Issue 34, 2013
From the journal:

Journal of Materials Chemistry C

Towards the limit of ferroelectric nanostructures: switchable sub-10 nm nanoisland arrays†

Youngsuk Kim,‡a   Yunseok Kim,*bc   Hee Han,d   Stephen Jesse,b   Seung Hyun,a   Woo Lee,d   Sergei V. Kalininb  and  Jin Kon Kim*a  

* Corresponding authors

a National Creative Research Initiative Center for Block Copolymer Self-Assembly and Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Kyungbuk 790-784, Korea
E-mail: jkkim@postech.ac.kr

b The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

c School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Republic of Korea
E-mail: yunseokkim@skku.edu

d Korea Research Institute of Standards and Science (KRISS), Yuseong, Daejeon 305-340, Korea

Abstract

Ultrahigh density arrays of ferroelectric PbTiO3 (PTO) nanoislands with various feature sizes were epitaxially grown by utilizing block copolymer micelles. Piezoresponse and ferroelectric properties were clearly observed in the PTO nanoislands by band excitation piezoresponse force microscopy. In particular, PTO nanoislands were fully switchable even with a volume as small as 79 nm3. Accordingly, it is expected that the volume of the switchable ferroelectric nanoislands can be further decreased. The obtained results show that an areal density of over 10 Tb in−2 for the ferroelectric memory devices would be possible.

Graphical abstract: Towards the limit of ferroelectric nanostructures: switchable sub-10 nm nanoisland arrays

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Article information

DOI
https://doi.org/10.1039/C3TC30971A
Article type
Paper
Submitted
24 May 2013
Accepted
04 Jul 2013
First published
05 Jul 2013

J. Mater. Chem. C, 2013,1, 5299-5302

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Towards the limit of ferroelectric nanostructures: switchable sub-10 nm nanoisland arrays

Y. Kim, Y. Kim, H. Han, S. Jesse, S. Hyun, W. Lee, S. V. Kalinin and J. K. Kim, J. Mater. Chem. C, 2013, 1, 5299 DOI: 10.1039/C3TC30971A

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