| pecimens of ;Expressions for the fluctuation field, ;The results obtained from these investigations converge toward a single conclusion. The pinning regime in the as-quenched FeAu specimen (zero age) and the low-age FeCu specimens is weak. For the prolonged age specimens of FeAu and FeCu, strong pinning is active. This claim was verified by the electron microscopic studies of the magnetic features and microstructure in these specimens by using Lorentz microscopic techniques.;Based on the strong and weak pinning models, the relationships between the a.c. susceptibility... |
