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

【Author】

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)

【Abstract】

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.

【Keywords】

electric field; phase selection; magnetic material;rare earths

References

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Total: 18 articles

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