Rajak, P and Kulkarni, PD and Krishnan, M and Chowdhury, P and Bhattacharyya, S (2019) Spatially resolved structure and domain wall propagation in defect induced SmCo/Co exchange spring magnet. Journal of Magnetism and Magnetic Materials, 491. ISSN 03048853
Full text not available from this repository.Abstract
SmCo5/Co exchange-coupled films with high saturation magnetization, and hence high energy product were fabricated on MgO substrates by sequential deposition of elemental Sm and Co layers at 450 °C followed by subsequent annealing at the same temperature for 1 h. Formation of defects induced multi-layered structures and the composition of individual layers were confirmed through high resolution Scanning Transmission Electron Microscopy (HRSTEM) imaging acquired on high angle annular dark field (HAADF) detector and Energy Dispersive X-ray (EDX) spectroscopy. Micromagnetic simulations and magnetic measurements further confirmed that the observed structure is coupled in rigid phase between soft and hard magnetic layers and the enhancement in coercivity results due to the domain wall pinning at the defects sites. This leads to the magnetic energy density in the film of the order of 22.2 MGOe which is close to the bulk value and have potential applications towards Micro-Electro-Mechanical Systems.
| Item Type: | Article |
|---|---|
| Subjects: | CHEMISTRY AND MATERIALS > Chemistry and Materials (General) CHEMISTRY AND MATERIALS > Composite Materials CHEMISTRY AND MATERIALS > Metals and Metallic Materials |
| Depositing User: | Mrs SK Pratibha |
| Date Deposited: | 23 Nov 2021 11:42 |
| Last Modified: | 23 Nov 2021 11:42 |
| URI: | http://nal-ir.nal.res.in/id/eprint/13336 |
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