Optical information recording medium, producing method thereof

一种相变记录媒体，为设有以Ge-N、Ge-N-O为代表的阻挡层的记录媒体，以防止记录层和电介质保护层之间发生层间化学反应和原子扩展。阻挡材料也可以用于保护层其本身。由此可以明显抑制现有相变型光学信息记录媒体中观察到的重复记录擦除所造成的反射率下降和信号振幅的下降，可使重写次数增加。 In a phase-change recording medium, a recording medium is provided with a barrier layer including Ge-N, Ge-N-O between a recording layer and a dielectric protective layer in order to prevent a chemical reaction and an atom diffusion between the recording layer and the dielectric protective layer. A barrier material can be also applied to the protective layer itself. Thereby, it is possible to considerably suppress a reduction of a reflectivity and a reduction of a signal amplitude due to the repeat of recording and erasing, such reductions being observed in a conventional phase-change optical information recording medium, and thereby the number of overwriting times can be increased .