Electron-beam driven relaxation oscillations in ferroelectric nanodisks

被引：7

作者：

Ng, Nathaniel ^{[1
]}

Ahluwalia, Rajeev ^{[1
]}

Kumar, Ashok ^{[2
]}

Srolovitz, David J. ^{[3
,4
]}

Chandra, Premala ^{[5
]}

Scott, James F. ^{[6
,7
]}

机构：

[1] Inst High Performance Comp, Singapore 138632, Singapore

[2] CSIR, Natl Phys Lab, Delhi 110012, India

[3] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[4] Univ Penn, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA

[5] Rutgers State Univ, Dept Phys & Astron, Ctr Mat Theory, Piscataway, NJ 08854 USA

[6] Univ St Andrews, Dept Chem, St Andrews YX16 9ST, Fife, Scotland

[7] Univ St Andrews, Dept Phys, St Andrews YX16 9ST, Fife, Scotland

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 15期

基金：

美国国家科学基金会;

关键词：

CLOSURE; DOMAINS; FILMS;

D O I：

10.1063/1.4932653

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using a combination of computational simulations, atomic-scale resolution imaging and phenomenological modelling, we examine the underlying mechanism for nanodotnain restructuring in lead zirconate titanate nanodisks driven by electron beams. The observed subhertz nanodomain dynamics are identified with relaxation oscillations where the charging/discharging cycle time is determined by saturation of charge traps and nanodomain wall creep. These results are unusual in that they indicate very slow athermal dynamics in nanoscale systems, and possible applications of gated versions are discussed. (C) 2015 AIP Publishing LLC.

引用

页数：4

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