Influence of Rapid Recurrent Thermal Annealing on Magnetic Properties of CoFe-O Thin Film

The variation of magnetic properties with new Rapid Recurrent Thermal Annealing (RRTA) has been studied in high moment thin film (Co0.35Fe0.65)99O1. After the rapid recurrent thermal annealing the coercivity as-deposited this thin film decreases from 105 to 3 Oe at 450℃ for several periods of times, their resistivity decreases to 70%, and the size of a-Fe(Co)phase can be reduced to 15~35 nm by analysis. Results show that the method is more effective than other methods to improve the magnetic and electrical properties of (Co0.35Fe0.65)99O1 thin films.