Enhanced Magnetization in CoFe2O4 Through Hydrogen Doping

Zhuolu Li; Yingjie Lyu; Zhao Ran; Yujia Wang; Yang Zhang; Nianpeng Lu; Meng Wang; Michel Sassi; Thai Duy Ha; Alpha T. N'Diaye; Padraic Shafer; Carolyn Pearce; Kevin Rosso; Elke Arenholz; Jenh Yih Juang; Qing He; Ying Hao Chu; Weidong Luo; Pu Yu

doi:10.1002/adfm.202212298

Enhanced Magnetization in CoFe₂O₄ Through Hydrogen Doping

Zhuolu Li
, Yingjie Lyu
, Zhao Ran
, Yujia Wang
, Yang Zhang
, Nianpeng Lu
, Meng Wang
, Michel Sassi
, Thai Duy Ha
, Alpha T. N'Diaye
, Padraic Shafer
, Carolyn Pearce
, Kevin Rosso
, Elke Arenholz
, Jenh Yih Juang
, Qing He
, Ying Hao Chu
, Weidong Luo^*
, Pu Yu^*

^*此作品的通讯作者

Tsinghua University
Key Laboratory for Laser Plasmas (Ministry of Education)
Shanghai Jiao Tong University
CAS - Institute of Physics
Physical and Computational Sciences Directorate
Pacific Northwest National Laboratory
Department of Electrophysics
National Yang Ming Chiao Tung University
United States Department of Energy
Durham University
Department of Materials Science and Engineering
National Tsing Hua University
Institute of Natural Sciences
Collaborative Innovation Center of Quantum Matter

科研成果: 期刊稿件 › 文章 › 同行评审

29 引用（Scopus）

摘要

Magnetic spinel oxides have attracted extensive research interest due to their rich physics and wide range of applications. However, these materials invariably suffer suppressed magnetization, due to structural imperfections (e.g., disorder, anti-site defects, etc.). Herein, a dramatic enhanced magnetization is obtained with an increasement of 5 µ_B/u.c in CoFe₂O₄ (CFO) through ionic liquid gating induced hydrogen doping. The intercalated hydrogen ions lead to both distinct lattice expansion of ≈0.7% and notable Fe valence state reduction through electron doping, in which ≈17% Fe³⁺ is reduced into Fe²⁺. These facts collectively trigger a site-specific spin-flip on tetrahedrally coordinated Co²⁺ sites that enhances the net ferrimagnetic moment nearly to its theoretical maximum for perfect CFO.

源语言	英语
期刊论文编号	2212298
期刊	Advanced Functional Materials
卷	33
期	17
DOI	https://doi.org/10.1002/adfm.202212298
出版状态	已出版 - 25 4月 2023
已对外发布	是

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Li, Z., Lyu, Y., Ran, Z., Wang, Y., Zhang, Y., Lu, N., Wang, M., Sassi, M., Ha, T. D., T. N'Diaye, A., Shafer, P., Pearce, C., Rosso, K., Arenholz, E., Juang, J. Y., He, Q., Chu, Y. H., Luo, W., & Yu, P. (2023). Enhanced Magnetization in CoFe₂O₄ Through Hydrogen Doping. Advanced Functional Materials, 33(17), 期刊论文 2212298. https://doi.org/10.1002/adfm.202212298

@article{ecf7789e60fb4028bf4a8e69aeb293cf,

title = "Enhanced Magnetization in CoFe2O4 Through Hydrogen Doping",

abstract = "Magnetic spinel oxides have attracted extensive research interest due to their rich physics and wide range of applications. However, these materials invariably suffer suppressed magnetization, due to structural imperfections (e.g., disorder, anti-site defects, etc.). Herein, a dramatic enhanced magnetization is obtained with an increasement of 5 µB/u.c in CoFe2O4 (CFO) through ionic liquid gating induced hydrogen doping. The intercalated hydrogen ions lead to both distinct lattice expansion of ≈0.7\% and notable Fe valence state reduction through electron doping, in which ≈17\% Fe3+ is reduced into Fe2+. These facts collectively trigger a site-specific spin-flip on tetrahedrally coordinated Co2+ sites that enhances the net ferrimagnetic moment nearly to its theoretical maximum for perfect CFO.",

