Phase change recording material for an information recording medium and an information recording med

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A phase-change recording material used for an information recording medium utilizing a crystalline state as a non-recorded state and an amorphous state as a recorded state, which has the composition of the following formula (1) as the main component : (Sb1-xSnx) 1-y-w-zGeyTewM1z wherein each of x, y, z and w represents atomicity, x, z and w are numbers which satisfy 0.01