Back
 MSA  Vol.9 No.1 , January 2018
Study of Structural and Dielectrical Properties of Lead Free Polycrystalline Electro Ceramics Ba5CaTi2Nb8O30 (BCTN) for Microwave Tunable Device Applications
Abstract: Tungsten bronze structure ceramics have found vital potential in many applications such as actuators, transducer, electro-optic, ferroelectric random access memory and microwave devices. These type ceramics are extensively used in many industrial applications due to their spontaneous polarization and well-known for its high dielectric constant, low dielectric loss, low leakage current density, good thermal stability and high piezoelectric coefficient. In present work, Ba5CaTi2Nb8O30 (BCTN) has been synthesized first time through solid state reaction method. The microstructures, dielectric, ferroelectric, ferromagnetic and Raman spectra have been investigated by means of X-ray diffraction, Scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), LCR meter, P-E loop tracer, VSM and Raman spectrometer respectively. X-ray dif-fraction study revealed the formation of single phase tetragonal structure with space group P4bm. The crystallite size was observed to be in the range 14.4 nm. Detailed dielectric properties of BCTN compound as function of temperature at different frequencies show that sample exhibits diffuse type transition at curie temperature 316°C. The P-E and M-H studies confirmed the coexistent ferroelectricity and magnetism at room temperature.
Cite this paper: Jindal, S. , Devi, S. , Vasishth, A. and Kumar, G. (2018) Study of Structural and Dielectrical Properties of Lead Free Polycrystalline Electro Ceramics Ba5CaTi2Nb8O30 (BCTN) for Microwave Tunable Device Applications. Materials Sciences and Applications, 9, 55-67. doi: 10.4236/msa.2018.91004.
References

[1]   Kim, J.W. and Heinrich, J.G. (2005) Influence of Processing Parameters on Microstructure and Ferroelectric Properties of PZT-Coated SiC Fibers. Journal of the European Ceramic Society, 25, 1637-1645.
https://doi.org/10.1016/j.jeurceramsoc.2004.05.011

[2]   Yang, A., Wang, C.A., Guo, R., Huang, Y. and Nan, C.W. (2010) Effects of Sintering Behavior on Microstructure and Piezoelectric Properties of Porous PZT Ceramics. Ceramics International, 36, 549-554.
https://doi.org/10.1016/j.ceramint.2009.09.022

[3]   Ortega, R., Loria, A. and Kelly, R. (1995) A Semiglobally Stable Output Feedback PI2D Regulator for Robot Manipulators. IEEE Transactions on Automatic Control, 40, 1432-1436.
https://doi.org/10.1109/9.402235

[4]   Rhim, S.M., Hong, S., Bak, H. and Kim, O.K. (2000) Effects of B2O3 Addition on the Dielectric and Ferroelectric Properties of Ba0.7Sr0.3TiO3 Ceramics. Journal of the American Ceramic Society, l83, 1145-1148.

[5]   Su, B., Holmes, J.E., Cheng, B.L. and Button, T.W. (2002) Processing Effects on the Microstructure and Dielectric Properties of Barium Strontium Titanate (BST) Ceramics. Journal of Electroceramics, 19, 111-116.
https://doi.org/10.1023/A:1022850205284

[6]   Tan, Y., Zhang, J., Wang, C., Viola, G. and Yan, H. (2015) Enhancement of Electric Field-Induced Strain in BaTiO3 Ceramics through Grain Size Optimization. Physica Status Solidi (a), 212, 433-438.

[7]   Ganguly, P., Devi, S., Jha, A.K. and Deori, K.L. (2009) Dielectric and Pyroelectric Studies of Tungsten Bronze Structured Ba5SmTi3Nb7O30 Ferroelectric Ceramics. Ferroelectrics, 381,111-119.
https://doi.org/10.1080/00150190902869772

[8]   Ganguly, P., Jha, A.K. and Deori, K.L. (2009) Investigations of Dielectric, Pyroelectric and Electrical Properties of Ba5SmTi3Nb7O30 Ferroelectric Ceramic. Journal of Alloys and Compounds, 484, 40-44.
https://doi.org/10.1016/j.jallcom.2009.05.034

[9]   Chen, W., Yang, W.Z., Liu, X.Q. and Chen, X.M. (2016) Structural, Dielectric and Magnetic Properties of Ba3SrLn2Fe2Nb8O30 (Ln = La, Nd, Sm) Filled Tungsten Bronze Ceramics. Journal of Alloys and Compounds, 675, 311-316.
https://doi.org/10.1016/j.jallcom.2016.03.099

