Nanodomain formation on ferroelectrics and development of hard-disk-drive-type ferroelectric data storage devices

Yoshiomi Hiranaga, Tomoya Uda, Yuichi Kurihashi, Hikari Tochishita, Michio Kadota, Yasuo Cho

研究成果: Article査読

9 被引用数 (Scopus)

抄録

In this study, several read/write (R/W) tests were conducted using a hard-disk-drive-type ferroelectric data storage test system based on scanning nonlinear dielectric microscopy (SNDM). A periodically inverted signal, which corresponded to artificial domain stripes formed on LiTaO3 single crystal, could be read correctly with a bit rate of 2 Mbps using this test system. Bit writing on a 50-nm-thick epitaxial LiTaO3 film at 20Mbps was also demonstrated. In addition, a noncontact probe-height control technique was adapted to solve the problem of tip abrasion. The gap distance between a probe and a medium surface was successfully controlled on the nanometer order using a noncontact SNDM technique with sharp-pointed tungsten needle probes prepared by electrolytic polishing. Bit writing under a noncontact state was also studied. Artificial domain dots with diameters of less than 100nm could be formed under the noncontact state.

本文言語English
ページ(範囲)09KA181-09KA185
ジャーナルJapanese journal of applied physics
48
9 Part 2
DOI
出版ステータスPublished - 2009 12 1

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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