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.
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15 May 2010
Research Article|
May 20 2010
dc and high frequency magnetic properties of nanopatterned arrays fabricated using sol-gel precursors Available to Purchase
Goutam Sheet;
Goutam Sheet
a)
1Department of Physics and Astronomy,
Northwestern University
, 2145 Sheridan Road, Evanston, Illinois 60208, USA
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Alexandra R. Cunliffe;
Alexandra R. Cunliffe
1Department of Physics and Astronomy,
Northwestern University
, 2145 Sheridan Road, Evanston, Illinois 60208, USA
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Erik J. Offerman;
Erik J. Offerman
1Department of Physics and Astronomy,
Northwestern University
, 2145 Sheridan Road, Evanston, Illinois 60208, USA
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Chad M. Folkman;
Chad M. Folkman
2Department of Materials Science and Engineering Physics,
University of Wisconsin–Madison
, 2164 Engineering Centers Building, 1550 Engineering Drive Madison, Wisconsin 53706, USA
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Chang-Beom Eom;
Chang-Beom Eom
2Department of Materials Science and Engineering Physics,
University of Wisconsin–Madison
, 2164 Engineering Centers Building, 1550 Engineering Drive Madison, Wisconsin 53706, USA
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Venkat Chandrasekhar
Venkat Chandrasekhar
a)
1Department of Physics and Astronomy,
Northwestern University
, 2145 Sheridan Road, Evanston, Illinois 60208, USA
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Goutam Sheet
1,a)
Alexandra R. Cunliffe
1
Erik J. Offerman
1
Chad M. Folkman
2
Chang-Beom Eom
2
Venkat Chandrasekhar
1,a)
1Department of Physics and Astronomy,
Northwestern University
, 2145 Sheridan Road, Evanston, Illinois 60208, USA
2Department of Materials Science and Engineering Physics,
University of Wisconsin–Madison
, 2164 Engineering Centers Building, 1550 Engineering Drive Madison, Wisconsin 53706, USA
a)
Authors to whom correspondence should be addressed. Electronic addresses: [email protected] and [email protected].
J. Appl. Phys. 107, 104309 (2010)
Article history
Received:
January 07 2010
Accepted:
March 22 2010
Citation
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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