Compositional dependence of magnetic and high frequency properties of nanogranular FeCo-TiO{sub 2} films

Journal Article · Wed May 07 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4862080· OSTI ID:22273904

Wang, Yicheng; Zhang, Huaiwu; Wang, Luo; Bai, Feiming ^[1]

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1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054 (China)

A series of soft magnetic nanogranular FeCo-TiO{sub 2} films with different compositions of FeCo were fabricated on Si substrates by co-sputtering FeCo and TiO{sub 2}, and the magnetic and high frequency properties were studied in details. X-ray diffraction analysis confirmed that the films were nanocrystalline/amorphous composites. A high saturation magnetization of 14 kGs, a low coercivity of 5.3 Oe, a FMR frequency of 3.2 GHz, and a high resistivity of 1068 μΩ cm were obtained when the volume fraction of FeCo was 0.68. The excellence electromagnetic properties make the films an excellent candidate for microwave applications.

• OSTI ID: 22273904
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 17 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COBALT
COERCIVE FORCE
CRYSTALS
FERROMAGNETIC RESONANCE
FREQUENCY DEPENDENCE
GHZ RANGE
INTERMETALLIC COMPOUNDS
IRON
MAGNETIZATION
MICROWAVE RADIATION
NANOSTRUCTURES
SPUTTERING
SUBSTRATES
THIN FILMS
TITANIUM OXIDES
X-RAY DIFFRACTION