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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2003.3
- 수록면
- 13 - 17 (5page)
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The longitudinal magnetooptical Kerr effect was used to analyse magnetic domains in soft magnetic (Fe_(97)Al₃)_(85)N_(15)/Al₂O₃ multilayers in order to get microscopic understanding of interlayer exchange coupling. The measuring system consists of a Kerr microscope, a CCIR camera (with an 8-bit framegrabber), 16 bit digital camera and computer system for real-time image processing and to control external magnetic field and cameras. The strength of ferromagnetic (FM) coupling as a function of the spacer thickness of Al₂O₃ was investigated. It was found that strong FM-coupling, strong uniaxial anisotropy and coherent rotation of the magnetization have been observed for the spacer thickness in the range of 0.2 ㎚ ≤ t ≤ 1 ㎚, however, weak FM-coupling, patch domains and 360°-walls occur for the spacer thickness of t = 2.5 ㎚. At a spacer thickness of t ≥ 5 ㎚ transition takes place from weak FM-coupling to the decoupled state where complex interlayer interactions and different types of the domain walls were observed.
목차
Abstract
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusion
References
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