• Title/Summary/Keyword: magnetization reversal

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Magnetic Domain Structure in Laser-Annealed NiFe/FeMn Bilayers (FeMn/NiFe에서 Laser 열처리에 의한 자구연구)

  • Choi, S.D.;Kim, S.W.;Jin, D.H.;Lee, M.S.;Ahn, J.H.;Joo, H.W.;Kim, Y.S.;Lee, K.A.;Lee, S.S.;Hwang, D.G.
    • Journal of the Korean Magnetics Society
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    • v.14 no.6
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    • pp.224-227
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    • 2004

  • We have studied local magnetization reversal by laser annealing in exchange biased NiFe/FeMn bilayer. Local magnetization reversal was performed by using the DPSS laser under external magnetic field of 600G. When the laser illuminated the patterned film with the power of above 300 mW during 15 min, a magnetoresistance (MR) curve with symmetric peaks at the opposite field was obtained due to the local reversal of exchange biasing. The direction of exchange anisotropy in the locally reversed region can be restored by local laser annealing under alternating magnetic field, even if its MR peak was reduced by the damage and interdiffusion. The magnetic domain structure of the locally reversed region was measured by MFM. The new domains were generated by laser annealing near the exposed area.

  • https://doi.org/10.4283/JKMS.2004.14.6.224 인용 PDF KSCI