Magnetoresistance, coercivity and stability for the spin valve [NiFe/Cu/Co/Cu] multilayers

Rui Yi Fang; Ying Lei Yu; Ting Yong Chen; Dao Sheng Dai

Magnetoresistance, coercivity and stability for the spin valve [NiFe/Cu/Co/Cu] multilayers

Rui Yi Fang, Ying Lei Yu, Ting Yong Chen, Dao Sheng Dai

Arizona State University

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

Abstract

The spin valve [NiFe/Cu/Co/Cu]_N multilayers were prepared by using electron bean method. The influences of thickness on the magnetoresistance (MR) were studied. We also investigated the stability of MR and tried to reduce the center field H₀, which is the center magnetic field of the linear region in the MR-H curve. Under optimum seeking conditions, we have deposited many samples with low center field H₀ in range of (10-20) (10³/4π) Am^-1, the merit is larger than 0.2% × ((10³/4π)Am^-1)^-1. The variation of MR in the linear region in the MR-H curve is reversible during repeatedly magnetizing. After annealed at 200°C for 15 minutes, MR increased and H_rm reduced with a small amount. The change of MR is less than 0.3% for several samples after aging one year in the dry air chamber and room temperature.

Original language	English (US)
Number of pages	1
Journal	Wuli Xuebao/Acta Physica Sinica
Volume	46
Issue number	9
State	Published - Sep 1 1997

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

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title = "Magnetoresistance, coercivity and stability for the spin valve [NiFe/Cu/Co/Cu] multilayers",

abstract = "The spin valve [NiFe/Cu/Co/Cu]N multilayers were prepared by using electron bean method. The influences of thickness on the magnetoresistance (MR) were studied. We also investigated the stability of MR and tried to reduce the center field H0, which is the center magnetic field of the linear region in the MR-H curve. Under optimum seeking conditions, we have deposited many samples with low center field H0 in range of (10-20) (103/4π) Am-1, the merit is larger than 0.2% × ((103/4π)Am-1)-1. The variation of MR in the linear region in the MR-H curve is reversible during repeatedly magnetizing. After annealed at 200°C for 15 minutes, MR increased and Hrm reduced with a small amount. The change of MR is less than 0.3% for several samples after aging one year in the dry air chamber and room temperature.",

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T1 - Magnetoresistance, coercivity and stability for the spin valve [NiFe/Cu/Co/Cu] multilayers

AU - Fang, Rui Yi

AU - Yu, Ying Lei

AU - Chen, Ting Yong

AU - Dai, Dao Sheng

PY - 1997/9/1

Y1 - 1997/9/1

N2 - The spin valve [NiFe/Cu/Co/Cu]N multilayers were prepared by using electron bean method. The influences of thickness on the magnetoresistance (MR) were studied. We also investigated the stability of MR and tried to reduce the center field H0, which is the center magnetic field of the linear region in the MR-H curve. Under optimum seeking conditions, we have deposited many samples with low center field H0 in range of (10-20) (103/4π) Am-1, the merit is larger than 0.2% × ((103/4π)Am-1)-1. The variation of MR in the linear region in the MR-H curve is reversible during repeatedly magnetizing. After annealed at 200°C for 15 minutes, MR increased and Hrm reduced with a small amount. The change of MR is less than 0.3% for several samples after aging one year in the dry air chamber and room temperature.

AB - The spin valve [NiFe/Cu/Co/Cu]N multilayers were prepared by using electron bean method. The influences of thickness on the magnetoresistance (MR) were studied. We also investigated the stability of MR and tried to reduce the center field H0, which is the center magnetic field of the linear region in the MR-H curve. Under optimum seeking conditions, we have deposited many samples with low center field H0 in range of (10-20) (103/4π) Am-1, the merit is larger than 0.2% × ((103/4π)Am-1)-1. The variation of MR in the linear region in the MR-H curve is reversible during repeatedly magnetizing. After annealed at 200°C for 15 minutes, MR increased and Hrm reduced with a small amount. The change of MR is less than 0.3% for several samples after aging one year in the dry air chamber and room temperature.

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Magnetoresistance, coercivity and stability for the spin valve [NiFe/Cu/Co/Cu] multilayers

Abstract

ASJC Scopus subject areas

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