Ni-Zn Ferrite with Graded Magnetic Anisotropy for High Frequency Applications.

• Hiratsuka Nobuyuki

  Graduate School of Science and Engineering, Saitama University

• Nakamura Yohei

  Graduate School of Science and Engineering, Saitama University

• Kakizaki Koichi

  Graduate School of Science and Engineering, Saitama University

• Kobayashi Hidehiko

  Graduate School of Science and Engineering, Saitama University

Bibliographic Information

Other Title

• 傾斜機能材料　　高周波用異方性傾斜Ｎｉ‐Ｚｎフェライト
• コウシュウハヨウ イホウセイ ケイシャ Ni-Zn フェライト

Abstract

Ni-Zn ferrites with graded magnetic anisotropy for high frequency of megahertz order were prepared by the addition of CoO. When the CoO content increased, resonance frequency was expanded. However, initial permeability was decreased and anisotropy field was increased. Therefore we tried to prepare Ni-Zn ferrite with high initial permeability and high resonance frequency by the addition of graded CoO content. Troidal core samples were made to layer Ni-Zn ferrite with different CoO content. As the result, the sample which had large CoO content with inner layer, steep gradation and little Ni-Zn ferrite with outer layer showed excellent high frequency characteristics. The Ni-Zn ferrite added CoO with graded CoO content 0, 5, 0 wt.% had initial permeability of 80 for 20-60 MHz.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 45 (3), 248-252, 1998

  Japan Society of Powder and Powder Metallurgy

Keywords

• functionally graded material
• Ni-Zn ferrite
• magnetic anisotropy
• initial permeability
• resonance frequency
• Cobalt oxide

Details

• CRID: 1390001206307360768
• NII Article ID: 10002015233
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.45.248
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 4447669
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4447669
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed