THE NUCLEATION PROCESS AND MAGNETIC INTERACTION IN NANOCRYSTALLINE ALLOY ND4FE77CO3B16
作者： Gao Youhui , Zhu Jinghan , Weng Yuqing , Eon Byung Park , Choong Jin Yang
DOI: 10.1063/1.368660
关键词: Nucleation 、 Remanence 、 Microstructure 、 Nanocrystalline material 、 Ferromagnetism 、 Grain size 、 Coercivity 、 Condensed matter physics 、 Metallurgy 、 Phase (matter) 、 Materials science
摘要: The temperature dependence of coercivity nanocrystalline Nd4Fe77Co3B16 is analyzed in this article. best linear fit HC(T)/Ms(T) vs 2K1(T)/μ0Ms2(T) indicates that HC controlled by a nucleation process the two-phase magnet. effects additives (Hf, Ga) and magnetic field heat treatment on microstructure interaction are also studied. It found condition grain shapes improved after adding Hf Ga, but surfaces deteriorated some precipitates present boundary. Taking into account values α, Neff, results transmission electron microscopy (TEM) Mossbauer spectroscopy, not only induces refinement causes uniform distribution soft hard phases, therefore it recommendable method for improving microstructure. From analysis high resolution TEM, amorphous phase with scale <10 A exists between different phase’s ...
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