<正> 本工作研究不同退火温度的Fe_(62) Ni_(16)Si_8 B_(14), Fe_(40)Ni_(40) P_(12)B_8, Fe_(7.8)Co_(46.8)Ni_(23.4)Si_8B_(14)非晶磁性合金的Hall效应和电阻率ρ,发现这三种合金由非晶态向晶态转变时,反常Hall系数R_1和电阻率ρ发生变化,但R_1的相对变化较之ρ的相对变化大。 实验证明,磁性材料的Hall电阻率ρ_H为: ρ_H=V_Hd/I=R_0B_e+4πR_sM式中R_0和R_s为正常和自发Hall系数,V_H为Hall电压,d和M为试样的厚度和磁化强度,B_e为外磁场,I为通过试样的电流。第一项是传导电子在磁场作用下由Lorentz力引起的正常Hall效应,第二项是传导电子在自旋-轨道耦合作用下由偏散射和旁跳
The anomalous Hall coefficient and Ohm resistivity measurements other than current techniques were carried out on the study of the crystallization process of three amorphous magnetic aUoys such as Fe_(62)Ni_(16)Si_8B_(14), Fe_(40)Ni_(40)P_(12)B_8 and Fe_(7.8) Co_(46.8)Ni_(23.4)Si_8B_(14). A sudden change of the relative coefficient was occurred with very distinguished extent about 2 times from the relative resistivity. It would like suggested that the anomalous Hall coefficient is an effective parameter for studying the crystallization process of amorphous magnetic alloy.
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