Evidence of spin reorientation transition below 150 K from magnetic force microscopy in a ferromagnetic BiFeO$_3$ thin film
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913597077061632 |
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| author | Goswami, Sudipta Mishra, Shubhankar Sahoo, Kishor Kumar Brajesh, Kumar Sahoo, Mihir Ranjan Chatterjee, Subhashree Mukherjee, Devajyoti Pradhan, Kalpataru Garg, Ashish Ghosh, Chandan Kumar Bhattacharya, Dipten |
| author_facet | Goswami, Sudipta Mishra, Shubhankar Sahoo, Kishor Kumar Brajesh, Kumar Sahoo, Mihir Ranjan Chatterjee, Subhashree Mukherjee, Devajyoti Pradhan, Kalpataru Garg, Ashish Ghosh, Chandan Kumar Bhattacharya, Dipten |
| contents | We investigated the magnetic transitions in BiFeO$_3$ at low temperature (5-300 K) and observed nearly 90$^o$ rotation of magnetic domains (imaged by vertical magnetic force microscopy) across 150 K in an epitaxial thin film of thickness $\sim$36 nm. It offers a clear evidence of spin reorientation transition. It also corroborates the transition observed below $\sim$150 K in the zero-field-cooled and field-cooled magnetization versus temperature data. The field-driven 180$^o$ domain switching at room temperature, on the other hand, signifies presence of ferromagnetism. Since bulk antiferromagnetic BiFeO$_3$ does not exhibit such a transition, this observation in ferromagnetic thin film of BiFeO$_3$ indicates a radical effect because of epitaxial strain. Density functional theory based first-principles calculations too reveal that combined in- and out-of-plane epitaxial strain induces magnetic transition from G- to C-type structure in BiFeO$_3$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_03180 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Evidence of spin reorientation transition below 150 K from magnetic force microscopy in a ferromagnetic BiFeO$_3$ thin film Goswami, Sudipta Mishra, Shubhankar Sahoo, Kishor Kumar Brajesh, Kumar Sahoo, Mihir Ranjan Chatterjee, Subhashree Mukherjee, Devajyoti Pradhan, Kalpataru Garg, Ashish Ghosh, Chandan Kumar Bhattacharya, Dipten Materials Science Strongly Correlated Electrons We investigated the magnetic transitions in BiFeO$_3$ at low temperature (5-300 K) and observed nearly 90$^o$ rotation of magnetic domains (imaged by vertical magnetic force microscopy) across 150 K in an epitaxial thin film of thickness $\sim$36 nm. It offers a clear evidence of spin reorientation transition. It also corroborates the transition observed below $\sim$150 K in the zero-field-cooled and field-cooled magnetization versus temperature data. The field-driven 180$^o$ domain switching at room temperature, on the other hand, signifies presence of ferromagnetism. Since bulk antiferromagnetic BiFeO$_3$ does not exhibit such a transition, this observation in ferromagnetic thin film of BiFeO$_3$ indicates a radical effect because of epitaxial strain. Density functional theory based first-principles calculations too reveal that combined in- and out-of-plane epitaxial strain induces magnetic transition from G- to C-type structure in BiFeO$_3$. |
| title | Evidence of spin reorientation transition below 150 K from magnetic force microscopy in a ferromagnetic BiFeO$_3$ thin film |
| topic | Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2412.03180 |