A new composite material with high saturation magnetization density and high electrical resistivity

被引：10
|
作者：
Hirota, K
Takano, Y
Yoshinaka, M
Yamaguchi, O [1 ]
机构：
[1] Doshisha Univ, Fac Engn, Dept Mol Sci & Technol, Kyoto 6100321, Japan
[2] Tanaka Galvanizing Co Ltd, Nishiyodogawa Ku, Osaka 5550012, Japan
来源：
MATERIALS RESEARCH BULLETIN | 2000年 / 35卷 / 07期
关键词：
composites; magnetic materials; electron microscopy; impedance spectroscopy; electrical properties;
D O I：
10.1016/S0025-5408(00)00308-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Dense composite materials (98.6% of theoretical) consisting of Super Sendust (86.5Fe-6Si-4Al-3.5Ni wt%) and MgFe2O4 (75/25 vol%), which were fabricated by spark plasma sintering for 5 min at 850 degrees C and 130 MPa, exhibit a high saturation magnetization density B-s of 1.2 T and high electrical resistivity rho of 1 x 10(-2) Omega.m. Permeabilities mu >1000 at 1 kHz were obtained. Fine ferrite grains (similar to 0.6 mu m) were located at the boundaries of the large spherical grains of Super Sendust (similar to 30 mu m). (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1137 / 1141
页数：5
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