Control of interlayer magnetostatic coupling in submicron-sized FeAuFe rings

T. Miyawaki; M. Kohda; A. Fujita; J. Nitta

doi:10.1063/1.2830702

Control of interlayer magnetostatic coupling in submicron-sized FeAuFe rings

T. Miyawaki, M. Kohda, A. Fujita, J. Nitta

ENG - Materials Science

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

3 Citations (Scopus)

Abstract

We have investigated the inner diameter dependence of magnetostatic coupling in FeAuFe pseudospin valve (PSV) rings by the magneto-optical Kerr effect. Hysteresis loops of the soft layer with smaller inner diameter are considerably different from those found in single-layer rings maintaining the outer diameter. This is explained by the attenuation of circumferential shape anisotropy as the inner diameter decreases. The magnetostatic coupling is enhanced between the two Fe layers due to an increase of a stray field from ring edges. These results indicate that the magnetostatic coupling in the PSV rings is controlled by changing the inner diameter.

Original language	English
Article number	032502
Journal	Applied Physics Letters
Volume	92
Issue number	3
DOIs	https://doi.org/10.1063/1.2830702
Publication status	Published - 2008

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10.1063/1.2830702

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title = "Control of interlayer magnetostatic coupling in submicron-sized FeAuFe rings",

abstract = "We have investigated the inner diameter dependence of magnetostatic coupling in FeAuFe pseudospin valve (PSV) rings by the magneto-optical Kerr effect. Hysteresis loops of the soft layer with smaller inner diameter are considerably different from those found in single-layer rings maintaining the outer diameter. This is explained by the attenuation of circumferential shape anisotropy as the inner diameter decreases. The magnetostatic coupling is enhanced between the two Fe layers due to an increase of a stray field from ring edges. These results indicate that the magnetostatic coupling in the PSV rings is controlled by changing the inner diameter.",

author = "T. Miyawaki and M. Kohda and A. Fujita and J. Nitta",

note = "Funding Information: This work was partly supported by Grant-in-Aids from MEXT, JSPS, and the Casio Science Foundation. ",

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T1 - Control of interlayer magnetostatic coupling in submicron-sized FeAuFe rings

AU - Miyawaki, T.

AU - Kohda, M.

AU - Fujita, A.

AU - Nitta, J.

N1 - Funding Information: This work was partly supported by Grant-in-Aids from MEXT, JSPS, and the Casio Science Foundation.

PY - 2008

Y1 - 2008

N2 - We have investigated the inner diameter dependence of magnetostatic coupling in FeAuFe pseudospin valve (PSV) rings by the magneto-optical Kerr effect. Hysteresis loops of the soft layer with smaller inner diameter are considerably different from those found in single-layer rings maintaining the outer diameter. This is explained by the attenuation of circumferential shape anisotropy as the inner diameter decreases. The magnetostatic coupling is enhanced between the two Fe layers due to an increase of a stray field from ring edges. These results indicate that the magnetostatic coupling in the PSV rings is controlled by changing the inner diameter.

AB - We have investigated the inner diameter dependence of magnetostatic coupling in FeAuFe pseudospin valve (PSV) rings by the magneto-optical Kerr effect. Hysteresis loops of the soft layer with smaller inner diameter are considerably different from those found in single-layer rings maintaining the outer diameter. This is explained by the attenuation of circumferential shape anisotropy as the inner diameter decreases. The magnetostatic coupling is enhanced between the two Fe layers due to an increase of a stray field from ring edges. These results indicate that the magnetostatic coupling in the PSV rings is controlled by changing the inner diameter.

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VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 3

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ER -

Control of interlayer magnetostatic coupling in submicron-sized FeAuFe rings

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