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Soft Magnetic Properties of Sequential Deposited Co40Fe40B20/SiO2 Multilayer Nanogranular Films for High Frequency Applications

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Abstract:

Multilayer nanogranular films with good soft magnetic properties and high resistivity desired for high frequency applications have been developed in our work. They were prepared by many sequential depositions of thin layers of Co40Fe40B20 and SiO2. After vacuum annealing at 250 °C under a uniform in-plane magnetic field of 100 kA/m for 2 hrs, the [Co40Fe40B20 (1.2 nm)/SiO2 (0.8 nm)]30 multilayer nanogranular films have the hard axis coercivity of 210 A/m, saturation magnetization of 1.05 T, resistivity of 2.06 × 103 μΩ·cm. Moreover, they show an in-plane uniaxial anisotropy of 2.78 kA/m.

Keywords: HIGH FREQUENCY; NANOGRANULAR FILMS; SEQUENTIAL DEPOSITIONS; SOFT MAGNETIC PROPERTIES

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.C196

Publication date: February 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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