Electrocaloric characteristics in reactive sintered 0.87 Pb(Mg1/3Nb2/3)O3-0.13 PbTiO3

被引：132

作者：

Hagberg, Juha ^{[1
]}

Uusimaki, Antti ^{[1
]}

Jantunen, Heli ^{[1
]}

机构：

[1] Univ Oulu, Microelect Lab, EMPART Res Grp Infotech Oulu, Oulu 90650, Finland

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 13期

关键词：

D O I：

10.1063/1.2905296

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Only little data have been published on direct electrocaloric measurement of Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMN-PT) ceramics. In this paper, the electrocaloric characteristics of 0.87PMN-0.13PT ceramic were determined by direct measurements. A strong transition in the electrocaloric effect was found at about 18 degrees C, which is the same as the depolarization temperature T-d. The maximum electrocaloric temperature rise was Delta T=0.558 degrees C at T-ECm=70 degrees C and E=2400 kV/m, well above the transition at T-d=18 degrees C. The existence of two maximums could be an indication of several mechanisms being responsible for the electrocaloric effect.

引用

页数：3

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