Enhanced orbital magnetic moment of Co film grown on Fe3O4(001)

Zhe Zhang; Xianyang Lu; Zhihao Li; Zhuoyi Li; Yu Yan; Yuzhe Chen; Jun Du; Fangyuan Zhu; Jiefeng Cao; Yong Wang; Yao Li; Liang He; Jing Wu; Rong Zhang; Yongbing Xu

doi:10.1063/5.0176740

AIP Advances (Feb 2024)

Enhanced orbital magnetic moment of Co film grown on Fe3O4(001)

Zhe Zhang,
Xianyang Lu,
Zhihao Li,
Zhuoyi Li,
Yu Yan,
Yuzhe Chen,
Jun Du,
Fangyuan Zhu,
Jiefeng Cao,
Yong Wang,
Yao Li,
Liang He,
Jing Wu,
Rong Zhang,
Yongbing Xu

Affiliations

Zhe Zhang: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Xianyang Lu: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Zhihao Li: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Zhuoyi Li: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Yu Yan: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Yuzhe Chen: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Jun Du: Department of Physics, Nanjing University, Nanjing 210093, China
Fangyuan Zhu: Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
Jiefeng Cao: Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
Yong Wang: Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
Yao Li: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Liang He: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Jing Wu: York-Nanjing International Joint Center in Spintronics, Department of Electronics and Physics, University of York, York YO10 5DD, United Kingdom
Rong Zhang: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
Yongbing Xu: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China

DOI: https://doi.org/10.1063/5.0176740
Journal volume & issue: Vol. 14, no. 2
pp. 025049 – 025049-7

Abstract

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We investigate the magnetic and electronic properties of Co films on Fe3O4(001) achieved through epitaxial growth using magnetron sputtering. X-ray magnetic circularly dichroism measurements characterize the atomic magnetism. Compared to Co films on the MgO substrate, Co on Fe3O4 exhibits a 96% enhancement in orbital magnetic moment (from 0.25 to 0.49 µB/atom) and an increase in spin magnetic moment (from 1.37 to 1.53 µB/atom), resulting in an increased mratio(ml/ms) from 0.18 to 0.32. This enhancement of the orbital moment emerges as a consequence of the interface interaction between Co and Fe3O4. Density functional theory calculations attribute this heightened orbital magnetic moment to the robust electronic exchange interactions. Our findings not only offer insights into the modulation of magnetic and electronic characteristics in Co-based magnetic heterostructures but also provide valuable implications for the potential application of magnetic oxide/ferromagnetic heterostructures in future spintronic devices.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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