Development of ferroelectric data storage test system for high-density and high-speed read/write

Yoshiomi Hiranaga, Kenkou Tanaka, Tomoya Uda, Yuichi Kurihashi, Yasuhiro Kimoto, Hikari Tochishita, Michio Kadota, Yasuo Cho

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


In this study, we have developed ferroelectric data storage test systems based on scanning nonlinear dielectric microscopy (SNDM) to conduct various experiments concerning read/write capability. Nanodomain formation on ferroelectric recording media was studied using the data storage test system. A nanodomain dot array was successfully written on a single-crystal LiTaO 3 recording medium. The diameter of the written dot was as small as 7 nm. Epitaxial-thin-film LiTaO3 recording media were also developed. Nanodomain dots with the diameter of 25 nm were written on the thin-film recording medium. In addition, a non-contact probe-height control technique was adopted to solve the problem of tip abrasion using higher-order nonlinear dielectric response detection method. Finally, a hard-disk-drive (HDD)-type ferroelectric data storage test system was developed for conducting read/write tests under conditions close to those of actual operation. Capabilities of reading at the bit rate of 2 Mbps and writing at the bit rate of 20 Mbps were confirmed using the HDD-type data storage test system.

Original languageEnglish
Title of host publicationMultiferroic and Ferroelectric Materials
Number of pages6
Publication statusPublished - 2010
Event2009 MRS Fall Meeting - Boston, MA, United States
Duration: 2009 Nov 302009 Dec 4

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Conference2009 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA


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