Reversal mechanisms in perpendicularly magnetized nanostructures

Justin M. Shaw; Stephen E. Russek; Thomas Thomson; Michael J. Donahue; Bruce D. Terris; Olav Hellwig; Elizabeth Dobisz; Michael L. Schneider

doi:10.1103/PhysRevB.78.024414

Reversal mechanisms in perpendicularly magnetized nanostructures

Justin M. Shaw, Stephen E. Russek, Thomas Thomson, Michael J. Donahue, Bruce D. Terris, Olav Hellwig, Elizabeth Dobisz, Michael L. Schneider

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate that magnetic reversal in perpendicularly magnetized nanostructures is highly dependent on the nature and condition of the edges. To understand the impact of edge damage, we compare nanostructures created by ion milling to those prepared on prepatterned substrates. The size- and temperature-dependent reversal properties of 25 nm- 1 μm diameter nanodots show that reversal in prepatterned nanostructures is controlled by nucleation within the interior, whereas ion milling results in an edge nucleation process with an unpredicted temperature dependence of the reversal field. © 2008 U.S. Government.

Original language	English
Article number	024414
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.78.024414
Publication status	Published - 16 Jul 2008

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title = "Reversal mechanisms in perpendicularly magnetized nanostructures",

abstract = "We demonstrate that magnetic reversal in perpendicularly magnetized nanostructures is highly dependent on the nature and condition of the edges. To understand the impact of edge damage, we compare nanostructures created by ion milling to those prepared on prepatterned substrates. The size- and temperature-dependent reversal properties of 25 nm- 1 μm diameter nanodots show that reversal in prepatterned nanostructures is controlled by nucleation within the interior, whereas ion milling results in an edge nucleation process with an unpredicted temperature dependence of the reversal field. {\textcopyright} 2008 U.S. Government.",

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AU - Shaw, Justin M.

AU - Russek, Stephen E.

AU - Thomson, Thomas

AU - Donahue, Michael J.

AU - Terris, Bruce D.

AU - Hellwig, Olav

AU - Dobisz, Elizabeth

AU - Schneider, Michael L.

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N2 - We demonstrate that magnetic reversal in perpendicularly magnetized nanostructures is highly dependent on the nature and condition of the edges. To understand the impact of edge damage, we compare nanostructures created by ion milling to those prepared on prepatterned substrates. The size- and temperature-dependent reversal properties of 25 nm- 1 μm diameter nanodots show that reversal in prepatterned nanostructures is controlled by nucleation within the interior, whereas ion milling results in an edge nucleation process with an unpredicted temperature dependence of the reversal field. © 2008 U.S. Government.

AB - We demonstrate that magnetic reversal in perpendicularly magnetized nanostructures is highly dependent on the nature and condition of the edges. To understand the impact of edge damage, we compare nanostructures created by ion milling to those prepared on prepatterned substrates. The size- and temperature-dependent reversal properties of 25 nm- 1 μm diameter nanodots show that reversal in prepatterned nanostructures is controlled by nucleation within the interior, whereas ion milling results in an edge nucleation process with an unpredicted temperature dependence of the reversal field. © 2008 U.S. Government.

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DO - 10.1103/PhysRevB.78.024414

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VL - 78

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 2

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ER -

Reversal mechanisms in perpendicularly magnetized nanostructures

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