Study of dielectric properties of Ba1-xCaxTiO3 synthesized by high-energy ball milling
Abstract
In this work, the effect of the partial substitution of Ba2+ by Ca2+ in the BaTiO3over dielectric properties and Curie temperature is presented. Ba1-xCaxTiO3 was synthesized by high energy ball milling for 5 h. Ceramic powders were pressed and sintered for 4 h at 1100 °C. A tetragonal pure phase of BaTiO3 was determined by X ray diffraction (XRD). An increase in Curie temperature was observed for x=0.05 sample from relative permittivity at several temperatures. Relative permittivity shows an increase for calcium doped samples attributed to structural modifications of Ti4+ octahedral sites provided by difference in cation size of Ca2+ and Ba2+. Calcium substitution increase the oxygen vacancies modifying the relaxation process and increasing the electric conductivity.
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References
M.R. Panigrahi, S. Panigrahi, Synthesis and microstructure of Ca-doped BaTiO3 ceramics prepared by high-energy ball-milling, Phys. B Condens. Matter. 2009;404:4267–4272.
A. Singh, M.K. Shamim, S. Sharma, R. Rai, Effect of different microwave power applied during microwave assisted radiant heating on the structure, dielectric and electrical properties of Ba0.8Ca0.2TiO3 ceramics, J. Mater. Sci. Mater. Electron. 2018;29:8158–8166.
F.A. Ismail, R.A.M. Osman, M.S. Idris, Review on dielectric properties of rare earth doped barium titanate, AIP Conf. Proc. 2016;1756:090005-1-7.
R. Mahbub, T. Fakhrul, M.F. Islam, Enhanced dielectric properties of Tantalum Oxide doped Barium Titanate based ceramic materials, Procedia Eng. 2013;56:760–765.
G.H. Kwei, A.C. Lawson, S.J.L. Billinge, S.W. Cheong, Structures of the ferroelectric phases of barium titanate, J. Phys. Chem. 1993;97:2368–2377.
K.I. Sakayori, Y. Matsui, H. Abe, E. Nakamura, M. Kenmoku, T. Hara, D. Ishikawa, A. Kokubu, K.I. Hirota, T. Ikeda, Curie temperature of BaTiO3, Jpn. J. Appl. Phys. 1995;34:5443–5445.
Y. Li, Z. Liao, F. Fang, X. Wang, L. Li, J. Zhu, Significant increase of Curie temperature in nano-scale BaTiO3, Appl. Phys. Lett. 2014;105:182901-1–5.
M.R. Panigrahi, S. Panigrahi, Diffuse phase transition and dielectric study in Ba0.95Ca0.05TiO3 ceramic, Phys. B Condens. Matter. 2010;405:2556–2559.
R.D. Shannon, Revised Effective Ionic Radii and Systematic Studies of Interatomie Distances in Halides and Chaleogenides, Acta Crystallogr. A. 1976;32:751–767.
A. Chawla, S. Verma, S. Godara, G.R. Bhadu, A. Singh, M. Singh, Understanding Phase Segregation Using Rietveld Analysis and the Dielectric, Ferroelectric Properties of Ba(1−x)CaxTiO3 Solid Solutions, J. Electron. Mater. 2020;40:4111-4122.
A. Salhi, S. Sayouri, A. Alimoussa, L. Kadira, Impedance spectroscopy analysis of Ca doped BaTiO3 ferroelectric ceramic manufactured with a new synthesis technique, Mater. Today Proc. 2019;13:1248–1258.
L. Zhou, P. Du, Q. Zhang, J. Zhu, Y. Hou, L. Luo, W. Li, Manipulating the ferroelectric, dielectric and photoluminescence performance of Ba0.77Ca0.23TiO3 ceramics through Pr3+ ions doping, J. Alloys Compd. 2019;810:151897.
L.B. Kong, J. Ma, H. Huang, R.F. Zhang, W.X. Que, Barium titanate derived from mechanochemically activated powders, J. Alloys Compd. 2002;337:226–230.
Y. Yang, H. Hao, L. Zhang, C. Chen, Z. Luo, Z. Liu, Z. Yao, M. Cao, H. Liu, Structure, electrical and dielectric properties of Ca substituted BaTiO3 ceramics, Ceram. Int. 2018;44:11109–11115.
O. Rosales-González, F. Sánchez-De Jesús, F. Pedro-García, C.A. Cortés-Escobedo, M. Ramírez-Cardona, A.M. Bolarín-Miró, Enhanced Multiferroic Properties of YFeO3 by Doping with Bi3+, Materials (Basel). 2019;12:2054.
Y. Leyet, F. Guerrero, J.P. de la Cruz, Relaxation dynamics of the conductive processes in BaTiO3 ceramics at high temperature, Mater. Sci. Eng. B. 2010;171:127–132.
L.G. Betancourt-Cantera, A.M. Bolarín-Miró, C.A. Cortés-Escobedo, L.E. Hernández-Cruz, F. Sánchez-De Jesús, Structural transitions and multiferroic properties of high Ni-doped BiFeO3, J. Magn. Magn. Mater. 2018;456:381–389.
