Giant Negative Electrocaloric Effects of Hf0.5Zr0.5O2 Thin Films

被引：116

作者：

Park, Min Hyuk ^{[1
,2
]}

Kim, Han Joon ^{[1
,2
]}

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

Moon, Taehwan ^{[1
,2
]}

Do Kim, Keum ^{[1
,2
]}

Lee, Young Hwan ^{[1
,2
]}

Hyun, Seung Dam ^{[1
,2
]}

Hwang, Cheol Seong ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Coll Engn, Dept Mat Sci & Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, Coll Engn, Interuniv Semicond Res Ctr, Seoul 151744, South Korea

来源：

ADVANCED MATERIALS | 2016年 / 28卷 / 36期

基金：

新加坡国家研究基金会;

关键词：

PHASE; FIELD; FERROELECTRICITY; POLARIZATION;

D O I：

10.1002/adma.201602787

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hafnia (HfO2)-zirconia (ZrO2) solid solution films show giant positive (Delta T = 13.4 K) and negative (Delta T = -10.8 K) electrocaloric effects that can be simply controlled by tuning the Hf/Zr ratio. It is expected that the combination of the electrocaloric effects with opposite signs in this lead-free, simple, binary oxide can significantly improve the efficiency of electrocaloric cooling.

引用

页码：7956 / 7961

页数：6

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