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- Title
Microstructure and magnetic properties of fcc-FePt/<italic>L</italic>1<sub>0</sub>-FePt exchange-coupled composite films.
- Authors
Zhang, Yumei; Zhao, Liang; Li, Shanshan; Liu, Mei; Feng, Ming; Li, Haibo
- Abstract
The fcc-FePt/<italic>L</italic>10-FePt exchange-coupled composite films were prepared on (100)-oriented single-crystal MgO substrates using dc magnetron sputtering. The effects of fcc-FePt layer thickness and annealing temperature on microstructure and magnetic properties of fcc-FePt/<italic>L</italic>10-FePt films have been investigated. The fcc-FePt/<italic>L</italic>10-FePt film with high (001) orientation, low coercivity field, and strong soft/hard magnetic exchange-coupled interaction is obtained with 4 nm fcc-FePt layer. After annealing, there are interdiffusion and coalescence between fcc-FePt and <italic>L</italic>10-FePt layers. With increasing annealing temperature, (001) orientation and perpendicular magnetic anisotropy of the annealed films decrease, and coercivities increase. The annealed films have a relatively small value of switching field distribution.
- Subjects
MICROSTRUCTURE; MAGNETIC properties of metallic films; MAGNESIUM oxide; MAGNETRON sputtering; THICKNESS measurement
- Publication
Applied Physics A: Materials Science & Processing, 2018, Vol 124, Issue 2, p0
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-018-1587-4