Sprintronic materials: Nanostructures and Devices

Chowdhury, P and Krishnan, M and Barshilia, Harish C and Sridhara Rao , DV and Shivakumara, C (2013) Sprintronic materials: Nanostructures and Devices. In: BRNS, AICTE, DST, CSIR and ISRO sponsored National Conference on Spintronic Materials: Nanostructures and Devices (SMND-2011), Physics Procedia.

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In exchange coupled nano-composite magnets, the length scale of the soft phase is limited to twice the domain wall thickness of the hard phase. We investigated the structural and magnetic properties of SmCo5/Co exchange coupled multilayer grown by magnetron sputtering from Sm and Co targets successively at elevated substrate temperature and subsequent in-situ annealing. X-ray diffraction indicates the formation of polycrystalline SmCo5 hard phase. Formation of hard/soft multilayered structure was confirmed through transmission electron microscopy. Magnetic hysteresis measurements showed single phase like behavior, which indicates the soft layer (Co) is well exchange coupled with the neighboring hard phase of SmCo5. Maximum energy product of 15.37 MGOe with HC ~ 3.02 kOe was obtained.

Item Type: Conference or Workshop Item (Paper)
Subjects: PHYSICS
Depositing User: Dr. Harish C. Barshilia
Date Deposited: 16 Oct 2015 05:01
Last Modified: 16 Oct 2015 05:01
URI: http://nal-ir.nal.res.in/id/eprint/12368

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