Transactions of Nonferrous Metals Society of China, 2006-06, Vol.16 (B01), p.249-252
2006
Volltextzugriff (PDF)
Details
- Autor(en) / Beteiligte
- Titel
- Structure and magnetic properties of amorphous and polycrystalline Fe3O4 thin films
- Ist Teil von
- Transactions of Nonferrous Metals Society of China, 2006-06, Vol.16 (B01), p.249-252
- Ort / Verlag
- School of Micro-electronics and Solid-state Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
- Erscheinungsjahr
- 2006
- Quelle
- Alma/SFX Local Collection
- Beschreibungen/Notizen
- Half-metallic Fe3O4 films prepared by-DC magnetron reactive sputtering with a tantalum（Ta） buffer layer was investigated. Primary emphasis is placed on the structural impact on its magnetic properties. The experimental results show that the amorphous Fe3O4 films exhibit a superparamagnetic response at a large-scale from 20 nm to 150 nm, and the magnetoresistance （MR） isn＇t detected. By contrast, the polycrystalline Fe3O4 films possess large saturation magnetization Ms of 420 A/（kg.cm） and a clear magnetoresistance with a field of 40 kA/m. The unusual properties for the amorphous Fe3O4 film are attributed to the existing large density of the similar structure as anti-phase boundaries in the film.