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Relationship among intrinsic magnetic parameters and structure and crucial effect of metastable Fe3B phase in Fe-metalloid amorphous alloys

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Journal of Materials Science & Technology 2024年第13期180卷 141-149页

作者： Yuanfei Cai Bo Lin Yaocen Wang Rie Umetsu Dandan Liang Shoujiang Qu Yan Zhang Junqiang Wang Jun Shen School of Materials Science and Engineering Tongji UniversityShanghai 201804China CAS Key Laboratory of Magnetic Materials and Devices and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Shanghai Key Lab.of D&A for Metal-Functional Materials School of Materials Science&EngineeringTongji UniversityShanghai 201804China School of Physical Science and Technology Northwestern Polytechnical UniversityXi'an 710072China Institute for Material Research Tohoku UniversitySendai 980-8577Japan Shanghai Engineering Research Center of Physical Vapor Deposition(PVD)Superhard Coating and Equipment Shanghai Institute of TechnologyShanghai 201418China School of Materials Science and Engineering Fujian University of TechnologyFuzhou 350118China

The intrinsic heterogeneity of an amorphous structure originates from composition,and the structure de-termines the magnetic properties and crystallization models of amorphous *** on classical Fe-B binary magnetic amorphous alloys,the relationship between the structure and magnetic properties was extensively *** stacking structure of Fe-B binary amorphous alloys exhibit discontinuous changes within the range of 74-87 at.%*** structural feature can be expressed as ***_(3)B ma-trix+Fe atoms are transforming into *** matrix+B atoms with the increase of Fe *** so-lute atoms are uniformly distributed in the amorphous matrix holes,similar to a single-phase solid solu-tion *** transition point corresponds to the eutectic crystallization model composition(Fe_(82)B_(18) to Fe_(83)B_(17)).A high Fe content will amplify magnetic moment sensitivity to *** a given service temperature,the disturbance effect of magnetic moment self-spinning will offset the beneficial effect of increasing Fe content and induce the saturation magnetization(Ms)value to *** amorphous Fe-B alloys obtain the maximum Curie temperature near 75 at.%Fe,which is slightly smaller than that of the corresponding metastable Fe_(3)B phase,i.e.,the amorphous short-range order structure maintains the highest similarity to the Fe_(3)B *** chemical short-range ordering(SRO)structure of amorphous alloys exhibits heredity to corresponding(meta)stable crystal *** unique spatial orientation structure of the metastable Fe_(3)B phase is the structural origin of the amorphous *** study can guide the composition design of Fe-metalloid magnetic amorphous *** design of ma-terials with excellent magnetic properties originates from a deep understanding of precise composition control and temperature disturbance mechanism.

关键词： Fe-metalloid amorphous alloys Magnetization-temperature curve Atomic volume Bloch’s law crystallization model

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