[10]   Shannigrahi, S.R., Choudhary, R.N.P., Kumar, A. and Acharya, H.N. (1998) Phase Transition in Ba5RTi3Nb7O30 (R = Dy, Sm) Ferroelectric Ceramics. Journal of Physics and Chemistry of Solids, 59, 737-742.
https://doi.org/10.1016/S0022-3697(97)00217-5

[11]   Zhu, X.-L. and Chen, X.-M. (2014) Ferroelectric Transition and Curie Weiss Behavior in Some Filled Tungsten Bronze Ceramics. Chinese Physics Letters, l31, 015201.

[12]   Fang, L., Zhang, H., Yang, J.F., Meng, F.C. and Yuan, R.Z. (2003) Structural and Dielectric Properties of Ferroelectric Sr5RTi3Nb7O30 (R = Nd and Y) Ceramics. Journal of Materials Science Letters, 22, 1705-1707.
https://doi.org/10.1023/B:JMSL.0000004654.78051.d3

[13]   Zhang, H., Fang, L., Huang, T.H., Liu, H.X., Yuan, R.Z. and Dronskowski, R. (2005) Structural and Dielectric Properties of Ferroelectric Sr4R2Ti4Nb6O30 (R = Sm and Nd) Ceramics. Journal of Materials Science, 40, 529-531.
https://doi.org/10.1007/s10853-005-6121-3

[14]   Kathayat, K., Panigrahi, A., Pandey, A. and Kar, S. (2012) Characterization of Electrical Behavior of Ba5HoTi3V7O30 Ceramic Using Impedance Analysis. Materials Sciences and Applications, 3, 390.
https://doi.org/10.4236/msa.2012.36056

[15]   Zerihun, G., Gong, G., Huang, S. and Yuan, S. (2015) Dielectric and Relaxor Ferroelectric Properties of Sr4CaLaTi3Nb7O30 Tetragonal Tungsten Bronze Ceramics. Ceramics International, 41, 12426-12431.
https://doi.org/10.1016/j.ceramint.2015.06.084

[16]   Ganguly, P. and Jha, A.K. (2010) Structural and Electrical Properties of Ba5-xCax SmTi3Nb7O30 (x = 0 - 5) Ferroelectric Ceramics. Journal of Alloys and Compounds, 495, 7-12.
https://doi.org/10.1016/j.jallcom.2010.01.118

[17]   Shukla, A., Choudhary, R.N.P., Thakur, A.K. and Pradhan, D.K. (2010) Structural, Microstructural and Electrical Studies of La and Cu Doped BaTiO3 Ceramics. Physica B: Condensed Matter, 405, 99-106.
https://doi.org/10.1016/j.physb.2009.08.075

[18]   Das, P.S., Chakraborty, P.K., Behera, B. and Choudhary, R.N.P. (2007) Electrical Properties of Li2BiV5O15 Ceramics. Physica B: Condensed Matter, 395, 98-103.
https://doi.org/10.1016/j.physb.2007.02.065

[19]   Sharma, S., Shamim, K., Ranjan, A., Rai, R., Kumari, P. and Sinha, S. (2015) Impedance and Modulus Spectroscopy Characterization of Lead Free Barium Titanate Ferroelectric Ceramics. Ceramics International, 41, 7713-7722.
https://doi.org/10.1016/j.ceramint.2015.02.102

[20]   Yang, Z., Fang, L., Liu, L., Hu, C., Chen, X. and Zhou, H. (2012) Dielectric Properties and High-Temperature Dielectric Relaxation of Tungsten-Bronze Structure Ceramics Ba2GdFeNbTa3O15. Journal of Materials Science: Materials in Electronics, 23, 229-233.
https://doi.org/10.1007/s10854-011-0391-0

[21]   Jindal, S., Vasishth, A. and Devi, S. (2015) Structural and Dielectric Properties of Co Substituted Multi Ferroic Ceramics. Journal of Basic and Applied Engineering Research, 2, 1877-1879.

[22]   Wakiya, N., Wang, J.K., Saiki, A., Shinozaki, K. and Mizutani, N. (1999) Synthesis and Dielectric Properties of Ba1-xR2x/3Nb2O6 (R: Rare Earth) with Tetragonal Tungsten Bronze Structure. Journal of the European Ceramic Society, 19, 1071-1075.
https://doi.org/10.1016/S0955-2219(98)00376-8

[23]   Zhu, X.L., Liu, X.Q. and Chen, X.M. (2011) Crystal Structure and Dielectric Properties of Sr5RTi3Nb7O30 (R = La, Nd, Sm, and Eu) Tungsten Bronze Ceramics. Journal of the American Ceramic Society, 94, 1829-1836.

