Effect of External Electric Field on Phase Selection and Stability of Amorphous(Nd_(0.1)Fe_(0.9))_3B Alloy


Li Shandong~(1 ;2*), Tang Jiancheng, Yuan Zuanru Gu Benxi, Du Youwei)~1(1.Depantment of Physics, Fujian Normal University, Fuzhou 350007, China; 2. National Laboratory of Solid State Microstructure,Department of Physics, Nanjing University, Nanjing 210093, China; 3. Center for Materials Analysis, Nanjing University, Nanjing 210093, China)


The effect of an external electric field on the crystallization behavior of amorphous(Nd_(0.1)Fe_(0.9))_3B alloy was investigated. The crystallization product of Nd_2Fe_(23)B_3 phase was obtained for this amorphous alloy annealed at 923 K for 300 s in the presence of an external electric field of 300 kV·m~(-1)(50 Hz); while the crystallization products are Nd_(1.1)Fe_4B_4, α-Fe, and Fe_3B phases under the same annealing condition except for free-electric field. On the other hand, the samples were annealed at 1023 K, which is higher than the decomposition temperature of metastable Nd_2Fe_(23)B_3 phase, for 600 s. In the case of the presence of an external electric field, the metastable Nd_2Fe_(23)B_3 phase, as a main phase, is still stayed in the sample. This fact suggests that the external electric field enhances the stabilization of the metastable Nd_2Fe_(23)B_3 phase. The effect of the external electric field on the phase selection and stabilization was explained in terms of the specific conductance difference between the crystallization products.


electric field; phase selection; magnetic material;rare earths


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Total: 18 articles

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