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논문 기본 정보

자료유형
학술저널
저자정보
Dong-Jun Kim (KAIST) Jin-Seok Park (KEPCO E&C) Ho Jin Ryu (KAIST) Jong-Ryul Jeong (Chungnam National University) Chang-Kyu Chung (KEPCO E&C) Byong-Guk Park (KAIST)
저널정보
한국자기학회 Journal of Magnetics Journal of Magnetics Vol.21 No.2
발행연도
2016.6
수록면
159 - 163 (5page)

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초록· 키워드

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Antiferromagnet (AFM)/ferromagnet (FM) bilayer structures are widely used in the magnetic devices of sensor and memory applications, as AFM materials can induce unidirectional anisotropy of the FM material via exchange coupling. The strength of the exchange coupling is known to be sensitive to quality of the interface of the AFM/FM bilayers. In this study, we utilize proton irradiation to modify the interface structures and investigate its effect on the magnetic properties of AFM/FM structures, including the exchange bias and magnetic thermoelectric effect. The magnetic properties of IrMn/CoFeB structures with various IrMn thicknesses are characterized after they are exposed to a proton beam of 3 MeV and 1~5 × 10<SUP>14</SUP> ions/cm². We observe that the magnetic moment is gradually reduced as the amount of the dose is increased. On the other hand, the exchange bias field and thermoelectric voltage are not significantly affected by proton irradiation. This indicates that proton irradiation has more of an influence on the bulk property of the FM CoFeB layer and less of an effect on the IrMn/CoFeB interface.

목차

1. Introduction
2. Experiment
3. Results and Discussion
4. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2017-428-000656274