The underlying structural origin of magnetic properties is still elusive in Fe-based amorphous alloys.In this study,distinctive soft magnetic properties were developed in Fe76Si9B1oPs amorphous ribbons through systematic design of annealing process.Combining with synchrotron radiation,high-resolution transmission electron microscopy and first principle ab initio molecular dynamic simulation,it is found that the atomic structural evolution both in short range order and medium range order is responsi-ble for the magnetic softness at proper annealing temperature.In short range,formation of separated and densely coordinated Fe-metalloid clusters is instigated to adapt energy minimization,resulting in strengthening of ferromagnetic exchange interaction locally.In medium range,a homogeneous exchange-coupling from the uniformly strong and weak ferromagnetic regions is generated,which significantly weakens magnetic heterogeneity and leads to the excellent magnetic softness.Our findings may provide an effective/promising pathway to modulate the magnetic properties for Fe-based amorphous alloys,and give a comprehensive and quantitative understanding of the structure-properties relationship in amor-phous materials.

Xing Tong;Yan Zhang;Yaocen Wang;Xiaoyu Liang;Kai Zhang;Fan Zhang;Yuanfei Cai;Haibo Ke;Gang Wang;Jun Shen;Akihiro Makino;Weihua Wang

Songshan Lake Materials Laboratory,Dongguan 523808,China;New Industry Creation Hatchery Center (NICHe),Tohoku University,Sendai 980-8577,Japan;Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Science,Ningbo 315201,China;Institute for Materials Research,Tohoku University,Sendai 980-8577,Japan;School of Physical Science and Technology,Northwestern Polytechnical University,Xi'an 710072,China;Institute of Multidisciplinary Research for Advanced Materials,Tohoku University,Sendai 980-8577,Japan;Center for High Pressure Science and Technology Advanced Research (HPSTAR),Shanghai 201203,China;Advanced Institute for Materials Research,Tohoku University,Sendai 980-8577,Japan;College of Materials Science and Engineering,Tongji University,Shanghai 201804,China;Laboratory for Microstructures,Institute of Materials,Shanghai University,Shanghai 200444,China;College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen 518060,China;Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

材料科学技术（英文版）

[1]Xing Tong;Yan Zhang;Yaocen Wang;Xiaoyu Liang;Kai Zhang;Fan Zhang;Yuanfei Cai;Haibo Ke;Gang Wang;Jun Shen;Akihiro Makino;Weihua Wang-.Structural origin of magnetic softening in a Fe-based amorphous alloy upon annealing)[J].材料科学技术（英文版）,2022(01):233-240

Fe76Si9B1oPs,responsi

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