Sarkar, Partha and Roy, Rajat K and Mitra, A and Panda, A K and Churyukanovaa, Margarita and Kaloshkina, Sergey (2012) Effect of Nb and Cr incorporation on the structural and magnetic properties of rapidly quenched FeCoSiB microwires. Journal of Magnetism and Magnetic Materials, 324 (16). pp. 2543-2546.
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Rapidly quenched microwires with a nominal composition of Fe 39Co 39Si 8B 14 (#A O), Fe 37Co 37Nb 4Si 8B 14 (#A N) and Fe 36Co 36Nb 4Cr 2Si 8B 14 (#A NC) have been investigated. Devitrification of as-quenched microwires showed that crystallization temperatures increased with simultaneous incorporation of Nb and Cr as in #A NC alloy. Addition of these elements also contributed to an increase in activation energy in #A N and #A NC alloys. Nb addition reduced the particle size, which became much finer in the case of the Cr-containing alloy. Although Nb addition did not have much effect on lowering the Curie temperature T C of the amorphous phase, Cr substitution lowered T C to 698 K from high values of 785 K and 787 K observed in the #A O and #A NC alloys, respectively. However, the Cr addition revealed a better Giant magneto-impedance (GMI) response compared to the other alloys. Such improved GMI properties in the Cr-containing alloy are attributed to lower values of the coercivity and magnetostriction in the alloy containing both Nb and Cr. © 2012 Elsevier B.V. All rights reserved.
|Uncontrolled Keywords:||Giant magneto-impedance; Rapidly quenched; Amorphous wire; Crystallization; Curie temperature|
|Divisions:||Material Science and Technology|
|Deposited By:||Dr. A K Sahu|
|Deposited On:||18 Apr 2012 14:27|
|Last Modified:||29 Jun 2012 10:26|
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