Magnetic Properties and Exchange Bias Effect of Cu and Cr doped Sm2Co17 Alloy Film

Cu and Cr-doped Sm2Co17 films were synthesized using pulsed laser deposition method with the substrate of Si(100), and our results show that Cu and Cr incorporation can reduce the grain size and increase the coercivity of Cu and Cr-doped Sm2Co17 films. Furthermore, incorporations of Cu and Cr will introduce a positive effect for the exchange bias of Cu and Cr-doped Sm2Co17 films. The magnetic measurement of external magnetic field and zero-field-cooled (FC-ZFC) under the temperature ranging from 10K to 300 K prove that the critical value of FM-AFM transform is similar to 80 K in the Cu and Cr-doped Sm2Co17 films, which showed that the exchange bias origins from the coupling competition between ferromagnetic phase and antiferromagnetic phase.