Strontium doped CaCu3Ti4O12 ceramics with very low dielectric loss synthesized by the sol-gel method

被引：10
|
作者：
Zhao, Jiangpeng [1 ]
Sun, Li [1 ]
Cao, Ensi [1 ]
Hao, Wentao [1 ]
Zhang, Yongjia [1 ]
Ju, Lin [2 ]
机构：
[1] Taiyuan Univ Technol, Coll Phys & Optoelect, Taiyuan 030024, Peoples R China
[2] Anyang Normal Univ, Coll Phys & Elect Engn, Anyang 455000, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2022年 / 128卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Dielectric loss; Sol-gel method; Nonlinear properties; Microstructure; NONOHMIC PROPERTIES; TEMPERATURE; MICROSTRUCTURES; PERMITTIVITY; ENHANCEMENT; IMPEDANCE; CONSTANT;
D O I：
10.1007/s00339-022-05452-w
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Ca site of CaCu3Ti4O12 (CCTO) ceramics doped by strontium (Ca1-xSrxCu3Ti4O12, x = 0.0, 0.1, 0.2, 0.3) were accomplished by a modified sol-gel method and subsequently sintered at 980-1020 degrees C to improve the dielectric properties and enhance the breakdown electric field. Remarkably, the dielectric loss (tan delta) of the CSCTO ceramics sintered at 1000 degrees C can be lower than 0.05 in a wide frequency (20 Hz-100 kHz), especially, very low dielectric loss (tan delta) about 0.008 can be obtained in Ca0.9Sr0.1Cu3Ti4O12 ceramic which sintered at 1000 degrees C measured at 300 Hz. These results indicate that Sr2+ doped at the Ca2+ site of CCTO type ceramic can enhance the applicable properties of CaCu3Ti4O12 and can be used in the future practical researches.
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页数：11
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