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
Paramagnetic,ferromagnetic and antiferromagnetic properties are reported for as-quenched amorphous,annealed quasicrystal and crystal Al-Fe-Ce alloys.The first ferromagnetic quasicrystal was studied.Its Curie temperatu...Paramagnetic,ferromagnetic and antiferromagnetic properties are reported for as-quenched amorphous,annealed quasicrystal and crystal Al-Fe-Ce alloys.The first ferromagnetic quasicrystal was studied.Its Curie temperature is about 340K andμ(Fe)=2.3μB.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
1 Introduction Since the Nd<sub>2</sub>Fe<sub>14</sub>B materials with high energy product were found, a number of investigations on the magnetic properties and crystallization behavior of amor...1 Introduction Since the Nd<sub>2</sub>Fe<sub>14</sub>B materials with high energy product were found, a number of investigations on the magnetic properties and crystallization behavior of amorphous Nd-Fe-B alloys have been made. Buschow et al. studied the crystallization behavior of amorphous al-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.
基金The project supported by National Natural Science Fonndation of China and CAS Beijing EM Laboratary.
文摘Paramagnetic,ferromagnetic and antiferromagnetic properties are reported for as-quenched amorphous,annealed quasicrystal and crystal Al-Fe-Ce alloys.The first ferromagnetic quasicrystal was studied.Its Curie temperature is about 340K andμ(Fe)=2.3μB.
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).
文摘1 Introduction Since the Nd<sub>2</sub>Fe<sub>14</sub>B materials with high energy product were found, a number of investigations on the magnetic properties and crystallization behavior of amorphous Nd-Fe-B alloys have been made. Buschow et al. studied the crystallization behavior of amorphous al-
