Fundamental study on ferroelectric data storage with the density above 1 Tbit/inch2 using congruent lithium tantalate

Yasuo Cho, Yoshiomi Hiranaga, Kenjiro Fujimoto, Yasuo Wagatsuma, Atsushi Onoe

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Ferroelectrics have created considerable interest as promising storage media. In this paper, an investigation for ultra high-density ferroelectric data storage based on scanning nonlinear dielectric microscopy (SNDM) was carried out. For the purpose of obtaining the fundamental knowledge of high-density ferroelectric data storage, several experiments of nano-domain formation in lithium tantalate (LiTaO3) single crystal were conducted. As a result, domain dot array with areal density of 1.5 Tbit/inch2 was written in congruent LiTaO3 (CLT). We also found that quite fast nano second domain switching was possible by reducing a sample thickness even in CLT with a lot of Li vacancy defects which played a role of pinning sites against domain wall movement.

Original languageEnglish
Pages (from-to)77-81
Number of pages5
JournalIntegrated Ferroelectrics
Volume61
DOIs
Publication statusPublished - 2004 Dec 1

Keywords

  • Data storage
  • Lithium tantalate
  • Nanodomain engineering
  • Scanning nonlinear dielectric microscopy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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