Effect of Annealing Time on the Dielectric Properties of BaMn<sub>3</sub>Ti<sub>4</sub>O<sub>14.25</sub>Pellets by Spark Plasma Sintering

作     者：Xiong Xie Jun Shen Xinxin Liu Liang Wang 

作者机构：State Key Laboratory of Mechanical Transmission College of Materials science and engineering Chongqing University Chongqing China Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing China 

出 版 物：《Journal of Applied Mathematics and Physics》 (应用数学与应用物理（英文）)

年 卷 期：2019年第7卷第8期

页      面：1637-1644页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：BaMn3Ti4O14.25 Dielectric Properties Reoxidation Layer Electrically Insulating Phase Breakdown Voltage 

摘      要：In this paper, the effects of annealing time on the dielectric properties of the Spark Plasma Sintered (SPS) BaMn3Ti4O14.25 pellets were detail studied by the crystal structure analysis, micro structural observation and electrical properties research. The results showed that long annealing time was beneficial to the recovery of crystal structure damage caused by SPS, the formation of a reoxidation layer at the surface of grains and decreasing of the electrically insulating phase. All of these resulted in an increase in dielectric constant and loss, and a reduction in breakdown voltage.