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Y(Mn_(1-x)Fe_x)_(12)的结构和磁性 总被引:1,自引:0,他引:1
稀土金属R和3d过渡族金属M形成一系列金属间化合物,如RM_5,RM_2,R_2M_(17)等已作为新型磁性材料应用,而RM_(12)型化合物,可能由于除Mn以外,像Fe,Co,Ni等都不能建立RM_(12)相,并且RM_(12)是反铁磁的,以前研究较少。我们用Fe代Mn,研究三元金属间化合物R(Mn,Fe)_(12)单相存在的条件以及通过原子代换的方法,改变合金的电子组态和磁性离子间的相互作用,从而影响和改变物体的磁性。 相似文献
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DyTiFe_(11) compound is a ferromagnetic substance.It has tetragonal body-centered ThMn_(12)-typecrystallographic structure.At room temperature,the easy magnetization direction is the c-axis.A spinreorientation begins to appear at about 175K.The contribution of Fe sublattice to magnetocrystallineanisotropy was determined by experiments and that of Dy sublattice was obtained by using single ion modelcalculation.Results show that the spin reorientation arises from the competition of anisotropy between Fe andDy sublattices. 相似文献
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We succeed in inserting a number of nitrogen atoms into the R_2Fe_(17)and RTiFe_(11)intermetalliccompounds.The nitrides retain original Th_2Zn_(17)(or Th_2Ni_(17_)and ThMn_(12)structures,but with an increase inthe unit cell volume.The interstitial nitrogen atoms are found to have an effect of increasing the Curie tempera-ture and saturation magnetization.Moreover,a distinct effect on the magnetocrystalline anisotropy is also ob-served in these nitride compounds.Especially,NdTiFe_(11)N_(0.5)and SmTiFe_(11)N_2 have excellent intrinsic magneticproperties favourable for permanent magnet applications. 相似文献
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STRUCTURAL AND MAGNETIC PROPERTIES OF Y (Mn_(1—x)Fe_x)_(12) 总被引:1,自引:0,他引:1
<正> 稀土金属R和3d过渡族金属M形成一系列金属间化合物,如RM_5,RM_2,R_2M_(17)等已作为新型磁性材料应用,而RM_(12)型化合物,可能由于除Mn以外,像Fe,Co,Ni等都不能建立RM_(12)相,并且RM_(12)是反铁磁的,以前研究较少。我们用Fe代Mn,研究三元金属间化合物R(Mn,Fe)_(12)单相存在的条件以及通过原子代换的方法,改变合金的电子组态和磁性离子间的相互作用,从而影响和改变物体的磁性。 相似文献
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