SThM -Based Probe Recording on Phase-Change Media

Major Application of PC Media:
CDRW or DVDRW disks

Read/Write on a PC medium.
• Initial state: crystalline;
• Writing process: crystalline to amorphous state;
• Erasing process: amorphous to crystalline state.
• Figure 20.09 demonstrates the write and erase processes in CD based media.

Figure 20.09: Schematic of writing and erasing processes in CD media.