A polycrystalline orthorhombic compound of Li0.5Bi0.5Ti0.8Zr0.2O3 is synthesized by using a high temperature solid-state reaction technique at
high temperature (i.e., at 900℃).
The room temperature X-ray diffraction study assured the evolution of
single-phase compound with orthorhombic structure. The dielectric analysis of
Li0.5Bi0.5Ti0.95Zr0.05O3 explored over a broad frequency range (103 - 106 Hz) at various temperatures (33℃ - 500℃) displayed that the dielectric properties of
the material are dependent on both frequency and temperature. Dielectric study
reveals that the ferro to paraelectric phase transition of the studied compound
is a temperature of 112℃.
The nature of the variation of conductivity and value of activation energy in
different regions, calculated from the temperature dependence of ac
conductivity suggest that the conduction process is of mixed type (i.e., ionic–polaronic and space charge
generated from the oxygen ion vacancies).
Cite this paper
Panda, D. , Mohanty, B. B. , Sahoo, P. S. and Choudhary, R. N. P. (2019). Structural and Dielectric Properties of Li0.5Bi0.5Ti0.8Zr0.2O3 Ceramics. Open Access Library Journal, 6, e5563. doi: http://dx.doi.org/10.4236/oalib.1105563.
Ramirez, M.O., Jaque, D., Bausa, L.E., Sole Garci, J. and Kaminskii, A.A. (2005) Near In-fraredand Visible Tunability from a Diode Pumped Nd Activated Strontium Barium Niobate Laser Crystal. Physical Review Letters, 95, Article ID: 267401.
Rao, K.S. and Nath, N.V. (2005) Influence of Rare-Earth Ion on Piezoelectric and Pyroelectric Properties of PBN System. Ferroelectrics, 325, 15-24. https://doi.org/10.1080/00150190500326605
Jiang, W., Cao, W., Yi, X. and Chen, H. (2005) The Elastic and Piezoelectric Properties of Tungsten Bronze Ferroelectric Crystals (Sr0.7Ba0.3)2NaNb5O15 and (Sr0.3Ba0.7)2NaNb5O15. Journal of Applied Physics, 97, Article ID: 094106. https://doi.org/10.1063/1.1881777
Raju, M.R. and Choudhary, R.N.P. (2006) Effect of Zr Substitution on Structural, Dielectric and Electrical Properties of Sr5SmTi3Nb7O30 Ce-ramics. Materials Chemistry and Physics, 99, 135-143. https://doi.org/10.1016/j.matchemphys.2005.09.084
Chen, W., Kine-muchi, Y., Watari, K., Tamura, T. and Miwa, K. (2006) Preparation of Grain‐Oriented Sr0.5Ba0.5Nb2O6 Ferroelectric Ceramics by Magnetic Alignment. Journal of the American Ceramic Society, 89, 381-384. https://doi.org/10.1111/j.1551-2916.2005.00694.x
Wu, E. (1989) POWD, an Interactive Powder Diffraction Data Interpretation and Index Program. Ver.2.1. School of Physical Science, Flinders University South Bedford Park, Austral-ia.
Geiss, E.A., Scott, B.A., Burns, G., O’Kane, D.F. and Segmuller, A. (1969) Alkali Strontium-Barium-Lead Niobate Systems with a Tungsten Bronze Structure: Crystallographic Properties and Curie Points. Journal of the American Ceramic Society, 52, 276-281. https://doi.org/10.1111/j.1151-2916.1969.tb09183.x
Dash, S., Choudhary, R.N.P. and Kumar, A. (2014) Impedance Spectroscopy and Conduction Mechanism of Multiferroic (Bi0.6K0.4)(Fe0.6Nb0.4)O3. Journal of Physics and Chemistry of Solids, 75, 1376-1382. https://doi.org/10.1016/j.jpcs.2014.07.018
Singh, A.K., Barik, S.K., Choudhary, R.N.P. and Mahapatra, P.K. (2009) Ac Con-ductivity and Relaxation Mechanism in Ba0.9Sr0.1TiO3. Journal of Alloys and Compounds, 479, 39-42. https://doi.org/10.1016/j.jallcom.2008.12.130
