Direct observation of cationic ordering in double perovskite Sr 2FeReO6 crystals

Si Young Choi; Jong Bong Lim; Yuichi Ikuhara; Danilo Suvorov; Jae Ho Jeon

doi:10.1017/S1431927613012269

Direct observation of cationic ordering in double perovskite Sr ₂FeReO₆ crystals

Si Young Choi, Jong Bong Lim, Yuichi Ikuhara, Danilo Suvorov, Jae Ho Jeon

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Two kinds of Sr2FeReO6 (SFRO) samples, pristine SFRO and Re-excess SFRO, were prepared and we visualized the local atomic structure in terms of cationic ordering in the prepared SFRO samples via high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM). HAADF-STEM results demonstrated the high degree of cationic ordering maintains in both the pristine SFRO and Re-excess SFRO samples. On the other hand, defective structures such as antiphase boundary and Re-deficient phase were observed dominantly in the pristine SFRO, and thus the poor magnetic property in the pristine SFRO is attributed to those defective structures related with the frustrated Fe/Re ordering.

Original language	English
Pages (from-to)	25-28
Number of pages	4
Journal	Microscopy and Microanalysis
Volume	19
Issue number	SUPPL. 5
DOIs	https://doi.org/10.1017/S1431927613012269
Publication status	Published - 2013 Aug
Externally published	Yes

Keywords

cationic ordering
double perovskite
high-angle annular dark-field
scanning transmission electron microscopy

ASJC Scopus subject areas

Instrumentation

Access to Document

10.1017/S1431927613012269

Cite this

@article{a209659aa4634d58971c5e1cb8998a24,

title = "Direct observation of cationic ordering in double perovskite Sr 2FeReO6 crystals",

abstract = "Two kinds of Sr2FeReO6 (SFRO) samples, pristine SFRO and Re-excess SFRO, were prepared and we visualized the local atomic structure in terms of cationic ordering in the prepared SFRO samples via high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM). HAADF-STEM results demonstrated the high degree of cationic ordering maintains in both the pristine SFRO and Re-excess SFRO samples. On the other hand, defective structures such as antiphase boundary and Re-deficient phase were observed dominantly in the pristine SFRO, and thus the poor magnetic property in the pristine SFRO is attributed to those defective structures related with the frustrated Fe/Re ordering.",

keywords = "cationic ordering, double perovskite, high-angle annular dark-field, scanning transmission electron microscopy",

author = "Choi, {Si Young} and Lim, {Jong Bong} and Yuichi Ikuhara and Danilo Suvorov and Jeon, {Jae Ho}",

year = "2013",

month = aug,

doi = "10.1017/S1431927613012269",

language = "English",

volume = "19",

pages = "25--28",

journal = "Microscopy and Microanalysis",

issn = "1431-9276",

publisher = "Cambridge University Press",

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}

TY - JOUR

T1 - Direct observation of cationic ordering in double perovskite Sr 2FeReO6 crystals

AU - Choi, Si Young

AU - Lim, Jong Bong

AU - Ikuhara, Yuichi

AU - Suvorov, Danilo

AU - Jeon, Jae Ho

PY - 2013/8

Y1 - 2013/8

N2 - Two kinds of Sr2FeReO6 (SFRO) samples, pristine SFRO and Re-excess SFRO, were prepared and we visualized the local atomic structure in terms of cationic ordering in the prepared SFRO samples via high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM). HAADF-STEM results demonstrated the high degree of cationic ordering maintains in both the pristine SFRO and Re-excess SFRO samples. On the other hand, defective structures such as antiphase boundary and Re-deficient phase were observed dominantly in the pristine SFRO, and thus the poor magnetic property in the pristine SFRO is attributed to those defective structures related with the frustrated Fe/Re ordering.

AB - Two kinds of Sr2FeReO6 (SFRO) samples, pristine SFRO and Re-excess SFRO, were prepared and we visualized the local atomic structure in terms of cationic ordering in the prepared SFRO samples via high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM). HAADF-STEM results demonstrated the high degree of cationic ordering maintains in both the pristine SFRO and Re-excess SFRO samples. On the other hand, defective structures such as antiphase boundary and Re-deficient phase were observed dominantly in the pristine SFRO, and thus the poor magnetic property in the pristine SFRO is attributed to those defective structures related with the frustrated Fe/Re ordering.

KW - cationic ordering

KW - double perovskite

KW - high-angle annular dark-field

KW - scanning transmission electron microscopy

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