摘要
经4h的高能球磨，钙钛矿结构氧化物Nd0.7Sr0.3Mn03完全合成，合成得到的样品颗粒尺寸范围在60～120nm，且大多数呈椭球状。继续球磨8h，出现了非晶无序相。然而，令人奇怪的是，再球磨非晶态样品6h，Nd0.7Sr0.3MnO3钙钛矿结构相又一次被合成。电子衍射结果也反应了初始原料随球磨时间的延长从多晶到非晶再到多晶的系列变化过程。
In this paper, Nd0.7Sr0.3MnO3 oxide with perovskite structure has been synthesized by ball milling starting materials for 4 h. The shape of the particle mostly is oval and the size of the particle ranges from 60 nm to 120 nm. The amorphous phase appears if we continue to mill the single-phase compound for another 8 h. To our surprise, the perovskite phase appears again subsequently milling the amorphous samples for another 6 h. The results of electron diffraction also show the series changes that from multicrystal to noncrystal and then to multicrystal.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第A03期1285-1287,共3页
Journal of Functional Materials
关键词
高能球磨
钙钛矿结构
磁电阻
high-energy ball milling
perovskite structure
colossal magnetoresistance（CMR）
作者简介
陈顺生（1975-），男，湖北大冶人，材料学专业在读硕士，师承杨昌平教授，从事掺杂稀土氧化物庞磁电阻（CMR）效应的研究。
通讯作者：杨昌平.
