Abstract: An optico-thermal magnetic recording medium comprises a substrate, a first layer of a ternary amorphous alloy represented by Tb.sub.x (Fe.sub.1-y Co.sub.y).sub.1-x or Dy.sub.x (Fe.sub.1-y Co.sub.y).sub.1-x on axis of easy magnetization perpendicular to the film plane of the layer, a second layer of ternary amorphous magnetic alloy represented by Tb.sub.x (Fe.sub.1-y Co.sub.y).sub.1-x or Dy.sub.x (Fe.sub.1-y Co.sub.y).sub.1-x having and axis of easy magnetization perpendicular to the film plane of the layer, the first and the second layers being formed one on another, light being incident on the side of the first layer, the first and the second layers having magnetic layers exchange-coupled. In the first layer 0.15.ltoreq.x.ltoreq.0.2, and 0<y<0.5. In the second layer 0.2<x.ltoreq.0.35, and 0<y<0.5. At room temperature, the first layer has magnetic dominance of FeCo Sub-lattice, and the second layer has magnetic dominance of Tb or Dy sub-lattice.