文章信息/Info

Title:

Research on the Dielectric Properties of Ba1-xCaxZr0.1Ti0.9O3 Ceramics

作者:

鄭占申; 侯瀟宇; 李遠亮; 何盼盼

華北理工大學(xué)材料科學(xué)與工程學(xué)院 河北省無機非金屬重點實驗室

Author(s):

ZHNEG Zhanshen;  HOU Xiaoyu;  LI Yuanliang;  HE Panpan

Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials，College of Materials
Science and Engineering, North China University of Science and Technology

關(guān)鍵詞:

鋯鈦酸鋇; 摻雜; 微觀形貌; 介電性能; 居里溫度

DOI:

10.7502/j.issn.1674-3962.2016.02.09

文獻標(biāo)志碼:

A

摘要:

電容器是電子設(shè)備中大量使用的電子元件之一，在工農(nóng)業(yè)、國防、科學(xué)研究和日常生活中都有廣泛的應(yīng)用。其中陶瓷電容器具有耐高溫、耐腐蝕、介電常數(shù)高、性能穩(wěn)定等特點，滿足當(dāng)前集成電路對電容器小型化、高容量的要求。以BaCO3、CaCO3、ZrO2和TiO2等為原料，Y2O3為摻雜劑，以摻雜量為0.05%Y2O3（摩爾百分比）的Ba1-xCaxZr0.1Ti0.9O3陶瓷材料為研究對象，研究了CaCO3加入物對體系微觀形貌和介電性能的影響。結(jié)果表明，CaCO3的加入不改變試樣主晶相，但隨著CaCO3摻雜量的增加，晶粒尺寸逐漸增大，試樣的室溫介電常數(shù)εr有所提高，試樣的介電損耗tanδ驟然增大，然后降低。與此同時，材料的居里溫度向低溫方向移動，但移動范圍較小;樣品的介電常數(shù)峰值逐漸降低，樣品的介電常數(shù)溫度變化率減小。

Abstract:

Capacitor is one of the electronic components which used widely on research about industry, agriculture, national defense, scientific and human daily life. Ceramic capacitor has the characteristics of high temperature resistance, corrosion resistance, high dielectric constant and stable performance. It is able to meet the requirements of miniaturization and high capacity current.Ba1-xCaxZr0.1Ti0.9O3 doped 0.05%Y2O3 （mole percent） dielectric ceramics were prepared by raw materials such as BaCO3, CaCO3, ZrO2 and TiO2. The effect of micromorphology and dielectric properties by adding CaCO3 were studied.The results show that: CaCO3 doping have no effect on the main crystal phase of the sample, but the grain size increases with the addition of CaCO3. When εr of the sample increases at room temperature, tanδ abruptly increases firstly and then decreases. Meanwhile, the curie temperature of the samples moves to a lower temperature, but the phenomenon is not obvious. With decreasing value of εr peak, the temperature change rate is reduced.