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SEMINAR: Complex Periodic Magnetic Nanostructures

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Today's date is Tuesday, March 02, 2021
Complex Periodic Magnetic Nanostructures : An Experimental Platform for Magnomics Other events...
Periodic magnetic nanostructures are attracting considerable interest because of their unique properties and potential in applications such as ultra-high density bit patterned media, logic devices and non-volatile memory. Recently, there has been a growing interest aimed at the fundamental understanding of lateral periodic magnetic composites, which have been conceived as the magnetic counterpart of a photonic crystal, with spin waves acting as the information carrier. Such periodic magnetic composites are referred to as "magnonic crystals" (MC) with unique properties that are not found in homogenous magnetic nanostructures. The first part of this talk will focus on the use of deep ultra-violet lithography technique in synthesizing coupled periodic magnetic nanostructures of varying geometrical parameters over a very large area. We have used resolution enhancement techniques to fabricate arrays of magnetic nanostructures with lateral dimensions and inter-element spacing below the conventional resolution limit of optical lithography tools [1]. The second part of the talk will discuss our work on high quality bi-component magnonic crystals [2]. The last part of the talk will focus on results of our recent systematic investigation of both the static and dynamic properties of MCs using magneto-optical Kerr effect measurements, magnetic force microscopy and broadband ferromagnetic resonance spectroscopy in collaboration with Prof. Mikhail Kostylev at the University of Western Australia [3]. [1] A. O. Adeyeye, N. Singh, Journal of Physics D-Applied Physics-Topical Review, 41,153001 (2008). [2] Z. K. Wang, V. L. Zhang, H. S. Lim, S. C. Ng, M. H. Kuok, S. Jain, A. O. Adeyeye, Applied Physics Letters, 94, 083112 (2009) and ACS-Nano,4(2) , 643 (2010). [3] J. Ding, M. Kostylev, and A. O. Adeyeye Physical Review Letters 107,047205 (2011) and J. Ding, M. Kostylev, and A. O. Adeyeye Physical Review B 84, 054425 (2011)
Speaker(s) Adekunle Adeyeye
Location Physics 2.15
Contact Mikhail Kostylev <[email protected]> : x2723
Start Tue, 06 Dec 2011 15:45
End Tue, 06 Dec 2011 16:45
Submitted by Jake Dennis <[email protected]>
Last Updated Wed, 28 Sep 2011 09:25
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