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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.6
- 수록면
- 126 - 132 (7page)
- DOI
- 10.4283/JMAG.2020.25.2.126
이용수
초록· 키워드
오류제보하기
Herein, a ferromagnetic cobalt (Co) film was deposited on a VO₂ film exhibiting a structural phase transition from monoclinic to tetragonal at ~340 K to investigate the magnetoelastic effect caused by a phase-transition-induced strain. First, (100) and (101) VO₂ films with thicknesses of 11-43 nm were grown on Al₂O₃ using pulsed laser deposition, and 2.5-nm-thick Co films were deposited on top of them via sputtering. The magneto-optic Kerr effect hysteresis loops were measured with the temperature variation across the structural phase transition temperature of VO₂. Upon heating, an increase in the coercive field of the Co layer was observed at the structural phase transition temperature of VO₂, suggesting a magnetoelastic coupling between the Co and VO₂ layers. The coercive field increment diminished with decreasing VO₂ thickness, and it disappeared as the VO₂ became thinner than a critical value of ~11 nm. These results imply that a phase-transition-induced strain in the VO₂ layer can be used to change the coercive field of the neighboring magnetic layer.
목차
1. Introduction
2. Experiments
3. Results and Discussions
4. Conclusions
References
참고문헌 (28)
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UCI(KEPA) : I410-ECN-0101-2020-428-000848171