Kumari, Seema and Chattoraj, I and Pal, S K and Mitra, A (2006) Study of Giant Magneto-Impedance Behavior in Co–Fe Based Amorphous/Nanocrystalline Materials. Materials and Manufacturing Processes, 21 . pp. 683-686.
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Giant magneto-impedance (GMI) behavior have been studied in melt spun Co71−XFeXCr7Si8B14 (X = 0 2 32 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 5mA and 4MHz frequency using a spectrum analyzer. The GMI ratio increased with the increase of the applied dc field and became maximum at a field Hk known as the anisotropy field of the materials. The maximum of GMI ratio (GMImax) 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.
|Uncontrolled Keywords:||Amorphous ribbons; Giant magnetoimpedance; Magnetostriction|
|Divisions:||Corrosion and Surface Engineering|
|Deposited By:||INVALID USER|
|Deposited On:||01 Sep 2010 16:10|
|Last Modified:||03 Jan 2012 12:54|
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