Relaxation Phenomena of MgZn Ferrites.

• Murase Taku

  Materials Research Center, TDK Corporation

• Igarashi Katsuhiko

  Materials Research Center, TDK Corporation

• Sawai Jun

  Materials Research Center, TDK Corporation

• Nomura Takeshi

  Materials Research Center, TDK Corporation

Bibliographic Information

Other Title

• 磁性材料の化学　Ｉ　ＭｇＺｎフェライトの緩和現象について
• MgZn フェライト ノ カンワ ゲンショウ ニ ツイテ

Abstract

The gradual lowering of initial permeability(μ_i) with increasing frequency is said to be a relaxation phenomenon. The lowering of μi with frequency is improved by CuO substitution for MgO in MgZn ferrite. From the measuring results of the temperature dependence of tan δ, the activation enegy of the relaxation is calculated as approximately 0.43eV. The effect of the parameters in making process on the lattice defects was investigated with special reference to electric conductivity, microstructure and disaccommodation. From the results of time disaccommodation, the change in permeability for MgCuZn ferrites was found to be larger than that of MgZn ferrite. Furthermore, the lowering of permeability with time for both ferrites was regarded as being over 500 hours.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 43 (12), 1399-1404, 1996

  Japan Society of Powder and Powder Metallurgy

Keywords

• MgCuZn ferrite
• relaxation phenomenon
• disaccommodation

Details

• CRID: 1390001206309064064
• NII Article ID: 10002261136
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.43.1399
• COI: 1:CAS:528:DyaK2sXntl2qtw%3D%3D
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 4118673
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4118673
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed