Room temperature Multiferroicity and Magnetoelectric coupling in Ca/Mn modified BaTiO3
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| Format: | Preprint |
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2024
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| author | Maneesha, P. Samantaray, Koyal Suman Saha, Rakhi Urkude, Rajashri Ghosh, Biplab Pathak, Arjun K Bhaumik, Indranil Mekki, Abdelkrim Harrabi, Khalil Sen, Somaditya |
| author_facet | Maneesha, P. Samantaray, Koyal Suman Saha, Rakhi Urkude, Rajashri Ghosh, Biplab Pathak, Arjun K Bhaumik, Indranil Mekki, Abdelkrim Harrabi, Khalil Sen, Somaditya |
| contents | Materials with magnetoelectric coupling (MEC) between ferroic orders at room temperature are emerging field in modern technology and physics. BaTiO3 is a robust ferroelectric in which several doping has led to MEC. In Ca and Mn modified BaTiO3 has been study with a series of Ba(1-x)Ca(x)Ti(1-y)Mn(y)O3 (x=y= 0, 0.03, 0.06, 0.09), in this MEC was only observed in x=0.03. The structural modifications with changing substitution reveal a reduced Ti-O-Ti bond angle for this sample which is the most ferromagnetic in nature. A mixed phase of tetragonal P4mm and hexagonal P63/mmc space groups of BaTiO3 is observed in the substituted samples, with nominal contribution of the hexagonal phase for x=0.03. A valence state study using XPS and XANES reveals the presence of enhanced proportion of Mn3+ ions in the sample which support a pseudo Jahn-Teller distortion, thereby supporting the ferroelectricity for x=0.03. Direct evidences of MEC was obtained from magnetoelectric measurements. A magnetoelectric coupling coefficient, αME ~44 mVcm-1Oe-1 was obtained for dc magnetic field of 600 Oe and a 10Hz ac field of 40 Oe. Such MEC was not observed for higher substitution which emphasizes the sensitivity of the structural properties on substitution. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_22018 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Room temperature Multiferroicity and Magnetoelectric coupling in Ca/Mn modified BaTiO3 Maneesha, P. Samantaray, Koyal Suman Saha, Rakhi Urkude, Rajashri Ghosh, Biplab Pathak, Arjun K Bhaumik, Indranil Mekki, Abdelkrim Harrabi, Khalil Sen, Somaditya Materials Science Applied Physics Materials with magnetoelectric coupling (MEC) between ferroic orders at room temperature are emerging field in modern technology and physics. BaTiO3 is a robust ferroelectric in which several doping has led to MEC. In Ca and Mn modified BaTiO3 has been study with a series of Ba(1-x)Ca(x)Ti(1-y)Mn(y)O3 (x=y= 0, 0.03, 0.06, 0.09), in this MEC was only observed in x=0.03. The structural modifications with changing substitution reveal a reduced Ti-O-Ti bond angle for this sample which is the most ferromagnetic in nature. A mixed phase of tetragonal P4mm and hexagonal P63/mmc space groups of BaTiO3 is observed in the substituted samples, with nominal contribution of the hexagonal phase for x=0.03. A valence state study using XPS and XANES reveals the presence of enhanced proportion of Mn3+ ions in the sample which support a pseudo Jahn-Teller distortion, thereby supporting the ferroelectricity for x=0.03. Direct evidences of MEC was obtained from magnetoelectric measurements. A magnetoelectric coupling coefficient, αME ~44 mVcm-1Oe-1 was obtained for dc magnetic field of 600 Oe and a 10Hz ac field of 40 Oe. Such MEC was not observed for higher substitution which emphasizes the sensitivity of the structural properties on substitution. |
| title | Room temperature Multiferroicity and Magnetoelectric coupling in Ca/Mn modified BaTiO3 |
| topic | Materials Science Applied Physics |
| url | https://arxiv.org/abs/2410.22018 |