures and the grain size of these nanoferrites. The room-temperature dielectric constant and dielectric loss tangent, tan δ were measured as a function of frequency in the range 100 Hz–1 MHz. These nanoferrites showed the normal dielectric dispersion behaviour. The observed dielectric constant and dielectric loss tangent were found to be much lower than those measured on substituted Li-ferrites prepared by the conventional ceramic method. The results obtained were discussed in the paper.
Similar content being viewed by others
References
Smith J and Wijn H P J 1959 Ferrites (London: Cleave-Hume Press Ltd.)
Argentina G M and Baba P D 1974 IEEE Trans. Microwave Theory Tech. MTT-22 652
Bandhyopadhyay G and Fulrath R M 1974 J. Am. Ceram. Soc. 57 182
Baba P D, Argentina G M, Courtney W E, Dionne G F and Temme D H 1972 IEEE Trans. Magn. MAG-8 83
Kishan P 1993 Microwave materials (New Delhi, India: Narosa Publishing House)
Cho Y S, Burdick V L and Amarakoon V R W 1999 J. Am. Ceram. Soc. 82 1416
Verma A, Goel T C and Mendiratta R G 2000 Mater. Sci. Technol. 16 712
Pathan T and Shaikh A M 2012 Eur. J. Appl. Eng. Sci. Res. 1 173
Sutradhar S, Pati S, Acharya S, Das S and Chakrabarti P K 2012 J. Magn. Magn. 324 1317
Waluyo N S, Almajid A A and Soliman M A 2012 Adv. Mater. Res. 463 1468
Gee S H, Hong Y K, Park M H, Erickson D W and Lamb P J 2002 J. Appl. Phys. 91 7586
Murthy S R 2001 Bull. Mater. Sci. 24 379
Ali A Z, Abdeltwab E and Abbas Y 2009 J. Ovonic Res. 5 157
Maaz K, Karim S, Mumtaz A, Hasanain S K, Liu J and Duan J L 2009 J. Magn. Magn. 321 1838
Soohoo R F 1960 Theory and application of ferrites (New Jersey: Prentice Hall)
Ridgley D H, Lessoff H and Childress J D 1970 J. Am. Ceram. Soc. 6 304
Jacob P, Kumar A, Pant R P, Singh S and Mohammed E M 2011 Bull. Mater. Sci. 34 1345
George M, Nair S S, John A M, Joy P A and Anantharaman M R 2006 J. Phys. D: Appl. Phys. 39 900
Kishan P, Chatterjee S N, Nagpaul L K and Laroia K K 1981 Ind. J. Pure Appl. Phys. 19 83
Wagner K W 1913 Ann. Phys. 40 817
Koops G 1951 Phys. Rev. 83 121
Watawe S C, Sarwade B D, Bellad S S, Sutar B D and Chougule B K 2000 J. Magn. Magn. 214 55
Maisnam M, Phanjoubam S, Sarma H N K, Thakur O P, Devi L R and Prakash C 2003 Int. J. Mod. Phys. B 17 3881
Nasir S and Anis-ur Rehman M 2011 Phys. Scr. 84 1
Raman R and Murthy V R K 1991 J. Appl. Phys. 69 4053
Dar M A, Verma V, Gairola S P, Siddiqui W A, Singh R K and Kotnala R K 2012 Appl. Surf. Sci. 258 5342
Mansour S F and Elkestawy M A 2011 Ceram. Int. 37 1175
Iwauchi K 1971 Jpn. J. Appl. Phys. 10 1520
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
MAISNAM, M., NILIMA, N., VICTORY, M. et al. Low dielectric loss in nano-Li-ferrite spinels prepared by sol–gel auto-combustion technique. Bull Mater Sci 39, 249–254 (2016). https://doi.org/10.1007/s12034-015-1112-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12034-015-1112-8