Substantial enhancement in the performance of a spin valve through the ultra-thin insertion of partially oxidized Fe

Jangsik In; Yoonsung Han; Jaechul Shim; Sunghoon Kim; Jongill Hong

doi:10.1088/0022-3727/40/10/004

Substantial enhancement in the performance of a spin valve through the ultra-thin insertion of partially oxidized Fe

Jangsik In, Yoonsung Han, Jaechul Shim, Sunghoon Kim, Jongill Hong

Department of Materials Science and Engineering

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

Abstract

We found that the ultra-thin insertion of a mix of Fe and Fe oxide in the pinned layer substantially enhanced the performance of a spin valve. With the exchange bias field kept large, the giant magnetoresistance (GMR) reached 11.3%, which corresponded to a 46% increase in GMR compared with the GMR of spin valves without the insertion. We attribute this considerable enhancement to spin-dependent scattering boosted by the combined effect of the modified local electronic structures at the Fe and specular reflections at the α-Fe ₂O₃ of the insertion.

Original language	English
Article number	004
Pages (from-to)	3038-3042
Number of pages	5
Journal	Journal of Physics D: Applied Physics
Volume	40
Issue number	10
DOIs	https://doi.org/10.1088/0022-3727/40/10/004
Publication status	Published - 2007 May 21

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

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10.1088/0022-3727/40/10/004

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abstract = "We found that the ultra-thin insertion of a mix of Fe and Fe oxide in the pinned layer substantially enhanced the performance of a spin valve. With the exchange bias field kept large, the giant magnetoresistance (GMR) reached 11.3%, which corresponded to a 46% increase in GMR compared with the GMR of spin valves without the insertion. We attribute this considerable enhancement to spin-dependent scattering boosted by the combined effect of the modified local electronic structures at the Fe and specular reflections at the α-Fe 2O3 of the insertion.",

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AU - In, Jangsik

AU - Han, Yoonsung

AU - Shim, Jaechul

AU - Kim, Sunghoon

AU - Hong, Jongill

PY - 2007/5/21

Y1 - 2007/5/21

N2 - We found that the ultra-thin insertion of a mix of Fe and Fe oxide in the pinned layer substantially enhanced the performance of a spin valve. With the exchange bias field kept large, the giant magnetoresistance (GMR) reached 11.3%, which corresponded to a 46% increase in GMR compared with the GMR of spin valves without the insertion. We attribute this considerable enhancement to spin-dependent scattering boosted by the combined effect of the modified local electronic structures at the Fe and specular reflections at the α-Fe 2O3 of the insertion.

AB - We found that the ultra-thin insertion of a mix of Fe and Fe oxide in the pinned layer substantially enhanced the performance of a spin valve. With the exchange bias field kept large, the giant magnetoresistance (GMR) reached 11.3%, which corresponded to a 46% increase in GMR compared with the GMR of spin valves without the insertion. We attribute this considerable enhancement to spin-dependent scattering boosted by the combined effect of the modified local electronic structures at the Fe and specular reflections at the α-Fe 2O3 of the insertion.

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JF - Journal of Physics D: Applied Physics

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ER -

Substantial enhancement in the performance of a spin valve through the ultra-thin insertion of partially oxidized Fe

Abstract

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