Doping effects of indium and copper on ferromagnetism in N-type magnetic semiconductor Ba(Zn,Co)2As2

We report the manipulation of ferromagnetism in n-type magnetic semiconductor Ba(Zn,Co)<sub>2</sub>As<sub>2</sub> through carriers' doping. Doping In or Cu into Zn-sites introduces additional n-type or p-type carriers, respectively. Focusing on Ba(Zn<sub>0.97</sub>Co<sub>0.03</sub>)<sub>2</sub>As<sub>2</sub> which has a [Formula: see text] ∼ 31 K, In doping introduces additional n-type carriers and 2% In doping drastically improves the ferromagnetic transition temperature by 16% to 36 K. In contrast, 1.5% Cu doping suppresses [Formula: see text] by 52% to 15 K; 3% Cu doping turns the dominant carrier to p-type, and eventually transforms the ferromagnetic ordering into a paramagnetic state. Our experimental results unequivocally demonstrate that the magnetic ordering in Ba(Zn,Co)<sub>2</sub>As<sub>2</sub> is carriers' mediated ferromagnetism, and its ground states can be manipulated by carriers.

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Publication Details

Journal
Scientific Reports
Published
2025-03-28
DOI
https://doi.org/10.1038/s41598-025-94897-z
Citations
1
Primary Topic
Iron-based superconductors research
Type
article
Field-Weighted Citation Impact
0.43

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article

Doping effects of indium and copper on ferromagnetism in N-type magnetic semiconductor Ba(Zn,Co)2As2

Fanlong Ning, Yilun Gu, Lingfeng Xie, Xueqin Zhao et al.
1 citations
Scientific Reports
Iron-based superconductors research
0.43
article

Doping effects of indium and copper on ferromagnetism in N-type magnetic semiconductor Ba(Zn,Co)2As2

Fanlong Ning, Yilun Gu, Lingfeng Xie, Xueqin Zhao, Hongjian Tang, Licheng Fu, Qiaolin Yang, Guoxiang Zhi, Zhicheng Xu, Xun Pan, Jinou Dong
article en
1 citations

Abstract

We report the manipulation of ferromagnetism in n-type magnetic semiconductor Ba(Zn,Co)<sub>2</sub>As<sub>2</sub> through carriers' doping. Doping In or Cu into Zn-sites introduces additional n-type or p-type carriers, respectively. Focusing on Ba(Zn<sub>0.97</sub>Co<sub>0.03</sub>)<sub>2</sub>As<sub>2</sub> which has a [Formula: see text] ∼ 31 K, In doping introduces additional n-type carriers and 2% In doping drastically improves the ferromagnetic transition temperature by 16% to 36 K. In contrast, 1.5% Cu doping suppresses [Formula: see text] by 52% to 15 K; 3% Cu doping turns the dominant carrier to p-type, and eventually transforms the ferromagnetic ordering into a paramagnetic state. Our experimental results unequivocally demonstrate that the magnetic ordering in Ba(Zn,Co)<sub>2</sub>As<sub>2</sub> is carriers' mediated ferromagnetism, and its ground states can be manipulated by carriers.

Scientific ReportsVol. 15(1)
Chifeng University (CN), Collaborative Innovation Center of Advanced Microstructures (CN), Zhejiang University (CN), Nanjing University (CN)
National Natural Science Foundation of China, National Key Research and Development Program of China
Openalex Percentile: Top 44%
Iron-based superconductors research
0.43
DOIOpen Access PDFOpenAlex
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Doping effects of indium and copper on ferromagnetism in N-type magnetic semiconductor Ba(Zn,Co)2As2 — Fanlong Ning, Yilun Gu, et al. · Scientific Reports (2025) | TGRS Research Map | TGRS