Dielectric anomaly and structural phase transitions in YFe 2O4-δ

Y. Horibe; K. Kishimoto; S. Mori; N. Ikeda

doi:10.1080/10584580490898876

Dielectric anomaly and structural phase transitions in YFe ₂O_4-δ

Y. Horibe, K. Kishimoto, S. Mori, N. Ikeda

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

2 Citations (Scopus)

Abstract

We examined structural changes related to the charge ordering (CO) in the temperature window between 100K and room temperature (RT) in YFe ₂O_4-δ by transmission electron microscopy. Characteristic diffuse scattering elongated along the [001] direction through the (1/3 1/3 0)-type reciprocal positions was found at RT, which is related to nano-sized domains due to the CO. In addition, we found the presence of the superlattice structures characterized by the (1/4 1/4 0)-type modulation vector at 150K and by the (0 1/2 0)-type modulation vector at 200 K. The changes in the superlattice structures as a function of the temperature should be strongly related to the dielectric anomalies in YFe₂O_4-δ.

Original language	English
Pages (from-to)	151-157
Number of pages	7
Journal	Integrated Ferroelectrics
Volume	67
DOIs	https://doi.org/10.1080/10584580490898876
Publication status	Published - 2004
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Control and Systems Engineering
Ceramics and Composites
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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title = "Dielectric anomaly and structural phase transitions in YFe 2O4-δ",

abstract = "We examined structural changes related to the charge ordering (CO) in the temperature window between 100K and room temperature (RT) in YFe 2O4-δ by transmission electron microscopy. Characteristic diffuse scattering elongated along the [001] direction through the (1/3 1/3 0)-type reciprocal positions was found at RT, which is related to nano-sized domains due to the CO. In addition, we found the presence of the superlattice structures characterized by the (1/4 1/4 0)-type modulation vector at 150K and by the (0 1/2 0)-type modulation vector at 200 K. The changes in the superlattice structures as a function of the temperature should be strongly related to the dielectric anomalies in YFe2O4-δ.",

author = "Y. Horibe and K. Kishimoto and S. Mori and N. Ikeda",

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doi = "10.1080/10584580490898876",

language = "English",

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journal = "Integrated Ferroelectrics",

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T1 - Dielectric anomaly and structural phase transitions in YFe 2O4-δ

AU - Horibe, Y.

AU - Kishimoto, K.

AU - Mori, S.

AU - Ikeda, N.

PY - 2004

Y1 - 2004

N2 - We examined structural changes related to the charge ordering (CO) in the temperature window between 100K and room temperature (RT) in YFe 2O4-δ by transmission electron microscopy. Characteristic diffuse scattering elongated along the [001] direction through the (1/3 1/3 0)-type reciprocal positions was found at RT, which is related to nano-sized domains due to the CO. In addition, we found the presence of the superlattice structures characterized by the (1/4 1/4 0)-type modulation vector at 150K and by the (0 1/2 0)-type modulation vector at 200 K. The changes in the superlattice structures as a function of the temperature should be strongly related to the dielectric anomalies in YFe2O4-δ.

AB - We examined structural changes related to the charge ordering (CO) in the temperature window between 100K and room temperature (RT) in YFe 2O4-δ by transmission electron microscopy. Characteristic diffuse scattering elongated along the [001] direction through the (1/3 1/3 0)-type reciprocal positions was found at RT, which is related to nano-sized domains due to the CO. In addition, we found the presence of the superlattice structures characterized by the (1/4 1/4 0)-type modulation vector at 150K and by the (0 1/2 0)-type modulation vector at 200 K. The changes in the superlattice structures as a function of the temperature should be strongly related to the dielectric anomalies in YFe2O4-δ.

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JO - Integrated Ferroelectrics

JF - Integrated Ferroelectrics

ER -

Dielectric anomaly and structural phase transitions in YFe ₂O_4-δ

Abstract

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