Giant magneto-impedance (GMI) behavior have been studied in melt spun Co71-XFeXCr7Si8B14 ( X = 0, 2, 3, 2, 4, 6, 8, and 12 at%) alloys. The addition of Fe in the system changed the saturation magnetostriction constant from negative to positive values. The GMI property was measured with a driving current of 5 mA and 4 MHz frequency using a spectrum analyzer. The GMI ratio increased with the increase of the applied dc field and became maximum at a field H-k known as the anisotropy field of the materials. The maximum of GMI ratio (GMI(max)) depended on the Fe content and was maximum (12%) for Fe = 4 at% for the alloys in the as-melt spun state. Substantial increase of GMImax to 66% for Fe = 4 at% was observed after annealing the sample at 673 K.
机构:
Cent Iron & Steel Res Inst, Natl Amorphous & Nanocrystalline Alloy Engn Res C, Beijing 100081, Peoples R ChinaCent Iron & Steel Res Inst, Natl Amorphous & Nanocrystalline Alloy Engn Res C, Beijing 100081, Peoples R China
Zhou, SX
Hu, JF
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机构:Cent Iron & Steel Res Inst, Natl Amorphous & Nanocrystalline Alloy Engn Res C, Beijing 100081, Peoples R China
Hu, JF
Quan, BY
论文数: 0引用数: 0
h-index: 0
机构:Cent Iron & Steel Res Inst, Natl Amorphous & Nanocrystalline Alloy Engn Res C, Beijing 100081, Peoples R China
Quan, BY
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,
2001,
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: 954
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