Observations of long-period structures associated with charge ordering in Bi0.2Ca0.8MnO3

被引：53

作者：

Murakami, Y ^{[1
]}

Shindo, D ^{[1
]}

Chiba, H ^{[1
]}

Kikuchi, M ^{[1
]}

Syono, Y ^{[1
]}

机构：

[1] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 98077,JAPAN

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.55.15043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Long-period structures with 32- and 36-fold periodicity to the original unit lattice distance were observed in a perovskite manganese oxide Bi0.2Ca0.8MnO3 at around 130 K, in addition to the one with fourfold periodicity. Quantitative electron diffraction profiles were measured for the long-period structure, where the intensity of superlattice reflections was observed to increase with increasing scattering angle due to static strain. This result gave a reasonable explanation for occurrence of the charge ordering of Mn3+ and Mn4+ ions, which was responsible for the creation of the long-period structures in Bi0.2Ca0.8MnO3.

引用

页码：15043 / 15047

页数：5

共 19 条

[1] Impact of charge ordering on magnetic correlations in perovskite (Bi,Ca)MnO3 [J].