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

被引：15

作者：

Kim, Youngsuk ^{[1
,2
]}

Kim, Yunseok ^{[3
,4
]}

Han, Hee ^{[5
]}

Jesse, Stephen ^{[3
]}

Hyun, Seung ^{[1
,2
]}

Lee, Woo ^{[5
]}

Kalinin, Sergei V. ^{[3
]}

Kim, Jin Kon ^{[1
,2
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Natl Creat Res Initiat Ctr Block Copolymer Self A, Pohang 790784, Kyungbuk, South Korea

[2] Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 790784, Kyungbuk, South Korea

[3] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[4] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, Gyeonggi Do, South Korea

[5] KRISS, Taejon 305340, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2013年 / 1卷 / 34期

基金：

新加坡国家研究基金会;

关键词：

BLOCK-COPOLYMER MICELLES; ULTRAHIGH-DENSITY ARRAY; DOMAIN-STRUCTURE; THIN-FILMS; POLARIZATION; SIZE; NANOPARTICLES; FABRICATION; SUBSTRATE;

D O I：

10.1039/c3tc30971a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 nm(3). 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.

引用

页码：5299 / 5302

页数：4

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