[24]   Hu, C., Hou, L., Fang, L. and Liu, L. (2013) Preparation and Dielectric Properties of Unfilled Tungsten Bronze Ferroelectrics Ba4RETiNb9O30. Journal of Alloys and Compounds, 581, 547-552.
https://doi.org/10.1016/j.jallcom.2013.07.164

[25]   Hu, C., Sun, Z., Zhu, Q., Lu, F., Li, C., Liu, L. and Fang, L. (2016) Relax or Behavior and Ferroelectric Properties of a New Ba4SmFe0.5Nb9.5O30 Tungsten Bronze Ceramic. Ceramics International, 42, 14999-15004.
https://doi.org/10.1016/j.ceramint.2016.06.147

[26]   Fang, L., Peng, X., Li, C., Hu, C., Wu, B. and Zhou, H. (2010) Dielectric Properties of Ba4Sm2Fe2M8O30 (M = Nb, Ta) with Tetragonal Bronze Structure. Journal of the American Ceramic Society, 93, 2430-2433.

[27]   Stanculescu, R.E., Ciomaga, C.E., Horchidan, N., Galassi, C., Tufescu, F.M. and Mitoseriu, L. (2016) The Influence of Post-Sintering Re-Oxidation Treatment on Dielectric Response of Dense and Porous Ba0.70Sr0.30TiO3 Ceramics. Ceramics International, 42, 527-536.
https://doi.org/10.1016/j.ceramint.2015.08.141

[28]   Xu, F., Trolier-McKinstry, S., Ren, W., Xu, B., Xie, Z.L. and Hemker, K.J. (2001) Domain Wall Motion and Its Contribution to the Dielectric and Piezoelectric Properties of Lead Zirconate Titanate Films. Journal of Applied Physics, 189, 1336-1348.
https://doi.org/10.1063/1.1325005

[29]   Pilgrim, S.M., Sutherland, A.E. and Winzer, S.R. (1990) Diffuseness as a Useful Parameter for Relaxor Ceramics. Journal of the American Ceramic Society, 73, 3122-3125.

[30]   Egerton, L. and Dillon, D.M. (1959) Piezoelectric and Dielectric Properties of Ceramics in the System Potassium—Sodium Niobate. Journal of the American Ceramic Society, 42, 438-442.

[31]   Liu, W.C. (2012) Inelastic Light Scattering Studies of Diffuse Phase Transition in Ferroelectric Sr1.9Ca0.1NaNb5O15 Thin Films. Journal of Raman Spectroscopy, 143, 326-330.

[32]   Karan, N.K. (2009) Raman Spectral Studies of Zr4+-Rich BaZrxTi1-xO3 (0.5□ ×□ 1.00) Phase Diagram. Journal of Raman Spectroscopy, 40, 370-375.

[33]   Jindal, S., Vasishth, A., Devi, S. and Singh, B. (2017) Synthesis and Characterization of Polycrystalline Ba5CaTi2-xMxNb8O30 (M= Cu) Tungsten Bronze Electro Ceramics. Ferroelectrics, 519, 9-14.
https://doi.org/10.1080/00150193.2017.1362278

[34]   Zhu, X.L. and Chen, X.M. (2012) Ferroelectric Transition of Sr5SmTi3Nb7O30 Tungsten Bronze Ceramics Investigated Using Differential Scanning Calorimetry and Raman Scattering. Journal of the American Ceramic Society, 95, 3185-3191.

[35]   Huo, S.X., Yuan, S.L., Qiu, Y., Ma, Z.Z. and Wang, C.H. (2012) Crystal Structure and Multiferroic Properties of BiFeO3-Na0.5K0.5NbO3 Solid Solution Ceramics Prepared by Pechini Method. Materials Letters, 68, 8-10.
https://doi.org/10.1016/j.matlet.2011.09.081

[36]   Dang, N.V., Dung, N.T., Phong, P.T. and Lee, I.J. (2015) Effect of Fe3+ Substitution on Structural, Optical and Magnetic Properties of Barium Titanate Ceramics. Physica B: Condensed Matter, 457, 103-107.
https://doi.org/10.1016/j.physb.2014.09.046

 
 
Top