节点文献

Effect of heat treatment on electroresistance in Nd0.67Sr0.33MnO3 ceramics

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具，请取消加速工具后下载。

【作者】 陈顺生； 王瑞龙； 王浩； 杨昌平；

【Author】 CHEN Shunsheng,WANG Ruilong,WANG Hao,YANG Changping (The Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus,Faculty of Physics and Electronic Technology,Hubei University,Wuhan 430062,China)

【机构】 The Provincial Key Laboratory of Piezoelectric Ceramics Materials and Apparatus,Faculty of Physics and Electronic Technology,Hubei University；

【摘要】 A remarkable CER(colossal electroresistance) effect was observed in a series of polycrystalline Nd0.67Sr0.33MnO3 samples synthe-sized by high energy ball milling successive heat treatment.The CER ratio increased with increasing heating time and reached 3580% at a low temperature for the Nd0.67Sr0.33MnO3 ceramic annealed up to 13 h as measuring current was enhanced from 5 to 500 μA.The result showed that the CER effect was strongly dependent on the sample’s microstructure,especially on the foreign phases which were gradually developed within grain boundaries when annealing time was more than 3 h.

【Abstract】 A remarkable CER(colossal electroresistance) effect was observed in a series of polycrystalline Nd0.67Sr0.33MnO3 samples synthe-sized by high energy ball milling successive heat treatment.The CER ratio increased with increasing heating time and reached 3580% at a low temperature for the Nd0.67Sr0.33MnO3 ceramic annealed up to 13 h as measuring current was enhanced from 5 to 500 μA.The result showed that the CER effect was strongly dependent on the sample’s microstructure,especially on the foreign phases which were gradually developed within grain boundaries when annealing time was more than 3 h.

【关键词】 colossal electroresistance； perovskite； heat treatment； microstructure； rare earths；
【Key words】 colossal electroresistance； perovskite； heat treatment； microstructure； rare earths；
【基金】 supported by the National Natural Science Foundation of China (10774040 and 10911120055/A0402);the Program for New Century Excellent Talents in University (NCET-08-0674);the Special Foundation for Young Scientists of Educational Commission of Hubei Province (Q200710008)
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2010年02期
  • 【分类号】TQ174.1
  • 【被引频次】2
  • 【下载频次】31
打印本页
节点文献中：