Bi1-xBaxFeO3 (0 ≤ x ≤ 0.3) nanopowders were synthesized using sol-gel technique. The structural and magnetic properties were investigated using X-ray diffraction, SEM and VSM. As Ba2+ doping concentration was increased, the structure of the samples changed from rhombohedral to tetragonal or monoclinic. The structural change might be an important factor for achieving the ferroelectric properties in this material. The lattice parameters were observed to increase with increase in Ba2+ concentration. All the M-H loops showed the ferromagnetic behavior. Magnetization was observed to enhance with increase in Ba concentration. The enhancement in the magnetization due to Ba2+ doping may be due to the replacement of Bi3+ ions by Ba2+ which might have resulted in the suppression of spiral spin structure.
References
[1]
Wang, J., Neaton, J.B., Zheng, H., Nagarajan, V., Ogale, S.B., Liu, B., Viehland, D., Vaithyanathan, V., Schlom, D.G., Waghmare, U.V., Spaldin, N.A., Rabe, K.M., Wuttig, M. and Ramesh, R. (2003) Epitaxial BiFeO3 Multiferroic Thin Film Heterostructures. Science, 299, 1719-1722. http://dx.doi.org/10.1126/science.1080615
[2]
Feng, H.J., Wang, M., Liu, F., Duan, B., Tiam, J. and Guo, X. (2015) Enhanced Optical Properties and the Origin of Carrier Transport in BiFeO3/TiO2 Heterostructures with 109 Domain Walls. Journal of Alloys and Compounds, 628, 311-316. http://dx.doi.org/10.1016/j.jallcom.2014.11.211
[3]
Chida, H.U., Veno, R., Funakubu, H. and Koda, S. (2006) Crystal Structure and Ferroelectric Properties of Rare-Earth Substituted BiFeO3 Thin Films. Journal of Applied Physics, 100, Article ID: 014106.
[4]
Raghavan, C.M., Kim, J.W. and Kim, S.S. (2014) Effects of Ho and Ti Doping on Structural and Electrical Properties of BiFeO3 Thin Films. Journal of the American Ceramic Society, 97, 235-240. http://dx.doi.org/10.1111/jace.12641
[5]
Kothari, D., Raghavendra Reddy, V., Gupta, A., Phase, D.M., Lakshmi, N., Despande, S.K. and Awasthi, A.M. (2007) Study of the Effect of Mn Doping on the BiFeO3 System. Journal of Physics: Condensed Matter, 19, Article ID: 136202. http://dx.doi.org/10.1088/0953-8984/19/13/136202
[6]
Prellier, W., Singh, M.P. and Murugavel, P. (2005) The Single-Phase Multiferroic Oxides: from Bulk to Thin Film. Journal of Physics: Condensed Matter, 17, R803. http://dx.doi.org/10.1088/0953-8984/17/30/R01
[7]
Kim, T.Y., Hong, N.H., Sugawara, T., Raghavender, A.T. and Kurisu, M. (2013) Room Temperature Ferromagnetism with Large Magnetic Moment at Low Field in Rare-Earth-Doped BiFeO3 Thin Films. Journal of Physics: Condensed Matter, 25, Article ID: 206003. http://dx.doi.org/10.1088/0953-8984/25/20/206003
[8]
Raghavender, A.T. and Hong, N.H. (2011) Effects of Mn Doping on Structural and Magnetic Properties of Multiferroic BiFeO3 Nanograins Made by Sol-Gel Method. Journal of Magnetics, 16, 19-22. http://dx.doi.org/10.4283/JMAG.2011.16.1.019
[9]
Wang, D.H., Goh, W.C., Ning, M. and Ong, C.K. (2006) Effect of Ba Doping on Magnetic, Ferroelectric, and Magnetoelectric Properties in Mutiferroic BiFeO3BiFeO3 at Room Temperature. Journal of Applied Physics Letters, 88, 1.
