MSA  Vol.3 No.3 , March 2012
Synthesis and Electrical Analysis of Ba5GdTi3V7O30 Ceramics
ABSTRACT
A polycrystalline sample of Ba5GdTi3V7O30 was prepared using a mixed oxide method at high temperature (i.e., at 950℃). The formation of single-phase compound with orthorhombic structure at room temperature was confirmed from preliminary X-ray diffraction study. Detailed studies of dielectric properties of Ba5GdTi3V7O30, investigated in a wide frequency range (102 - 106 Hz) at different temperatures (33℃ - 500℃) showed that these properties of the material are strongly dependent on frequency and temperature. The existence a dielectric anomaly suggests that the compound has a transition temperature at ~385℃. The nature of the variation of conductivity and value of activation energy in different regions, calculated from the temperature dependence of ac conductivity (dielectric data) suggest that the conduction process is of mixed type (i.e., ionic-polaronic and space charge generated from the oxygen ion vacancies). The ac conductivity spectrum obeys Jonscher’s universal power law.

Cite this paper
B. Mohanty, P. Sahoo, M. Sahoo and R. Choudhary, "Synthesis and Electrical Analysis of Ba5GdTi3V7O30 Ceramics," Materials Sciences and Applications, Vol. 3 No. 3, 2012, pp. 173-178. doi: 10.4236/msa.2012.33027.
References
[1]   L. X. Zhang, W. Chen and X. Ren, “Large Recoverable Electrostrain in Mn-Doped (Ba,Sr) TiO3 Ceramics,” Applied Physics Letters, Vol. 85, No. 23, 2004, pp. 5658-5660. doi:10.1063/1.1829394

[2]   W. L. She, K. K. Lee and W. K. Lee, “All Optical Quasi-Steady-State Photorefractive Spatial Solitons,” Physical Review Letters, Vol. 85, No. 12, 2000, pp. 2498-2501. doi:10.1103/PhysRevLett.85.2498

[3]   M. E. Lines and A. M. Glass, “Principles and Applications of Ferroelectric and Related materials,” Clarendon Press, Oxford, 1977.

[4]   B. Jaffe, W. R. Cook and H. Jaffe, “Piezoelectric Ceramics,” Academic Press, London, 1971.

[5]   K. Uchino, “Piezoelectric Actuators and Ultrasonic Motors,” Kluwer Academics, Boston, 1997.

[6]   R. R. Neurgaonkar, M. H. Kalisher, T. C. Lim, E. J. Staples and K. L. Keester, “Czochralski Single Crystal Growth of Sr.61Ba.39Nb2O6 for Surface Acoustic Wave Applications,” Materials Research Bulletin, Vol. 15, No. 9, 1980, pp. 1235-1240. doi:10.1016/0025-5408(80)90025-2

[7]   W. Sakamoto, Y.-S. Horie, T. Yogo and S.-I. Hirano, “Synthesis and Properties of Highly Oriented (Sr, Ba)(Nb, Ta)2O6 Thin Films by Chemical Solution Deposition,” Japanese Journal of Applied Physics, Vol. 40, 2001, pp. 5599-5604. doi:10.1143/JJAP.40.5599

[8]   P. Ganguly and A. K. Jha, “Investigations of Dielectric, Pyroelectric and Electrical Properties of Ba5SmTi3Nb7O30 Ferroelectric Ceramic,” Journal of Alloys and Compounds, Vol. 484, No. 1-2, 2009, pp. 40-44. doi:10.1016/j.jallcom.2009.05.034

[9]   M. R. Ranga Raju, R. N. P. Choudhary and S. Ram, “Dielectric and Electrical Properties of Sr5EuCr3Nb7O30 Nanoceramics Prepared Using a Novel Chemical Route,” Physica Status Solidi (b), Vol. 239, No. 2, 2003, pp. 480-489. doi:10.1002/pssb.200301832

[10]   P. V. Bijumon, V. Kohli, Om Parkash, M. R. Varma and M. T. Sebastian, “Dielectric Properties of Ba5MTi3A7O30 [M = Ce, Pr, Nd, Sm, Gd, Dy and Bi; A = Nb, Ta] Ceramics,” Materials Science and Engineering: B, Vol. 113, No. 1, 2004, pp. 13-18. doi:10.1016/j.mseb.2004.05.023

