Effect of Mn substitution for Fe in cubic Laves Zr_(0.1)Tb_(0.9)(Fe_(1-x)Mn_x)_2 and Y_(0.1)Tb_(0.9)(Fe_(1-x)Mn_x)_2 com- pounds is presented.Similar results in both systems are obtained: The structure and the magneti...Effect of Mn substitution for Fe in cubic Laves Zr_(0.1)Tb_(0.9)(Fe_(1-x)Mn_x)_2 and Y_(0.1)Tb_(0.9)(Fe_(1-x)Mn_x)_2 com- pounds is presented.Similar results in both systems are obtained: The structure and the magnetism of TbFe_2 are both influenced slightly by a small amount of Y or Zr substitution for Tb;With increasing x value,the lattice constant increases monotonously;the Curie temperature decreases linearly;while saturation magnetization increases linearly.For the small amount of Mn substitution for Fe in both systems,magnetostriction is significantly larger than that in the pure iron alloys.The largest magnetostriction of|γ_‖-|γ_|=2200×10^(-6) at magnetic field of 2×10~7/4π A/mis obtained for Y_(0.1)Tb_(0.9)(Fe_(0.95)Mn_(0.05)_2.展开更多
The magnetization curves at 1.5K and thermomagnetization curves in the fields of about 450e for amorphous Fe_(90-x)Si_(x)Zr_(10)(x=0,4,7 and 10)alloys prepared by the drum spinning technique are measured with an eztra...The magnetization curves at 1.5K and thermomagnetization curves in the fields of about 450e for amorphous Fe_(90-x)Si_(x)Zr_(10)(x=0,4,7 and 10)alloys prepared by the drum spinning technique are measured with an eztracting sample magnetometer.At low Si concentration the amorphous Fe_(90-x)Si_(x)Zr_(10) alloys exhibit a large value of the high-field susceptibility,but the average magnetic moment per Fe atomμFe,and the Curie temperature,Tc,are quite small,compared with amorphous Fe_(87-x)Si_(x)B_(13) alloys.This unusual behavior could be explained in terms of the presence of the antiferromagnetic state.展开更多
In the reduced curves of electronic resistivity and thermomagnetic measurement of the amorphous alloys,(Fe_(1-x)Ni_(x))_(84)B_(16) with 0.02<x<0.08,preheated to a temperature higher than that of crystallization,...In the reduced curves of electronic resistivity and thermomagnetic measurement of the amorphous alloys,(Fe_(1-x)Ni_(x))_(84)B_(16) with 0.02<x<0.08,preheated to a temperature higher than that of crystallization,an anomalous abruption at about 150℃ was observed.The results of differential thermal analysis(DTA)and of X-ray diffraction show that after crystallization of the amorphous alloys(Fe_(1-x)Ni_(x))_(84)B_(16) the anomalous abruption can be attributed to the martensitic transformation of γ Fe(Ni)to α Fe(Ni).展开更多
文摘Effect of Mn substitution for Fe in cubic Laves Zr_(0.1)Tb_(0.9)(Fe_(1-x)Mn_x)_2 and Y_(0.1)Tb_(0.9)(Fe_(1-x)Mn_x)_2 com- pounds is presented.Similar results in both systems are obtained: The structure and the magnetism of TbFe_2 are both influenced slightly by a small amount of Y or Zr substitution for Tb;With increasing x value,the lattice constant increases monotonously;the Curie temperature decreases linearly;while saturation magnetization increases linearly.For the small amount of Mn substitution for Fe in both systems,magnetostriction is significantly larger than that in the pure iron alloys.The largest magnetostriction of|γ_‖-|γ_|=2200×10^(-6) at magnetic field of 2×10~7/4π A/mis obtained for Y_(0.1)Tb_(0.9)(Fe_(0.95)Mn_(0.05)_2.
文摘The magnetization curves at 1.5K and thermomagnetization curves in the fields of about 450e for amorphous Fe_(90-x)Si_(x)Zr_(10)(x=0,4,7 and 10)alloys prepared by the drum spinning technique are measured with an eztracting sample magnetometer.At low Si concentration the amorphous Fe_(90-x)Si_(x)Zr_(10) alloys exhibit a large value of the high-field susceptibility,but the average magnetic moment per Fe atomμFe,and the Curie temperature,Tc,are quite small,compared with amorphous Fe_(87-x)Si_(x)B_(13) alloys.This unusual behavior could be explained in terms of the presence of the antiferromagnetic state.
文摘In the reduced curves of electronic resistivity and thermomagnetic measurement of the amorphous alloys,(Fe_(1-x)Ni_(x))_(84)B_(16) with 0.02<x<0.08,preheated to a temperature higher than that of crystallization,an anomalous abruption at about 150℃ was observed.The results of differential thermal analysis(DTA)and of X-ray diffraction show that after crystallization of the amorphous alloys(Fe_(1-x)Ni_(x))_(84)B_(16) the anomalous abruption can be attributed to the martensitic transformation of γ Fe(Ni)to α Fe(Ni).
