SEMINAR: Complex Periodic Magnetic Nanostructures
|Complex Periodic Magnetic Nanostructures : An Experimental Platform for Magnomics
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 . The second part of the talk will discuss our work
on high quality bi-component magnonic crystals . 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 .
 A. O. Adeyeye, N. Singh, Journal of Physics D-Applied Physics-Topical Review, 41,153001 (2008).
 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).
 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)
Tue, 06 Dec 2011 15:45
Tue, 06 Dec 2011 16:45
Jake Dennis <[email protected]>
Wed, 28 Sep 2011 09:25
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