Effect of oxygen vacancies on charge ordered structure in YFe 2O4-δ

Shigeo Mori; Satoshi Shinohara; Yoji Matsuo; Yoichi Horibe; Kenji Yoshii; Naoshi Ikeda

doi:10.1143/JJAP.47.7595

Effect of oxygen vacancies on charge ordered structure in YFe ₂O_4-δ

Shigeo Mori, Satoshi Shinohara, Yoji Matsuo, Yoichi Horibe, Kenji Yoshii, Naoshi Ikeda

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

11 Citations (Scopus)

Abstract

The effect of oxygen vacancies on the charge ordered structure at room temperature (RT) in YFe₂O_4-δ was investigated by transmission electron microscopy (TEM) and it was found that the charge ordered structure is sensitive to the amount of oxygen vacancies. Real-space images of the three-dimensional charge ordered structure revealed that the average size of charge ordered domains can be estimated to be 20nm. These nanosized charge ordered domains are responsible for the dielectric properties of YFe ₂O_4-δ. The charge ordering processes were also examined by in-situ TEM.

Original language	English
Pages (from-to)	7595-7598
Number of pages	4
Journal	Japanese journal of applied physics
Volume	47
Issue number	9 PART 2
DOIs	https://doi.org/10.1143/JJAP.47.7595
Publication status	Published - Sep 19 2008

Keywords

Charge ordering
Multiferroic material
Transmission electron microscopy

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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AU - Mori, Shigeo

AU - Shinohara, Satoshi

AU - Matsuo, Yoji

AU - Horibe, Yoichi

AU - Yoshii, Kenji

AU - Ikeda, Naoshi

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AB - The effect of oxygen vacancies on the charge ordered structure at room temperature (RT) in YFe2O4-δ was investigated by transmission electron microscopy (TEM) and it was found that the charge ordered structure is sensitive to the amount of oxygen vacancies. Real-space images of the three-dimensional charge ordered structure revealed that the average size of charge ordered domains can be estimated to be 20nm. These nanosized charge ordered domains are responsible for the dielectric properties of YFe 2O4-δ. The charge ordering processes were also examined by in-situ TEM.

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KW - Multiferroic material

KW - Transmission electron microscopy

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