Deterministic Switching in Bismuth Ferrite Nanoislands

被引：19

作者：

Morelli, Alessio ^{[1
]}

Johann, Florian ^{[2
,3
]}

Burns, Stuart R. ^{[1
,4
]}

Douglas, Alan ^{[1
]}

Gregg, J. Marty ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Math & Phys, Ctr Nanostruct Media, Univ Rd, Belfast BT7 1NN, Antrim, North Ireland

[2] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany

[3] Asylum Res, Borsigstr 15a, D-65205 Wiesbaden, Germany

[4] Univ New South Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

来源：

NANO LETTERS | 2016年 / 16卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

Bismuth ferrite; multiferroics; nanoislands; polarization switching; scanning probe microscopy; NANOSCALE CONTROL; CRYSTAL; FILMS;

D O I：

10.1021/acs.nanolett.6b02311

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report deterministic selection of polarization variant in bismuth BiFeO3 nanoislands via a two-step scanning probe microscopy procedure. The polarization orientation in a nanoisland is toggled to the desired variant after a reset operation by scanning a conductive atomic force probe in contact over the surface while a bias is applied. The final polarization variant is determined by the direction of the inhomogeneous in-plane trailing field associated with the moving probe tip. This work provides the framework for better control of switching in rhombohedral ferroelectrics and for a deeper understanding of exchange coupling in multiferroic nanoscale heterostructures toward the realization of magnetoelectric devices.

引用

页码：5228 / 5234

页数：7

共 37 条

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[2]

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