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Title: Fabrication and static magnetic properties of novel one-and two-dimensional bi-component magnonic crystals
Authors: Adeyeye, A.O. 
Jain, S. 
Ren, Y. 
Keywords: Magnetic nanowires
magnetic superlattice
magnonic crystals
Issue Date: Jun-2011
Citation: Adeyeye, A.O., Jain, S., Ren, Y. (2011-06). Fabrication and static magnetic properties of novel one-and two-dimensional bi-component magnonic crystals. IEEE Transactions on Magnetics 47 (6 PART 1) : 1639-1643. ScholarBank@NUS Repository.
Abstract: We have fabricated using advanced electron beam lithography, periodic arrays of lateral one-dimensional (1-D) and two-dimensional (2-D) bi-component exchange and magnetostatically coupled magnonic crystals (MC) consisting of alternating cobalt (Co) and Permalloy (Py) nanowires (NWs) and nanodots (NDs), lying side by side. For 1-D MCs, the width of the Co NWs is fixed at 160 nm while the width of the Py NWs is varied from 160 to 800 nm. We observed two distinct switching steps corresponding to the reversal of Py and Co NWs in the array, in contrast to single step switching of homogeneous NWs. For 2-D MCs, the diameter of both Co and Py dots were kept constant at 400 nm. We found that strong dipolar fields from neighboring Co dots strongly influence the reversal process of Py dots resulting in the tuneability of vortex nucleation and annihilations fields. © 2011 IEEE.
Source Title: IEEE Transactions on Magnetics
ISSN: 00189464
DOI: 10.1109/TMAG.2010.2103554
Appears in Collections:Staff Publications

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