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 language | English |
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Pages (from-to) | 77-81 |
Number of pages | 5 |
Journal | Integrated Ferroelectrics |
Volume | 61 |
DOIs | |
Publication status | Published - 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