Synthesis And Characterization Of Lead Free K0.33Na0.67(NbO3) MPB System

被引：0
作者：
Pattanaik, M. [1 ]
Kumar, P. [1 ]
机构：
[1] Natl Inst Technol, Dept Phys, Rourkela 769008, India
来源：
INTERNATIONAL CONFERENCE ON PHYSICS OF EMERGING FUNCTIONAL MATERIALS (PEFM-2010) | 2010年 / 1313卷
关键词：
Perovskite; Dielectric properties; Ferroelectric properties; KNN; MPB; DIELECTRIC-PROPERTIES; CERAMICS;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Lead-free K0.33Na0.67(NbO3), a morphotropic phase boundary (MPB) composition of Potasium Sodium Niobate (KNN) system has been synthesized in single perovskite phase by partial co-precipitation method. X-ray studies revealed monoclinic structure at room temperature. SEM characterization of the sintered ceramics revealed dense and homogeneous packing of grains. Room temperature (RI) dielectric constant (epsilon(r)) and dielectric loss (tan delta) at 1 KHz were found to be similar to 388 and 0.03 respectively, whereas a relatively high density rho similar to 4.45g/cm(3), remnant polarization (P-r) similar to 4.95 mu c/cm(2), coercive field (E-c) similar to 5.60kV/cm, Curie temperature (T-c) similar to 370 degrees C have been observed.
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页码：284 / 287
页数：4
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