Design, fabrication and dielectric properties in core-double shell BaTiO3-based ceramics for MLCC application

被引：42

作者：

Hao, Hua ^{[1
,2
]}

Liu, Mengying ^{[1
]}

Liu, Hanxing ^{[1
]}

Zhang, Shujun ^{[2
]}

Shu, Xin ^{[1
]}

Wang, Ting ^{[1
]}

Yao, Zhonghua ^{[1
]}

Cao, Minghe ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

RSC ADVANCES | 2015年 / 5卷 / 12期

关键词：

CHEMICAL COATING METHOD; MICROSTRUCTURE; PERFORMANCE; CAPACITORS; STABILITY;

D O I：

10.1039/c4ra13367f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

BaTiO3-based ceramics with a core-double shell structure were fabricated by precipitation and the sol-gel method. Bi(Zn1/2Ti1/2)O-3-BaTiO3 (BZT-BT) or Nb oxide was chosen to be the shell-I (inner layer) or shell-II (outer layer) composition. The structure and dielectric properties were investigated by X-ray diffraction (XRD), HRTEM (High Resolution Transmission Electron Microscopy) and electron probe micro analysis (EPMA), with different core to shell ratio (n(c)/n(s)). Compared with the designed composition BT-Nb-( 0.2BZT-0.8BT), BT-(0.2BZT-0.8BT)-Nb was found to possess improved dielectric temperature stability, where the capacitance variation Delta C/C <= +/- 15% was achieved over a temperature range of -60-155 degrees C, with the dielectric constant and dielectric loss being in the order of 1860 and 0.011 at room temperature.

引用

页码：8868 / 8876

页数：9

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