• Title/Summary/Keyword: Soft magnetics

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Soft Magnetic Applications for RF IT devices

  • Masahiro Yamaguchi;Kim, Ki-Hyeon;Seok Bae;Shinji Ikeda;Arai, Ken-Ichi
    • Proceedings of the Korean Magnestics Society Conference
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    • 2002.12a
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    • pp.11-11
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    • 2002

  • Huge applications of soft magnetic films can be expected as integrated passives in the infest IT devices, including CMOS compatible RF integrated inductors and transformers, transmission line devices, electromagnetic noise countermeasure, sensors, etc. A new 1MHz-9GHz permeameter has been completed and clarified the possibility of modern magnetic films for applications in integrated passives. The films evaluated include CoNbZr, CoZro, CoAlPdO, electroplated NiZn(Co) ferrite, etc. (omitted)

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Magnetic Properties of FeCuNbSiB Nanocrystalline Alloy Powder Cores Using Ball-milled Powder

  • Kim, G. H.;T. H. Noh;Park, G. B.;Kim, K. Y.
    • Proceedings of the Korean Magnestics Society Conference
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    • 2002.12a
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    • pp.202-203
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    • 2002

  • Ribbon type nanocrystalline alloy cores have shown excellent soft magnetic properties in the high frequency range because of small crystalline anisotropy and nearly zero magnetostriction[1]. In present, however ribbon alloys gives some limit in applications such as a large inductor and reactors of PFC circuit, which are required good DC bias property and low loss in the high frequency. Powder alloys with ultra fine grain structure can be an important way to overcome this kind of disadvantage, and to improve the high frequency soft magnetic properties in conventional metallic powder cores[2]. (omitted)

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Modified Magnetism at Buried Co/Pd Interface: Depth-Resolved Magnetic Circular Dichroism Study using Soft X-ray Standing Waves

  • Kim, Sang-Koog;J. B. Kortright
    • Proceedings of the Korean Magnestics Society Conference
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    • 2000.09a
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    • pp.207-216
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    • 2000

  • Soft x-ray standing waves produced by a multilayer interference substrate add depth-sensitivity to magnetic circular dichroism to resolve changes in Co magnetism across a 10 ${\AA}$ distance from the Co center to the Co-Pd interface of a Pd/Co/Pd trilayer having in-plane magnetization. Large enhancements of in-plane orbital and spin magnetic moments, as well as the number of d holes, are strongly localized in thin interface layer. These results provide new insight into the phenomenon of magnetic anisotropy at buried interfaces, and suggest a broad applicability of such standing wave measurements to interface magnetism studies.

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