[11]   M. R. Ranga Raju and R. N. P. Choudhary, “Structural, Dielectric and Electrical Properties of Sr5RTi3Nb7O30 (R = Gd and Dy) Ceramics,” Materials Letters, Vol. 57, No. 19, 2003, pp. 2980-2987. doi:10.1016/S0167-577X(02)01408-8

[12]   H. Zhang, Z. Q. Liu, C. L. Diao R. Z. Yuan and L. Fang, “Structural and Dielectric Properties of Sr4Ln2Ti4Ta6O30 (Ln = Nd and Sm) Ceramics,” Materials Letters, Vol. 59, No. 21, 2005, pp. 2634-2637. doi:10.1016/j.matlet.2005.04.006

[13]   X. H. Zheng and X. H. Zhou, “Crystal Structure and Di- electric Properties of La3+ Substituted Ba5LaTi3Ta7O30 Ceramics,” Journal of Materials Science: Materials in Electronics, Vol. 17, No. 12, 2006, pp. 987-991. doi:10.1007/s10854-006-9007-5

[14]   L. Fang, H. Zhang, J. F. Yang, X. K. Hong and F. C. Meng, “Preparation, Characterization and Dielectric Properties of Sr5LnTi3Ta7O30 (Ln = La, Nd) Ceramics,” Journal of Materials Science: Materials in Electronics, Vol. 15, No. 6, 2004, pp. 355-357. doi:10.1023/B:JMSE.0000025677.53710.c8

[15]   E. Wu, POWD, An Interactive Powder Diffraction Data Interpretation and Indexing Program, Version 2.1 (School of Physical Sciences, Flinders University South Bedford Park), SA 5042 Australia.

[16]   P. S. Sahoo, A. Panigrahi, S. K. Patri and R. N. P. Choudhary, “Structural, Dielectric, Electrical and Piezoelectric Properties of Ba4SrRTi3V7O30 (R = Sm, Dy) Ceramics,” Central European Journal of Physics, Vol. 6, No. 4, 2008, pp. 843-848. doi:10.2478/s11534-008-0112-3

[17]   P. S. Sahoo, A. Panigrahi, S. K. Patri and R. N. P. Choudhary, “Ferroelectric Phase Transition in Ba4SrSmTi3V7O30 Ceramics,” Materials Letters, Vol. 63, No. 11, 2009, pp. 864-866. doi:10.1016/j.matlet.2009.01.053

[18]   H. P. Klug and L. E. Alexander, “X-ray Diffraction Procedures for Polycrystalline and Amorphous Materials,” Willey-Interscience, New York, 1974.

[19]   P. S. Sahoo, A. Panigrahi, S. K. Patri and R. N. P. Choudhary, “Structural and Impedance Properties of Ba5DyTi3V7O30,” Journal of Materials Science: Materials in Electronics, Vol. 20, No. 6, 2009, pp. 565-569. doi:10.1007/s10854-008-9766-2

[20]   P. S. Sahoo, A. Panigrahi, S. K. Patri and R. N. P. Choudhary, “Structural and Electrical Properties of Ba5SmTi3V7O30 Ceramics,” Journal of Materials Science: Materials in Electronics, Vol. 21, No. 1, 2010, pp. 160-167. doi:10.1007/s10854-009-9887-2

[21]   R Clarke and D Siapkas, “Temperature-Dependent Raman Spectra of Ferroelectric Potassium Strontium Niobate,” Journal of Physics C: Solid State Physics, Vol. 8, No. 3, 1975, pp. 377-379. doi:10.1088/0022-3719/8/3/016

[22]   R. Williams, “Surface Layer and Decay of the Switching Properties of Barium Titanate,” Journal of Physics and Chemistry of Solids, Vol. 26, No. 2, 1965, pp. 399-405. doi:10.1016/0022-3697(65)90169-1

[23]   A. S. Bhalla, R. Guo, L. E. Cross, G. Burns, F. H. Dacol, and R. R. Neurgaonkar, “Glassy Polarization in the Ferro- electric Tungsten Bronze (Ba, Sr)Nb2O6,” Journal of Applied Physics, Vol. 71, No. 11, 1992, pp. 5591-5595. doi:10.1063/1.350537

 
 
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