An optical information recording medium is composed of at least a
phase-change type recording layer 4 provided on a substrate 1. The
optical information recording medium is conducted to record and erase
information by changing a phase of the phase-change type recording layer
by irradiating light. The phase-change type recording layer is further
composed of Ti.sub.wGe.sub.xSb.sub.yTe.sub.z, wherein each of w, x, y and
z is in atomic percent and satisfies following relations:
0.5.ltoreq.w.ltoreq.4.0, 3.4.ltoreq.x.ltoreq.14.5,
2.1.ltoreq.y/z.ltoreq.4.0 and w+x+y+z=100.