Nanostructures of ferromagnetic oxides having Curie temperatures above room temperature have potential for applications in memory devices and future spin-based electronic applications. In this article, we report on the dc and high frequency magnetic properties of arrays of elliptical nanopillars, covering a large area, fabricated by combined electron beam lithography, and a sol-gel based chemical route. The nanopillars were successfully fabricated on insulating oxidized silicon substrates and on epitaxial thin films of ferroelectric . We performed magnetic force microscopy and ferromagnetic resonance spectroscopy on the arrays to probe their magnetic properties. Due to the possible existence of dominant pinning sites, the nanopillars are not single-domain even at nanometer size scales.
dc and high frequency magnetic properties of nanopatterned arrays fabricated using sol-gel precursors
Goutam Sheet, Alexandra R. Cunliffe, Erik J. Offerman, Chad M. Folkman, Chang-Beom Eom, Venkat Chandrasekhar; dc and high frequency magnetic properties of nanopatterned arrays fabricated using sol-gel precursors. J. Appl. Phys. 15 May 2010; 107 (10): 104309. https://doi.org/10.1063/1.3393745
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