Emergence of Room-Temperature Magnetic Ordering in Artificially Fabricated Ordered-Double-Perovskite Sr2FeRuO6

被引：25

作者：

Chang, Jaewan ^{[1
,2
]}

Lee, Kyujoon ^{[3
]}

Jung, Myung Hwa ^{[3
]}

Kwon, Ji-Hwan

Kim, Miyoung

Kim, Sang-Koog ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Natl Creat Res Ctr Spin Dynam & Spin Wave Devices, Seoul 151744, South Korea

[2] Seoul Natl Univ, Nanospin Lab, Res Inst Adv Mat, Dept Mat Sci & Engn, Seoul 151744, South Korea

[3] Sogang Univ, Dept Phys, Seoul 121742, South Korea

来源：

CHEMISTRY OF MATERIALS | 2011年 / 23卷 / 11期

关键词：

artificial oxide superlattice; ordered double perivskite; Sr2FeRuO6; magnetism; INTERFACES;

D O I：

10.1021/cm200454z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The emergence of room-temperature magnetic ordering in artificially fabricated ordered-double-perovskite Sr2FeRuO6 (SFRO) was investigated. The disorder of the distribution of Fe3+ and Ru5+ ions at octahedral sites due to the insufficient charge-valence difference between them contributes to spin frustration. The subsequently engineered SFRO samples were found to be of ordered double perovskite (ODP) and to exhibit a magnetic ordering temperature up to 390 K. The ordering of the Fe3+ and Ru5+ at the octahedral cation sites was more clearly revealed by the superlattice reflections according to the transmission electron microscopy (TEM) diffraction pattern of an ODP-SFRO film. An intensity scan in the column revealed that there was a high degree of Fe3+/Ru5+ ordering at the octahedral cation sites. The ODP-SFRO appeared to exhibit an intermediate behavior between an ideal ordered magnetic state and spin glass.

引用

页码：2693 / 2696

页数：4

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