Electrocaloric effect in ferroelectric nanowires from atomistic simulations

被引：34

作者：

Herchig, R. ^{[1
]}

Chang, C. -M. ^{[2
]}

Mani, B. K. ^{[1
]}

Ponomareva, I. ^{[1
]}

机构：

[1] Univ S Florida, Dept Phys, Tampa, FL 33620 USA

[2] Michigan State Univ, Cyber Enabled Res, E Lansing, MI 48824 USA

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

美国国家科学基金会;

关键词：

PHASE-TRANSITIONS; THIN-FILM;

D O I：

10.1038/srep17294

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Electrocaloric effect is presently under active investigation owing to both the recent discoveries of giant electrocaloric effects and its potential for solid state cooling applications. We use first-principles-based direct simulations to predict the electrocaloric temperature change in ferroelectric ultrathin nanowires. Our findings suggest that in nanowires with axial polarization direction the maximum electrocaloric response is reduced when compared to bulk, while the room temperature electrocaloric properties can be enhanced by tuning the ferroelectric transition temperature. The potential of ferroelectric nanowires for electrocaloric cooling applications is discussed.

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页数：6

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