The Effects Influenced on the Magnetic Properties by Depositing Fe-C in the Bottom Extremity of the Co-Fe Electrodeposited Anodic Oxidized Films

Co-Fe 석출 양극산화피막의 초기석출부에 석출한 Fe-C가 자기특성에 미치는 영향

At 34 at% Co-Fe, the aluminum anodic oxidized (alumite) films of particle diameter $150{\AA}$ have large perpendicular anisotropy energy and high coercive force. However, for the samples of particle diameter larger than $450{\AA}$, the bottom of each particle forms abnormal part called branch-shaped different from that of particle diameter $150{\AA}$. In this case the magnetic anisotropy energy Ku was about zero at the compositions of 45 and 75 at% Co. Furthermore, at tile compositions from 50 to 70 at% Co, the values of Ku became negative value. We confirmed that Fe-C deposited the bottom of particle orients very strongly and it has a large influence upon the magnetic anisotropy energy.