Effect of Particle Size on the Dielectric Properties of Sodium Potassium Niobate -Portland Cement Composites

被引：6
|
作者：
Potong, R. [1 ]
Rianyoi, R. [1 ]
Jarupoom, P. [1 ]
Pengpat, K. [1 ]
Chaipanich, A. [1 ]
机构：
[1] Chiang Mai Univ, Fac Sci, Dept Phys & Mat Sci, Chiang Mai 50200, Thailand
来源：
FERROELECTRICS LETTERS SECTION | 2009年 / 36卷 / 3-4期
关键词：
NKN; Composites; Particle size; Dielectric Properties; PIEZOELECTRIC PROPERTIES; SENSORS;
D O I：
10.1080/07315170903152748
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this research, the effect of sodium potassium niobate, (Na0.5K0.5)NbO3 (NKN) particle size on the dielectric properties of 0-3 non lead based piezoelectric cement based composites were investigated. NKN of various particle sizes (75, 225 and 450 m) were used at 50% by volume to produce the composites. Dielectric properties at various frequencies (0.1-20 kHz) were investigated. The results showed that the dielectric values of NKN-PC composites increased with increasing NKN particle size where epsilon r at 1 kHz are 158.60 and 191.21 for composites with 75 m and 450 m NKN particle size respectively. The dielectric loss (tan) was found to reduce with increasing NKN particle size and the tan value was lowest at 0.39 for composite with 450 m NKN particle size.
引用
收藏
页码：76 / 81
页数：6
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