Enhancement of GHz electromagnetic wave absorption characteristics in aligned M-type barium ferrite Ba1-xLaxZnxFe12-x-y(Me0.5Mn0.5)yO19 (x=0.0-0.5; y=1.9-3.0, Me:: Zr, Sn) by metal substitution

被引：83

作者：

Kagotani, T.

Fujiwara, D.

Sugimoto, S.

Inomata, K.

Homma, M.

机构：

[1] Tohoku Univ, Sendai, Miyagi 9808579, Japan

[2] Tohoku Polytech Coll, Tsukidate, Miyagi 9872223, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

microwave absorption; M-type Ba ferrite; GHz band; magnetic resonance; EMI;

D O I：

10.1016/j.jmmm.2003.12.878

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The resonance absorption properties depend on the complex permeability mu = mu' - j mu", particularly mu" = M-s/2H(A)alpha and x of substitution amount for Ba and y of that one for Fe on the absorption properties of Ba ferrite compound. The c-axis aligned Zr-substituted samples (x = 0.0; y = 1.4) showed M-s = 76 mu Wm/kg, H-A = 0.21 MA/m, and mu' = 7.2 and mu" = 7.0. These mu' and mu" are significantly larger than those for (TiMn)-substituted samples. Sn or Zr is concluded to be effective in enhancing the absorption characteristics of M-type Ba ferrite absorber. (C) 2003 Elsevier B. V. All rights reserved.

引用

页码：E1813 / E1815

页数：3

共 4 条

[1]

OKAYAMA K, 1998, J MAGN SOC JPN, V22, P297

[2] M-type ferrite composite as a microwave absorber with wide bandwidth in the GHz range [J].

Sugimoto, S ;

Kondo, S ;

Okayama, K ;

Nakamura, H ;

Book, D ;

Kagotani, T ;

Homma, M ;

Ota, H ;

Kimura, M ;

Sato, R .

IEEE TRANSACTIONS ON MAGNETICS, 1999, 35 (05) :3154-3156

[3] Compositional dependence of tbe electromagnetic wave absorption properties of BaFe12-x-yTixMnyO19 in the GHz frequency range [J].

Sugimoto, S ;

Maeda, Y ;

Okayama, K ;

Maeda, T ;

Ota, H ;

Kimura, M ;

Book, D ;

Nakamura, H ;

Kagotani, T ;

Homma, M .

MATERIALS TRANSACTIONS JIM, 1999, 40 (09) :887-890

[4]

Taguchi H., 1997, J. Magn. Soc. Jpn., V21, P901

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