Valence control of charge and orbital frustrated system YbFe2O4 with electrochemical Li+ intercalation

S. Murase; Y. Yoshikawa; K. Fujiwara; Y. Fukada; T. Teranishi; J. Kano; T. Fujii; Y. Inada; M. Katayama; K. Yoshii; T. Tsuji; D. Matsumura; N. Ikeda

doi:10.1016/j.jpcs.2021.110468

Valence control of charge and orbital frustrated system YbFe₂O₄ with electrochemical Li⁺ intercalation

S. Murase, Y. Yoshikawa, K. Fujiwara, Y. Fukada, T. Teranishi, J. Kano, T. Fujii, Y. Inada, M. Katayama, K. Yoshii, T. Tsuji, D. Matsumura, N. Ikeda

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

Abstract

We report an attempt valence control of the mixed valence iron triangular oxide YbFe₂O₄ to develop an effective technique controling the frustration of charges in strongly correlated electron systems. The electrochemical doping of Li ⁺ into YbFe₂O₄ was examined on a cell-type sample similar to the Li-ion secondary battery cell. Systematic changes in the lattice constant and Fe – Fe and Fe–Yb distance were observed with Li doping. Maximum value of the doping was over 300 mAh/g. An EXAFS experiment indicated that Li positioned between Yb octahedron layer (U-layer) and Fe-bipyramidal layer (W-layer). However, detailed change of iron valence state of YbFe₂O₄was not clearly observed because of the superimpose of the signal from iron metal nano particles in XANES observation. We discuss that the uncertainty might arise from the inhomogeneous distribution of the sample particle size, which might prevent the homogeneous doping of Li because the doping occurs on the surface of each nano-particles.

Original language	English
Article number	110468
Journal	Journal of Physics and Chemistry of Solids
Volume	162
DOIs	https://doi.org/10.1016/j.jpcs.2021.110468
Publication status	Published - Mar 2022

Keywords

Charge frustration
Frustration control
Li doping
Orbital frustration
RFeO
Spin frustration
Triangular lattice
YbFeO

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/j.jpcs.2021.110468

Cite this

Murase, S., Yoshikawa, Y., Fujiwara, K., Fukada, Y., Teranishi, T., Kano, J., Fujii, T., Inada, Y., Katayama, M., Yoshii, K., Tsuji, T., Matsumura, D., & Ikeda, N. (2022). Valence control of charge and orbital frustrated system YbFe₂O₄ with electrochemical Li⁺ intercalation. Journal of Physics and Chemistry of Solids, 162, [110468]. https://doi.org/10.1016/j.jpcs.2021.110468

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title = "Valence control of charge and orbital frustrated system YbFe2O4 with electrochemical Li+ intercalation",

abstract = "We report an attempt valence control of the mixed valence iron triangular oxide YbFe2O4 to develop an effective technique controling the frustration of charges in strongly correlated electron systems. The electrochemical doping of Li + into YbFe2O4 was examined on a cell-type sample similar to the Li-ion secondary battery cell. Systematic changes in the lattice constant and Fe – Fe and Fe–Yb distance were observed with Li doping. Maximum value of the doping was over 300 mAh/g. An EXAFS experiment indicated that Li positioned between Yb octahedron layer (U-layer) and Fe-bipyramidal layer (W-layer). However, detailed change of iron valence state of YbFe2O4was not clearly observed because of the superimpose of the signal from iron metal nano particles in XANES observation. We discuss that the uncertainty might arise from the inhomogeneous distribution of the sample particle size, which might prevent the homogeneous doping of Li because the doping occurs on the surface of each nano-particles.",

keywords = "Charge frustration, Frustration control, Li doping, Orbital frustration, RFeO, Spin frustration, Triangular lattice, YbFeO",

author = "S. Murase and Y. Yoshikawa and K. Fujiwara and Y. Fukada and T. Teranishi and J. Kano and T. Fujii and Y. Inada and M. Katayama and K. Yoshii and T. Tsuji and D. Matsumura and N. Ikeda",

note = "Funding Information: This work was supported by the Grants-in-Aid for Scientific Research KAKENHI 19H01827 and 20H02829 and the proposal applications for SPring-8 ( 2018A3609 and 2018B3611 ), and Ritsumeikan SR ( 2016, R1501 ). Publisher Copyright: {\textcopyright} 2021 The Authors",

year = "2022",

month = mar,

doi = "10.1016/j.jpcs.2021.110468",

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journal = "Journal of Physics and Chemistry of Solids",

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T1 - Valence control of charge and orbital frustrated system YbFe2O4 with electrochemical Li+ intercalation

AU - Murase, S.

AU - Yoshikawa, Y.

AU - Fujiwara, K.

AU - Fukada, Y.

AU - Teranishi, T.

AU - Kano, J.

AU - Fujii, T.

AU - Inada, Y.

AU - Katayama, M.

AU - Yoshii, K.

AU - Tsuji, T.

AU - Matsumura, D.

AU - Ikeda, N.

N1 - Funding Information: This work was supported by the Grants-in-Aid for Scientific Research KAKENHI 19H01827 and 20H02829 and the proposal applications for SPring-8 ( 2018A3609 and 2018B3611 ), and Ritsumeikan SR ( 2016, R1501 ). Publisher Copyright: © 2021 The Authors

PY - 2022/3

Y1 - 2022/3

N2 - We report an attempt valence control of the mixed valence iron triangular oxide YbFe2O4 to develop an effective technique controling the frustration of charges in strongly correlated electron systems. The electrochemical doping of Li + into YbFe2O4 was examined on a cell-type sample similar to the Li-ion secondary battery cell. Systematic changes in the lattice constant and Fe – Fe and Fe–Yb distance were observed with Li doping. Maximum value of the doping was over 300 mAh/g. An EXAFS experiment indicated that Li positioned between Yb octahedron layer (U-layer) and Fe-bipyramidal layer (W-layer). However, detailed change of iron valence state of YbFe2O4was not clearly observed because of the superimpose of the signal from iron metal nano particles in XANES observation. We discuss that the uncertainty might arise from the inhomogeneous distribution of the sample particle size, which might prevent the homogeneous doping of Li because the doping occurs on the surface of each nano-particles.

AB - We report an attempt valence control of the mixed valence iron triangular oxide YbFe2O4 to develop an effective technique controling the frustration of charges in strongly correlated electron systems. The electrochemical doping of Li + into YbFe2O4 was examined on a cell-type sample similar to the Li-ion secondary battery cell. Systematic changes in the lattice constant and Fe – Fe and Fe–Yb distance were observed with Li doping. Maximum value of the doping was over 300 mAh/g. An EXAFS experiment indicated that Li positioned between Yb octahedron layer (U-layer) and Fe-bipyramidal layer (W-layer). However, detailed change of iron valence state of YbFe2O4was not clearly observed because of the superimpose of the signal from iron metal nano particles in XANES observation. We discuss that the uncertainty might arise from the inhomogeneous distribution of the sample particle size, which might prevent the homogeneous doping of Li because the doping occurs on the surface of each nano-particles.

KW - Charge frustration

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KW - Orbital frustration

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KW - Triangular lattice

KW - YbFeO

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