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Magnetic properties of nanocomposite Nd2Fe14B-Fe films

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4 Author(s)
Tsai, Jai-Lin ; Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Tsung-Shune Chin ; Shih, Jhy-Chau ; Chen, Shi-Kun

Nanocomposite Nd2Fe14B-Fe two-phase films have been prepared by dc magnetron sputtering. Single-phase demagnetization behavior was observed in films with Fe content up to 30 vol%. Coercivity decreases while residual magnetization increases with increasing iron content higher than 17 vol%. The optimum coercivity and residual magnetization are 8.2 kOe, 6.7 kG, respectively, from a Nd2Fe14B-17 vol% Fe film. Typical grain sizes are 50 nm and 10 nm for the Nd2Fe14B and α-Fe phases, respectively, observed in a Nd2Fe14B-22 vol% Fe film

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Magnetics, IEEE Transactions on  (Volume:35 ,  Issue: 5 )