한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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- Pages.242-242
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- 2016
Fe3O4/CoFe2O4 superlattices; MBE growth and magnetic properties
- Quang, Van Nguyen (Department of Physics, and Energy Harvest Storage Research Center, University of Ulsan) ;
- Shin, Yooleemi (Institute of Physics and Chemistry for Materials of Strasbourg) ;
- Duong, Anh Tuan (Department of Physics, and Energy Harvest Storage Research Center, University of Ulsan) ;
- Nguyen, Thi Minh Hai (Department of Physics, and Energy Harvest Storage Research Center, University of Ulsan) ;
- Cho, Sunglae (Department of Physics, and Energy Harvest Storage Research Center, University of Ulsan) ;
- Meny, Christian (Institute of Physics and Chemistry for Materials of Strasbourg)
- 발행 : 2016.02.17
초록
Magnetite, Fe3O4, is a ferrimagnet with a cubic inverse spinel structure and exhibits a metal-insulator, Verwey, transition at about 120 K.[1] It is predicted to possess as half-metallic nature, 100% spin polarization, and high Curie temperature (850 K). Cobalt ferrite is one of the most important members of the ferrite family, which is characterized by its high coercivity, moderate magnetization and very high magnetocrystalline anisotropy. It has been reported that the CoFe2O4/Fe3O4 bilayers represent an unusual exchange-coupled system whose properties are due to the nature of the oxide-oxide super-exchange interactions at the interface [2]. In order to evaluate the effect of interface interactions on magnetic and transport properties of ferrite and cobalt ferrite, the CoFe2O4/Fe3O4 superlattices on MgO (100) substrate have been fabricated by molecular beam epitaxy (MBE) with the wave lengths of 50, and