Secondary Pyroelectric Effect and Figure of Merit of Ferroelectric 0-3 Composites

被引：5
|
作者：
Ando, Daisuke [1 ]
Eichhorn, Franziska [3 ]
Fey, Tobias [2 ,3 ]
Kakimoto, Ken-ichi [1 ,2 ]
机构：
[1] Nagoya Inst Technol, Dept Life Sci & Appl Chem, Showa Ku, Gokiso Cho, Nagoya, Aichi 4668555, Japan
[2] Nagoya Inst Technol, Frontier Res Inst Mat Sci, Showa Ku, Gokiso Cho, Nagoya, Aichi 4668555, Japan
[3] Friedrich Alexander Univ Erlangen Nurnberg FAU, Inst Glass & Ceram, Dept Mat Sci & Engn, Martensstr 5, D-91058 Erlangen, Germany
来源：
ADVANCED ENGINEERING MATERIALS | 2019年 / 21卷 / 06期
关键词：
composite; lead-free piezoelectric material; pyroelectric; secondary pyroelectric effect; thermal expansion;
D O I：
10.1002/adem.201900241
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By mixing lead-free piezoelectric Li-0.06(Na0.50K0.50)(0.94)NbO3 (LNKN) ceramic particles and polysiloxane, the authors synthesize a novel pyroelectric element that exhibits an enhanced secondary pyroelectric effect. The composite with an LNKN filler ratio of 30 vol% exhibits a homogeneous microstructure and a strong contact between the LNKN filler and the polysiloxane matrix. Thus, the secondary pyroelectric effect originating from such an interaction accounts for approximately half of the total pyroelectric coefficient (i.e 29 mu C/m(2)K) and enhanced the figure of merit of the composite (1.1 mu C/m(2)K).
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页数：5
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