Phase-change optical recording medium and recording and reproducing method thereof

A phase-change optical recording medium comprising:

• a substrate, and
• at least a recording layer consisting of a phase-change material disposed on the substrate,
• wherein the phase-change material is expressed by the following Equation 1
• SbαZβQδEquation 1
• where
• Z represents Sn and one of Sn doped with at least one additive element selected from Bi, Pb and O;
• Q represents C;
• α, β and δ each represents an atomic ratio;
• 0.50≦α≦0.79;
• 0.10≦β≦0.30;
• and
• 0.03≦δ≦0.25,
• wherein a maximum recording linear velocity VH of the phase-change optical recording medium is 20 m/s to 60 m/s,
• wherein a range of linear velocity of the phase-change optical recording medium recordable even when the recording linear velocity is continuously changed is 0.3VH to 1.0VH, and
• wherein jitter is less than 12% and reproduction error is 350 or less when 10 repeated recordings are performed.