VP13-02 Strain induced multiferroicity in Co3-xSbxO4 (x=0, 0.1 and 0.2) thin films
Creators: Jisna Rahman
Publisher: name: IEEE
Year: 2025

Cobalt oxide (Co3O4) with spinel structure is extensively studied for its magnetic properties and its multifunctional applications. The doping of stereo chemically active elements is expected to reduce the symmetry and in effect alter the electric and magnetic properties of Co3O4 spinel oxides. In this study, the effect of doping of Sb, a stereo chemically active element in Co3O4 powder prepared by solid state method and thin films grown by pulsed laser ablation was carried out. The thin films were deposited on Al2O3 (0001) single crystal substrates. The effect of substitution in the structure of the parent compound was analyzed using x-ray diffraction and Raman studies. The magnetic measurements performed at room temperature confirmed the presence of ferrimagnetic ordering in these powder samples as well as in thin films. The symmetry reduction due to the lone pair effect of Sb doping was studied and the effect of it was observed in the ferroelectric properties of the thin film studied under Piezoresponse Force Microscopy and in magneto-optic Kerr studies. The stereo chemically active Sb is expected to have induced a symmetry reduction in these thin films and give rise to ferroelectric behavior and magneto-optic effects at room temperature. The study confirms the simultaneous presence of electric and magnetic ordering in thin films thus showing potential multiferroic character .References: 1. B. Antic, G.F. Goya, H.R. Rechenberg, V. Kusigerski, N. Jovic, M. Mitric, J. Phys.: Condens. Matter 16 (2004) 651. 2. S. Kumar, Alimuddin, R. Kumar, A. Dogra, V.R. Reddy, A. Banerjee, J. Appl. Phys. 99 (2006) 08M910. 3. N. Fujiwara, H. Yasuoka, Y. Ueda, Phys. Rev. B 57 (1981) 3539. 4. J. L. Dormann, M. Nogues, J. Phys.; Condens. Matter 2 (1990) 1223. 5. G. Srinivasan, E.T. Rasmussen, R. Hayes, Phys. Rev. B 67 (2003) 014418. 6. D. Joung, A. Chunder, L. Zhai, S.I. Khondaker, Appl. Phys. Lett. 97 (2010) 093105. 7. Y. Ikedo, J. Sugiyama, H. Nozaki, H. Itahara, J. Brewer, E. J. Ansaldo, G.D. Morris, D. Andreica, A. Amato, Phys. Rev. B 75 (2007) 054424. 8. W.L. Smith, A.D. Hobson, Acta Cryst. B 29 (1973), 362. 9. N. E. Rajeevan, P. P. Pradyumnan, Appl. Phys. 92 (2008) 102910. 10. N.E. Rajeevan, K. Ravi, D. K. Shukla, P.P. Pradyumnan, S.K. Arora, I.V. Shvets, Mater. Sci. Eng. B 163 (2009) 48. 11. N. E. Rajeevan, R. Kumar, D. K. Shukla, P. Thakur, N. B. Brookes, K. H. Chae , W. K. Choi, S. Gautam , S. K. Arora , I. V. Shvets, P. P. Pradyumnan, J. Phys.: Condens. Matter 21 (2009) 406006. 12. S.R. Gawali, A. C. Gandhi, S.S. Gaikwad, J. Pant, T-S. Chan, C-L. Cheng, Y-R. Ma, S. Y. Wu, Sci. Rep. 8(1) (2018) 249.
Cobalt oxide (Co3O4) with spinel structure is extensively studied for its magnetic properties and its multifunctional applications. The doping of stereo chemically active elements is expected to reduce the symmetry and in effect alter the electric and magnetic properties of Co3O4 spinel oxides. In this study, the effect of doping of Sb, a stereo chemically active element in Co3O4 powder prepared by solid state method and thin films grown by pulsed laser ablation was carried out. The thin films were deposited on Al2O3 (0001) single crystal substrates. The effect of substitution in the structure of the parent compound was analyzed using x-ray diffraction and Raman studies. The magnetic measurements performed at room temperature confirmed the presence of ferrimagnetic ordering in these powder samples as well as in thin films. The symmetry reduction due to the lone pair effect of Sb doping was studied and the effect of it was observed in the ferroelectric properties of the thin film studied under Piezoresponse Force Microscopy and in magneto-optic Kerr studies. The stereo chemically active Sb is expected to have induced a symmetry reduction in these thin films and give rise to ferroelectric behavior and magneto-optic effects at room temperature. The study confirms the simultaneous presence of electric and magnetic ordering in thin films thus showing potential multiferroic character .References: 1. B. Antic, G.F. Goya, H.R. Rechenberg, V. Kusigerski, N. Jovic, M. Mitric, J. Phys.: Condens. Matter 16 (2004) 651. 2. S. Kumar, Alimuddin, R. Kumar, A. Dogra, V.R. Reddy, A. Banerjee, J. Appl. Phys. 99 (2006) 08M910. 3. N. Fujiwara, H. Yasuoka, Y. Ueda, Phys. Rev. B 57 (1981) 3539. 4. J. L. Dormann, M. Nogues, J. Phys.; Condens. Matter 2 (1990) 1223. 5. G. Srinivasan, E.T. Rasmussen, R. Hayes, Phys. Rev. B 67 (2003) 014418. 6. D. Joung, A. Chunder, L. Zhai, S.I. Khondaker, Appl. Phys. Lett. 97 (2010) 093105. 7. Y. Ikedo, J. Sugiyama, H. Nozaki, H. Itahara, J. Brewer, E. J. Ansaldo, G.D. Morris, D. Andreica, A. Amato, Phys. Rev. B 75 (2007) 054424. 8. W.L. Smith, A.D. Hobson, Acta Cryst. B 29 (1973), 362. 9. N. E. Rajeevan, P. P. Pradyumnan, Appl. Phys. 92 (2008) 102910. 10. N.E. Rajeevan, K. Ravi, D. K. Shukla, P.P. Pradyumnan, S.K. Arora, I.V. Shvets, Mater. Sci. Eng. B 163 (2009) 48. 11. N. E. Rajeevan, R. Kumar, D. K. Shukla, P. Thakur, N. B. Brookes, K. H. Chae , W. K. Choi, S. Gautam , S. K. Arora , I. V. Shvets, P. P. Pradyumnan, J. Phys.: Condens. Matter 21 (2009) 406006. 12. S.R. Gawali, A. C. Gandhi, S.S. Gaikwad, J. Pant, T-S. Chan, C-L. Cheng, Y-R. Ma, S. Y. Wu, Sci. Rep. 8(1) (2018) 249.