J. Mater. Sci. Technol. ›› 2010, Vol. 26 ›› Issue (8): 721-724.

• Novel Processing and Characterization Methods • 上一篇    下一篇

Study on the ball milling synthesis and property of Nd0.7Sr0.3MnO3 manganites

陈顺生1,杨昌平2,lingfangxu3,shaolongtang4   

  1. 1. 湖北大学物理学与电子技术学院027-63423753
    2. 湖北大学
    3. Hubei University
    4. Nanjing University
  • 收稿日期:2009-05-05 修回日期:2009-10-16 出版日期:2010-08-28 发布日期:2010-08-23
  • 通讯作者: 杨昌平
  • 基金资助:

    the Natural Science Foundation of China

Ball Milling Synthesis and Property of Nd0:7Sr0:3MnO3 Manganites

Shunsheng Chen1), Changping Yang1), Lingfang Xu1), Shaolong Tang2)   

  1. 1) The Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus, Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062, China
    2) Department of Physics, Nanjing University, Nanjing 210093, China
  • Received:2009-05-05 Revised:2009-10-16 Online:2010-08-28 Published:2010-08-23
  • Contact: Changping Yang
  • Supported by:

    the National Natural Science Foundation of China (Grant No. 10774040) and the joint Chinese-Russian Project

RichHTML

1

PDF (PC)

1427

摘要：

Strontium doped perovskite-type Nd0.7Sr0.3MnO3 ceramics is 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 and raw materials are 4 hours and 10:1 respectively. The grain size of as-milled Nd0.7Sr0.3MnO3 ceramics ranges from 51 nm 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 CER effect is observed and the CER ratio reaches 900 % at TC when the load voltage increases from 0.1 V to 0.8 V.

关键词: High-energy ball milling, Perovskite structure, Colossal electroresistance (CER), Microstructure defect

Abstract:

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.

Key words: High-energy ball milling, Perovskite structure, Colossal electroresistance (CER), Microstructure defect