[15p-A404-1~19] 6.1 Ferroelectric thin films

[15p-A404-15] Proposal of Ultra-Fast Reading Method for SNDM Ferroelectric Probe Memory

〇Yasuo Cho¹, Yoshiomi Hiranaga² (1.Tohoku Univ. NICHe, 2.Tohoku Univ. RIEC)

Keywords:Ferroelectrics, High density data storage, Scanning nonliear dielectric microscopy

We have proposed ferroelectric data storage using scanning nonlinear dielectric constant microscopy (SNDM). We have confirmed extremely high recording density and high-speed writing characteristics using LiTaO₃ crystal media. However, since the principle of reading is based on the detection of very small nonlinear dielectric constants, the playback speed is slow, which is a major problem. To solve this problem, we propose a new technology called Heat Assisted Ferroelectric Reading (HAFeR), which can both increase the reading speed and maintain the retention characteristics.