Study of long-term-retention characteristics and wall behavior of nano-inverted domains on congruent single-crystal LiTaO3 based on wall energy

Nozomi Odagawa, Yasuo Cho

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

To investigate the long-term retention characteristics of a ferroelectric-data-storage system, 80-nm-thick congruent LiTaO3 plates with inverted-domain dot arrays composed of 100-nm-0 dots were baked at 220, 250, 280, and 300°C. After heat treatment over a range of different time intervals, the dots shrank. From the change in the dot radius data, the activation energy (Ea) and frequency factor (α), parameters of the Arrhenius equation, were determined to be Ea = 0.76eV, α = 2.21 × 105. From these parameter we can predict competitive retention characteristics compared with general memory devices. The phenomenon of dot shrinking can be explained from the energy transition of the system based on wall energy.

Original languageEnglish
Pages (from-to)7560-7563
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number9 B
DOIs
Publication statusPublished - 2006 Sep 22

Keywords

  • Ferroelectric data storage
  • LiTaO
  • Retention
  • Scanning nonlinear dielectric microscopy

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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