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The effect of carbon on magnetostrictive properties of the Tb0.3Dy0.7Fe2 alloy

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3 Author(s)
Chen, F.M. ; Dept. of Mater. Sci. & Eng., Tsinghua Univ., Beijing, China ; Fang, J.S. ; Chin, T.S.

The effect of carbon on magnetostrictive properties and microstructure of the quarternary Tb0.3Dy0.7Fe2Cx alloys prepared by arc-melting and homogenization have been investigated. Magnetic properties, X-ray diffraction and magnetostriction studies were carried out. With increasing x, saturation magnetization decreases substantially, but the magnetostriction measured at a field of 2T(λ2T) increases slightly with x<0.1 (0.43 wt.%). By further increasing x, λ2T decreases rapidly, and a second phase, (Dy,Tb)Fe3C with Curie temperature 340°C, appears, and it becomes the dominant phase at x⩾0.2

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Magnetics, IEEE Transactions on  (Volume:32 ,  Issue: 5 )