BallMillingSynthesisandPropertyofNd0.7Sr0.3MnO3Manganites

被引：0

作者：

Shunsheng Chen Changping Yang Lingfang Xu and Shaolong Tang The Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus Faculty of Physics and Electronic Technology Hubei University Wuhan China Department of Physics Nanjing University Nanjing China ^{[1
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机构：

来源：

JournalofMaterialsScience&Technology | 2010年 / 26卷 / 08期

关键词：

High-energy ball milling; Perovskite structure; Colossal electroresistance (CER); Microstructure defect;

D O I：

暂无

中图分类号：

TQ174 [陶瓷工业];

学科分类号：

0805 ; 080502 ;

摘要：

Strontium doped perovskite-type Nd0.7Sr0.3MnO3 ceramics were synthesized completely by high-energy ball milling raw oxides of Nd2O3, SrCO3 and MnO2. The optimal ball milling time and mass ratio of milling balls to raw materials are 4 h and 10:1, respectively. The grain size of as-milled Nd0.7Sr0.3MnO3 ceramics ranges from 51 to 93 nm, and the fine particles contain two phases of crystalline phase and amorphous phase. For the Nd0.7Sr0.3MnO3 synthesized by ball milling and sequent heat treatment, a remarkable colossal electroresistance (CER) effect is observed and the CER ratio reaches 900% at Curie temperature TC when the load voltage increases from 0.1 to 0.8 V.

引用

页码：721 / 724

页数：4