Structure transition and charge competition on YFe2O4

Naoshi Ikeda; Ryosuke Mori; Shigeo Mori; Kay Kohn

doi:10.1080/00150190390206356

Structure transition and charge competition on YFe₂O₄

Naoshi Ikeda, Ryosuke Mori, Shigeo Mori, Kay Kohn

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

23 Citations (Scopus)

Abstract

We report the low temperature charge ordered structure and magnetic relaxation in nearly stoichiometric YFe 2 O 4 in which the charge frustration effect is considered to be dominant. The superlattice reflections have revealed the presence of four different phases with a triple, double, quadruple and septuplex charge-superstructure in the temperature range from room temperature to 130 K. The observed successive transitions have been proposed by a previous X-ray powder diffraction study. A slow relaxation of the superstructure was found at 130 K. Time dependence of the magnetic moment was observed at about 240 K to suggest a similar relaxation.

Original language	English
Pages (from-to)	175-184
Number of pages	10
Journal	Ferroelectrics
Volume	286
DOIs	https://doi.org/10.1080/00150190390206356
Publication status	Published - Jun 1 2003
Externally published	Yes

Keywords

Charge frustration
Charge order
Competing interaction
Frustration
Iron oxide
RFeO
Triangular lattice
YFeO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1080/00150190390206356

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abstract = "We report the low temperature charge ordered structure and magnetic relaxation in nearly stoichiometric YFe 2 O 4 in which the charge frustration effect is considered to be dominant. The superlattice reflections have revealed the presence of four different phases with a triple, double, quadruple and septuplex charge-superstructure in the temperature range from room temperature to 130 K. The observed successive transitions have been proposed by a previous X-ray powder diffraction study. A slow relaxation of the superstructure was found at 130 K. Time dependence of the magnetic moment was observed at about 240 K to suggest a similar relaxation.",

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AU - Ikeda, Naoshi

AU - Mori, Ryosuke

AU - Mori, Shigeo

AU - Kohn, Kay

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N2 - We report the low temperature charge ordered structure and magnetic relaxation in nearly stoichiometric YFe 2 O 4 in which the charge frustration effect is considered to be dominant. The superlattice reflections have revealed the presence of four different phases with a triple, double, quadruple and septuplex charge-superstructure in the temperature range from room temperature to 130 K. The observed successive transitions have been proposed by a previous X-ray powder diffraction study. A slow relaxation of the superstructure was found at 130 K. Time dependence of the magnetic moment was observed at about 240 K to suggest a similar relaxation.

AB - We report the low temperature charge ordered structure and magnetic relaxation in nearly stoichiometric YFe 2 O 4 in which the charge frustration effect is considered to be dominant. The superlattice reflections have revealed the presence of four different phases with a triple, double, quadruple and septuplex charge-superstructure in the temperature range from room temperature to 130 K. The observed successive transitions have been proposed by a previous X-ray powder diffraction study. A slow relaxation of the superstructure was found at 130 K. Time dependence of the magnetic moment was observed at about 240 K to suggest a similar relaxation.

KW - Charge frustration

KW - Charge order

KW - Competing interaction

KW - Frustration

KW - Iron oxide

KW - RFeO

KW - Triangular lattice

KW - YFeO

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