Effects of CrRu-SiO{sub x} underlayer with MgO intermediate layer on the microstructure and magnetic properties of FePt-C thin film

Journal Article · Fri Apr 01 04:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3564946· OSTI ID:21538252

Li, H H ^[1]; Hu, J F ^[2]; Ju, G ^[3]; Chow, G M; Chen, J S ^[1]

---

1. Department of Materials Science and Engineering, National University of Singapore, Singapore 117576 (Singapore)
2. Data Storage Institute, Agency for Science, Technology and Research (A-STAR), Singapore 117608 (Singapore)
3. Seagate Technology, Fremont, California 94538 (United States)

The effect of the CrRu-SiO{sub x} underlayer with different doping concentrations and the thickness of the CrRu underlayer on the microstructure and magnetic properties of FePt-C films were investigated. FePt films exhibited L1{sub 0} (001) texture at various SiO{sub x} doping concentrations. The coercivities were as large as 28 kOe and the slope of M-H loop at coercivity was approximately equal to 1, suggesting that FePt grains were well exchange decoupled. Grain size was only slightly reduced after introducing the CrRu-SiO{sub x} underlayer. But the contact angle between the FePt grains and the MgO intermediate layer around 135 deg. indicated the a MgO intermediate layer was not favored for smaller grains to obtain good L1{sub 0} (001) texture. X-ray photoelectron spectroscopy in-depth profile showed that Si diffused into a whole FePt-C layer and C diffused to the film surface.

• OSTI ID: 21538252
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 7 Vol. 109; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALKALINE EARTH METAL COMPOUNDS
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CARBON
CHALCOGENIDES
CHROMIUM ALLOYS
COERCIVE FORCE
DIFFUSION
DOPED MATERIALS
ELECTRON SPECTROSCOPY
ELEMENTS
EXCHANGE INTERACTIONS
FILMS
GRAIN SIZE
INTERACTIONS
INTERFACES
IRON ALLOYS
LAYERS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MAGNETIC PROPERTIES
MAGNETISM
MATERIALS
MICROSTRUCTURE
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
RUTHENIUM ALLOYS
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SPECTROSCOPY
THIN FILMS
TRANSITION ELEMENT ALLOYS
X-RAY PHOTOELECTRON SPECTROSCOPY