常州大学学报（自然科学版）2017，Vol.29Issue(1)：7-11,40,6.DOI:10.3969/j.issn.2095-0411.2017.01.002
Sr4 RTiNb9 O30（R=La,Pr,Nd）陶瓷的介电特性
Dielectric Properties of Sr4 RTiNb9 O30 (R= La,Pr,Nd)Ceramics
摘要
Abstract
Sr4 RTiNb9 O30 (R= La,Pr,Nd)ceramics were prepared by the traditional solid state method. The X-ray diffraction result showed that the ceramics are pure phase withpnma orthorhombic structure. The ceramics have homogeneous and compact fine grains by scanning electron microscope.The room and high temperature dielectrics properties testing by precision impedance analyzer showed that the room die-lectric constant and loss of the three ceramics decrease with increasing frequencies,while the dielectric constant and loss keep stableand permittivity change about ± 10% at 1MHz from room temperature to 300℃.The ferroelectric testing system indicated that Sr4 PrTiNb9 O30 has weak ferroelectricity.关键词
钨青铜结构/介电常数/介电损耗/温度稳定型/陶瓷电容器/铁电性Key words
tungsten bronze structure/dielectric constant/dielectric loss/temperature stable/ceramic ca-pacitance/ferroelectric分类
通用工业技术引用本文复制引用
胡长征,朱其华,孙振..Sr4 RTiNb9 O30（R=La,Pr,Nd）陶瓷的介电特性[J].常州大学学报（自然科学版）,2017,29(1):7-11,40,6.基金项目
国家自然科学基金资助项目(11564009) （11564009）
广西自然科学基金资助项目(2013GXNSFBA019230,2014GXNSFAA118350)。 （2013GXNSFBA019230,2014GXNSFAA118350）
