THE TEMPERATURE DEPENDENCE OF MAGNETIC AND MAGNETO-OPTICAL PROPERTIES FOR (Pr,Nd,Sm)-(Tb,Dy)FeCo/(Tb,Dy)FeCo COUPLE-BILAYERED FILMS

Abstract

Abstract-In this paper, the temperature dependence of magnetic and magneto-optic (MO) properties of light rare earth (LRE)-heavy rare earth (HRE)-FeCo / HRE-FeCo has been investigated. The shapes of Kerr hysteresis loops were lead to great changes as temperature varied. The Kerr angles of couple-bilayeredfilms were shown different decreasing tendency as compared to those of single-layered films when temperature was increased. It was found that the exchange-coupled action has a profundly contribution to Kerr angles through the temperature range(-30 0 -1 lOt).