Abstract
Magnetoelectric composites of CuFe1.8Cr0.2O4– Ba0.8Pb0.2TiO3 were prepared using high temperature solid-state reaction technique. X-ray structural analysis of these composites confirms the presence of both the phases in the composite. Detailed studies of dielectric properties (ε′, tan δ and σ ac ) as a function of frequency (100 Hz to 1 MHz) and temperature (30°C to 250°C) show that these compounds exhibit diffuse ferroelectric phase transitions. Results of ac conductivity, dc resistivity and thermoelectric power measurements show that conduction occurs by hopping of charge carriers. The magnetoelectric effect has been studied as a function of intensity of magnetic field. The electrical polarisation was induced in piezoelectric (Ba0.8Pb0.2TiO3) phase as result of strain induced in the ferrite (CuFe1.8Cr0.2O4) phase by the applied magnetic field. The Jahn-Teller distortion caused in the ferrite lattice by Jahn-Teller ions like Cu2+ and Cr3+ is also responsible for the elastic coupling of strain to the Ba0.8Pb0.2TiO3 phase.
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References
I.P. Getman, Sov. Phys. Dokl., 36(3), 233 (1991).
M. Mahesh Kumar, A. Srinivas, S.V. Suryanaryana, G.S. Kumar, and T. Bhimasankaram, Bull. Mat. Sci., 21, 251 (1998).
A.M.J.G Van Run, D.R. Terrel, and J.H. Scholing, J. Mater. Sci., 9, 1710 (1974).
J. Vanden Boomgaard and R.A.J. Born, J. Mater. Sci., 13, 1536 (1978).
V.M. Laletin, Sov. Tech. Phys. Lett., 17, 1342 (1991).
S.V. Suryanaryana, Bull. Mat. Sci., 17, 1259 (1994).
K.K. Patankar, S.A. Patil, K.V. Sivakumar, Y.D. Kolekar, and M.B. Kothale, Mat. Chem. Phys., 65, 97 (2000).
R.P. Mahajan, K.K. Patankar, M.B. Kothale, and S.A. Patil, Bull Mater. Sci., 23, 273 (2000).
O. Prakash, K.D. Mandal, C.C. Christopher, M.S. Sastry, and D. Kumar, Bull. Mat. Sci., 17, 253 (1994).
A.J. Kulkarni, S.P. Rasal, T.S. Magdum, and S.H. Chavan, Bull. Mat. Sci., 16(4), 297 (1993).
B.M. Kulkarni, M. Phil Thesis, Physics Dept. Shivaji University, Kolhapur, (1995).
I. Burn and S. Neirman, J. Mater. Sci., 17, 3150 (1982).
J.B. Goodenough, Prog. Solid State Chem., 5, 145 (1971).
S. Upadhyay, D. Kumar, and O. Prakash, Bull. Mat. Sci., 19, 513 (1996).
R.N.P. Choudhary, S.R. Shannigrahi, and A.K. Singh, Bull. Mat. Sci., 22(6), 75 (1999).
A. Jonscher, Dielectric Relaxations in Solids (Chelsea Dielectric Press, London, 1983).
Y. Yamazaki and M. Satou, J. Appl. Phy., 12, 988 (1973).
N.F. Mott and E.A. Davis, Electronic Processes in Non-Crystalline Solids, 2nd eds. (Clarendon Press, Oxford, 1979).
I.G. Austin and N.F. Mott, Adv. Phys., 18, 41 (1969).
D. Adler and J. Fienleib, Phys. Rev., B2, 3112 (1970).
Ce-Wen Nan, Phys. Rev. B., 50, 6082 (1994).
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Patankar, K., Mathe, V., Patil, A. et al. Electrical Conduction and Magnetoelectric Effect in CuFe1.8Cr0.2O4–Ba0.8Pb0.2TiO3 Composites. Journal of Electroceramics 6, 115–122 (2001). https://doi.org/10.1023/A:1011452616738
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DOI: https://doi.org/10.1023/A:1011452616738