Get the latest tech news
Inside a Ferroelectric RAM Chip
Ferroelectric memory (FRAM) is an interesting storage technique that stores bits in a special "ferroelectric" material. Ferroelectric memory...
The die photo above shows this 64-kilobit chip under a microscope; the four large dark stripes are the memory cells, containing tiny cubes of ferroelectric material. In a normal capacitor, applying an electric field causes the positive and negative charges to separate in the dielectric material, making it polarized. Because the atoms physically change position, the polarization is stable for decades; in contrast, the capacitors in a DRAM chip lose their data in milliseconds unless refreshed.
Or read this on Hacker News