Macroscopic phase separation in layered manganite induced by a surface effect

被引：4

作者：

Dho, J ^{[1
]}

Kim, WS ^{[1
]}

Choi, HS ^{[1
]}

Chi, EO ^{[1
]}

Hur, NH ^{[1
]}

机构：

[1] Korea Res Inst Stand & Sci, Ctr CMR Mat, Taejon 305600, South Korea

来源：

SOLID STATE COMMUNICATIONS | 2001年 / 117卷 / 09期

关键词：

magnetically ordered materials; layered manganites;

D O I：

10.1016/S0038-1098(00)00512-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on the origin of the perovskite phase intergrown in the layered manganite, Sr1.6La1.4Mn2O7. X-ray powder diffraction, magnetization, and transport measurements on the Sr1.6La1.4Mn2O7 materials prepared under various conditions show that the perovskite phase is grown predominantly on the surface region in contact with either air or the substrate. With intermediate grinding and sintering the perovskite impurity increases rather than transforms to Sr1.6La1.4Mn2O7. The results provide important information for the understanding of the layered manganite system in which the compositional fluctuation occurs naturally due to the intergrown perovskite phase. (C) 2001 Published by Elsevier Science Ltd.

引用

页码：517 / 521

页数：5

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