Ferroelectric Nonvolatile Memory Technology and Its Applications

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Abstract
Nonvolatile memory utilizing ferroelectric material is expected to be the ultimate memory due to its theoretical low power operation and fast access. We integrated a ferroelectric thin film using a standard complementary metal-oxide-semiconductor (CMOS) process and evaluated its basic characteristics and reliability including endurance and imprint effect. The film was prepared using a spin-on sol-gel method. A ferroelectric thin film formed using liquid source misted chemical deposition (LSMCD) was found to have almost the same characteristics as those of the film formed by the sol-gel method. No effects of the ferroelectric process on the CMOS transistors were observed. Design of ferroelectric memory cells and applications of the ferroelectric nonvolatile memory have been reviewed.

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