铁的自发磁化强度的穆斯堡尔法研究  

Study on Spontaneous Magnetization of α-Fe by Mssbauer Spectroscopy

作　　者：张恒华[1] 蒋为吉[2] 魏绍琴[1] 张晓燕 

机构地区：[1]上海科技大学,上海201800 [2]上海交通大学

出　　处：《物理测试》1993年第3期113-119,共7页Physics Examination and Testing

摘　　要：本文详细地叙述了α-Fe中^(57)Fe核处的超精细磁场(H_n)的来源,并用穆斯堡尔法测量了不同温度下^(57)Fe核处的超精细磁场H_n(T),同时从理论上并借助于计算机求解出不同温度(T),不同角量子数(J)下α-Fe的饱和磁化强度M_1(T),最后用计算机最小二乘法拟合得到,H_n(T)与M_J(T)之间符合修正的马歇尔方程,即: H_n(T)=A_0(1-αT^2)·M_J(T) 其中J=1/2,A_o,α为常数,且A_0=0.193016,α=2.472×10^(-7)The origin of hyperfine field(H_n)within the ^(57)Fe nucleus in α-Fe has been fully discussed and the H_n (T)under different temperature(T)have been measured by Mossbauer spectroscopy as well. Meanwhile the saturation magnetization [M_I (T)]of different angular quantum numbers (J)and different tomperatttre(T) are calculated with a computer. It is found from the least-square fitting with a computer that the correlation between H_n (T) and M_J (J) obeys the corrected Marshall's equation, that is: H_n (T)=A_0(1-αT^2)M_J (T) Where J=1/2, A_0 and α are constants with A_0=0.193016 and α=2.472×10^(-7)

关 键 词：自发磁化强度 穆斯堡尔学 Α-FE 

分 类 号：TG115.33[金属学及工艺—物理冶金]