[10]
Cheng, Z., Wang, X., Dou, S., Kimura, H. and Ozawa, K. (2008) Improved Ferroelectric Properties in Multiferroic BiFeO3 Thin Films through La and Nb Co Doping. Physical Review B, 77, Article ID: 092101. http://dx.doi.org/10.1103/PhysRevB.77.092101
[11]
Ghosh, A.K., Kevin, H., Chatterjee, B., Dwivedi, G.D., Barman, A., Yang, H.D. and Chatterjee, S. (2012) Effect of Sr-Doping on Multiferroic Properties of Bi0.8La0.2Fe0.9Mn0.1O3. Solid State Communications, 152, 557-560. http://dx.doi.org/10.1016/j.ssc.2011.12.027
[12]
Makhdoom, A.R., Akhtar, M.J., Rafiq, M.A. and Hassan, M.M. (2012) Investigation of Transport Behavior in Ba Doped BiFeO3. Ceramics International, 38, 3829-3834. http://dx.doi.org/10.1016/j.ceramint.2012.01.032
[13]
Qi, X., Dho, J., Tomov, R., Blamire, M.G. and MacManus-Driscoll, J.L. (2005) Greatly Reduced Leakage Current and Conduction Mechanism in Aliovalent-Ion-Doped Bi-FeO3. Journal of Applied Physics Letters, 86, Article ID: 062903. http://dx.doi.org/10.1063/1.1862336
[14]
Raghavender, A.T., Pajic, D., Zadro, K., Milekovic, T., Rao, P.V., Jadhav, K.M. and Ravinder, D. (2007) Synthesis and Magnetic Properties of NiFe2-xAlxO4 Nanoparticles. Journal of Magnetism and Magnetic Materials, 316, 1-7. http://dx.doi.org/10.1016/j.jmmm.2007.03.204
[15]
Raghavender, A.T., Hong, N.H., Park, C., Jung, M.-H., Lee, K.-J. and Lee, D. (2011) Thickness Dependent Magnetic Properties of BiFeO3 Thin Films Prepared by Pulsed Laser Deposition. Materials Letters, 65, 2786-2788. http://dx.doi.org/10.1016/j.matlet.2011.05.060
[16]
Rojas-George, G., Concha-Balderrama, A., Silva, J., Fuentes, L. and Reyes-Rojas, A. (2015) Elucidating the Real Effect of Ba and Co Doping on the Magnetic and Optical Properties of BiFeO3. Ceramics International, 41, 9140-9145. http://dx.doi.org/10.1016/j.ceramint.2015.03.322
[17]
Berbenni, V., Milanese, C., Broni, G., Girella, A. and Marini, A. (2015) Mechanical Activation of the Solid-Phase Reaction between Bismuth Citrate and Iron(II) Oxalate Dihydrate to Yield BiFeO3. Ceramics International, 41, 7216-7220. http://dx.doi.org/10.1016/j.ceramint.2015.02.057
[18]
El-Desoky, M.M., Ayoua, M.S., Mostafa, M.M. and Ahmed, M.A. (2016) Multiferroic Properties of Nano Structured Barium Doped Bismuth Ferrite. Journal of Magnetism and Magnetic Materials, 404, 68-73. http://dx.doi.org/10.1016/j.jmmm.2015.12.020
[19]
Das, R. and Mandal, K. (2012) Magnetic, Ferroelectric and Magnetoelectric Properties of Ba-Doped BiFeO3. Journal of Magnetism and Magnetic Materials, 324, 1913-1918. http://dx.doi.org/10.1016/j.jmmm.2012.01.022
[20]
Mandal, S.K., Rakshit, T., Ray, S.K., Mishra, S.K., Krishna, P.S.R. and Chandra, A. (2013) Nanostructures of Sr2+ Doped BiFeO3 Multifunctional Ceramics with Tunable Photoluminescence and Magnetic Properties. Journal of Physics: Condensed Matter, 25, Article ID: 055303. http://dx.doi.org/10.1088/0953-8984/25/5/055303
[21]
Dhir, G., Uniyal, P. and Verma, N.K. (2014) Effect of Particle Size on Multiferroism of Barium-Doped Bismuth Ferrite Nanoparticles. Materials Science in Semiconductor Processing, 27, 611-618. http://dx.doi.org/10.1016/j.mssp.2014.07.041
[22]
Qian, F.Z., Jiang, J.S., Guo, S.Z., Jiang, D.M. and Zhang, W.G. (2009) Multiferroic Properties of Bi1-xDyxFeO3 Nano Particles. Journal of Applied Physics, 106, Article ID: 084312. http://dx.doi.org/10.1063/1.3245390
[23]
Pardo, V. and Pickett, W.E. (2008) Magnetism from 2p States in Alkaline Earth Monoxides: Trends with Varying N Impurity Concentration. Physical Review B, 78, Article ID: 134427. http://dx.doi.org/10.1103/PhysRevB.78.134427
[24]
Bhushan, B., Basumallick, A., Bandhopadhyay, S.K., Vasanth Acharya, N.Y. and Das, D. (2009) Effect of Alkaline Earth Metal Doping on Thermal, Optical, Magnetic and Dielectric Properties of BiFeO3 Nanoparticles. Journal of Physics D: Applied Physics, 42, Article ID: 065004. http://dx.doi.org/10.1088/0022-3727/42/6/065004
