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一、概述 相变型(Phase Change)光盘是目前两大类可擦重写光盘中的一类,另一类是磁光型MO盘。MO盘采用的是第一个在商业上可行的可擦重写光盘技术,但又存在一些限制,即它的写过程不能一次完成,而相变技术首先提供可直接写入新数据的读写光存储技术。1968年美国ECD公司的奥弗辛斯基首先在硫系开关材料中发现具有记忆功能的相变现象。相变存储器使用的是一种
I. Overview Phase change (Phase Change) CD-ROM is currently one of two categories of rewritable CD-ROM, the other is a magneto-optical disk MO. MO disk uses the first commercially available erasable optical disc technology, but there are some limitations, that is, its writing process can not be completed at a time, and the phase change technology to provide direct access to write new data read and write Optical storage technology. In 1968, Ophousinsky, an ECD company in the United States, first discovered the phase transition phenomenon with memory function in sulfur-based switch materials. Phase change memory is used