Long-term-retention characteristics of small inverted dots formed on congruent single-crystal LiTaO3

Nozomi Odagawa, Yasuo Cho

Research output: Contribution to journalArticle

4 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 -φdots 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 area density, the activation energy and frequency factor, parameters of the Arrhenius equation, were determined to be Ea = 0.76 eV and α =2.21 × 10 5, respectively. Using these parameters, lifetime length at 80°C was estimated to be more than 16 yr and is sufficiently long compared with that of general memory devices.

Original languageEnglish
Article number102906
JournalApplied Physics Letters
Volume89
Issue number10
DOIs
Publication statusPublished - 2006 Sep 15

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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