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论文类型：期刊论文

发表时间：2018-05-01

发表刊物：AIP ADVANCES

收录刊物：SCIE、EI、CPCI-S

卷号：8

期号：5

ISSN号：2158-3226

摘要：Addition of minor Mn effectively improves the amorphous-forming ability and thermal stability of the Fe85Si2B8P4Cu1 alloy. With increasing the Mn content from 0 to 3 at.%, the critical thickness for amorphous formation and onset temperature of the primary crystallization increase from 14 mu m and 659 K to 27 mu m and 668 K, respectively. The fine nanocrystalline structure with alpha-Fe grains in size (D) of < 20 nm was obtained for the annealed amorphous alloys, which showexcellent soft magnetic properties. The alloying of Mn reduces the coercivity (H-c) by decreasing the D value and widens the optimum annealing temperature range for obtaining low H-c, although the saturation magnetic flux density (B-s) is decreased slightly. The Fe83Mn2Si2B8P4Cu1 nanocrystalline alloy possesses fine structure with a D of similar to 17.5 nm, and exhibits a high B-s of similar to 1.75 T and a low H-c of similar to 5.9 A/m. The mechanism related to the alloying effects on the structure and magnetic properties was discussed in term of the crystallization activation energy. (C) 2017 Author(s).