检索结果-南通市图书馆

Microstructure and dielectric properties of bati_4 o_9 (f)/0.64 bati_4 0_9+0.36 BaPr_2 Ti_4 o_(12) composites

Journal of Harbin Institute of Technology(New Series) 2003年第3期10卷 265-268页

作者：宋英王福平姜兆华 Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Electronics Science and Technology Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 Chinahe microstructure dielectric properties and chemical state of Ti element on BaTi_4O_9 (f)/(0.64 BaTi_4O_9-0.36BaPr_2Ti_4O_(12)) composites sample surface were characterized by X-ray diffraction (XRD) Transmission electron microscopy (TEM) LCR meter method and X-ray photoelectron spectroscopy (XPS). The results show that the system is composed of BaTi_4O_9 and BaPr_2Ti_4O_(12) two phases. Pr ions are distributed in the BaWi_4O_9 grains and the segregation of Pr ions was observed on the grain boundaries of BaTi_4O_9/BaTi_4O_9. The content of Ti~(3+) and Ti~(2+) decrease in the BPT system composites due to the addition of BaTi_4O_9 fibers which improved the dielectric properties of the system. BPT10 sample with 10% BaTi_4O_9 fibers has the best dielectric properties in the system its ε_r = 64 tan δ= 1×10~(-4)(at 1 MHz) and it may be a potential candidate for microwave dielectric ceramics.

The microstructure, dielectric properties and chemical state of Ti element on bati_4o_9 (f)/(0.64 bati_4o_9-0.36BaPr_2Ti_4o_(12)) composites sample surface were characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), LCR meter method and X-ray photoelectron spectroscopy (XPS). The results show that the system is composed of bati_4o_9 and BaPr_2Ti_4o_(12) two phases. Pr ions are distributed in the BaWi_4o_9 grains and the segregation of Pr ions was observed on the grain boundaries of bati_4o_9/bati_4o_9. The content of Ti^(3+) and Ti^(2+) decrease in the BPT system composites due to the addition of bati_4o_9 fibers, which improved the dielectric properties of the system. BPT10 sample with 10% bati_4o_9 fibers, has the best dielectric properties in the system, its ε_r = 64, tan δ= 1×10^(-4)(at 1 MHz) , and it may be a potential candidate for microwave dielectric ceramics.

关键词： microstructure dielectric properties bati_4o_9 fibers composites

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：