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High Frequency Characteristics of Fe65Co35 Alloy Cluster-Assembled Films Prepared by Energetic Cluster Deposition

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Size-monodispersed Fe65 Co35 alloy clusters whose average sizes ranged from 7 to 12 nm were produced by a plasma-gas-condensation (PGC)-type cluster deposition apparatus. Fe65Co35 alloy cluster-assembled films were further prepared at room temperature by energetic cluster deposition method. Positively charged clusters in a cluster beam were accelerated electrically and deposited onto a negatively biased substrate together with neutral clusters from the same cluster source, leading to the formation of a high-density Fe65Co35 alloy cluster-assembled films with good soft magnetic properties. High frequency magnetic characteristics of these films were studied at room temperature using a high-frequency permeameter (RMF-3000, Ryowa). The real part (μ′) of permeability for the Fe65Co35 alloy cluster-assembled films prepared at bias voltage V a = −20 kV has a large value of μ′ = 135 at f = 1.5 GHz, and imaginary part (μ″) of permeability has a maximum (μ″ ≈ 190) at about 2.5 GHz.
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Keywords: CLUSTER-ASSEMBLED FILM; ENERGETIC CLUSTER DEPOSITION; FE65 CO35 CLUSTER; HIGH FREQUENCY CHARACTERISTICS; PERMEABILITY

Document Type: Research Article

Publication date: 2011-12-01

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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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