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Effect of cobalt doping on structural, dielectric and magnetodielectric properties of Ba0.95Sr0.05TiO3 ceramics

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Abstract

Paper reports the synthesis of cobalt doped Ba0.95Sr0.05TiO3 (BST0.05) by solid state reaction (SSR) method. The X-ray diffractograms analysis reveals the formation of single phase crystalline structure. Scanning electron microscopy image was also employed to observe surface morphology. The dielectric constant and dielectric loss of BST0.05 are obviously influenced by cobalt addition content. The Curie temperature Tc shifts to lower value with increasing cobalt doping content. The studies on P-E and M-H hysteresis loops are carried out to confirm simultaneous presence of both the ferroelectric and ferromagnetic orders in a cobalt doped BST. It is observed that, the value of saturation magnetisation (Ms) is 0.01535 emu/g at field 4500 G, value of remanent magnetisation (Mr) is 0.0008263 emu/g and value of coeresivity is 640 G measured at room temperature for BSTCo0.05.

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Acknowledgments

All authors are thankful to DRDO-NRB, New Delhi, India for financial support.

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Authors and Affiliations

  1. Nano-Composite Research Laboratory, Department of Physics, K.B.P. Mahavidyalaya, Pandharpur, 413 304, India

    S. G. Dhumal, P. B. Joshi & D. J. Salunkhe

  2. Department of Physics, Institute of Science, Mumbai, 400 032, India

    S. B. Kulkarni

  3. Naval Materials Research Laboratory, Ambernath, 421 506, India

    Moses E. Jayasingh

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  1. S. G. Dhumal
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  2. S. B. Kulkarni
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  3. Moses E. Jayasingh
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  4. P. B. Joshi
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  5. D. J. Salunkhe
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Correspondence to D. J. Salunkhe.

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Dhumal, S.G., Kulkarni, S.B., Jayasingh, M.E. et al. Effect of cobalt doping on structural, dielectric and magnetodielectric properties of Ba0.95Sr0.05TiO3 ceramics. J Mater Sci: Mater Electron 27, 1421–1426 (2016). https://doi.org/10.1007/s10854-015-3906-2

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  • DOI: https://doi.org/10.1007/s10854-015-3906-2

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