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

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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.

Original languageEnglish (US)
Number of pages1
JournalWuli Xuebao/Acta Physica Sinica
Issue number9
StatePublished - Sep 1 1997

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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