keywords = "CoFe O, hydrogenation, ionic liquid gating, magnetization, spinel oxide",

author = "Zhuolu Li and Yingjie Lyu and Zhao Ran and Yujia Wang and Yang Zhang and Nianpeng Lu and Meng Wang and Michel Sassi and Ha, \{Thai Duy\} and \{T. N'Diaye\}, Alpha and Padraic Shafer and Carolyn Pearce and Kevin Rosso and Elke Arenholz and Juang, \{Jenh Yih\} and Qing He and Chu, \{Ying Hao\} and Weidong Luo and Pu Yu",

note = "Publisher Copyright: {\textcopyright} 2023 Wiley-VCH GmbH.",

year = "2023",

month = apr,

day = "25",

doi = "10.1002/adfm.202212298",

language = "English",

volume = "33",

journal = "Advanced Functional Materials",

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TY - JOUR

T1 - Enhanced Magnetization in CoFe2O4 Through Hydrogen Doping

AU - Li, Zhuolu

AU - Lyu, Yingjie

AU - Ran, Zhao

AU - Wang, Yujia

AU - Zhang, Yang

AU - Lu, Nianpeng

AU - Wang, Meng

AU - Sassi, Michel

AU - Ha, Thai Duy

AU - T. N'Diaye, Alpha

AU - Shafer, Padraic

AU - Pearce, Carolyn

AU - Rosso, Kevin

AU - Arenholz, Elke

AU - Juang, Jenh Yih

AU - He, Qing

AU - Chu, Ying Hao

AU - Luo, Weidong

AU - Yu, Pu

PY - 2023/4/25

Y1 - 2023/4/25

N2 - Magnetic spinel oxides have attracted extensive research interest due to their rich physics and wide range of applications. However, these materials invariably suffer suppressed magnetization, due to structural imperfections (e.g., disorder, anti-site defects, etc.). Herein, a dramatic enhanced magnetization is obtained with an increasement of 5 µB/u.c in CoFe2O4 (CFO) through ionic liquid gating induced hydrogen doping. The intercalated hydrogen ions lead to both distinct lattice expansion of ≈0.7% and notable Fe valence state reduction through electron doping, in which ≈17% Fe3+ is reduced into Fe2+. These facts collectively trigger a site-specific spin-flip on tetrahedrally coordinated Co2+ sites that enhances the net ferrimagnetic moment nearly to its theoretical maximum for perfect CFO.

AB - Magnetic spinel oxides have attracted extensive research interest due to their rich physics and wide range of applications. However, these materials invariably suffer suppressed magnetization, due to structural imperfections (e.g., disorder, anti-site defects, etc.). Herein, a dramatic enhanced magnetization is obtained with an increasement of 5 µB/u.c in CoFe2O4 (CFO) through ionic liquid gating induced hydrogen doping. The intercalated hydrogen ions lead to both distinct lattice expansion of ≈0.7% and notable Fe valence state reduction through electron doping, in which ≈17% Fe3+ is reduced into Fe2+. These facts collectively trigger a site-specific spin-flip on tetrahedrally coordinated Co2+ sites that enhances the net ferrimagnetic moment nearly to its theoretical maximum for perfect CFO.

KW - CoFe O

KW - hydrogenation

KW - ionic liquid gating

KW - magnetization

KW - spinel oxide

UR - https://www.scopus.com/pages/publications/85147979545

U2 - 10.1002/adfm.202212298

DO - 10.1002/adfm.202212298

M3 - Article

AN - SCOPUS:85147979545

SN - 1616-301X

VL - 33

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 17

M1 - 2212298

ER -

Enhanced Magnetization in CoFe2O4 Through Hydrogen Doping

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Enhanced Magnetization in CoFe₂O₄ Through Hydrogen Doping