Enhanced ferromagnetic properties achieved by F-doping in BaFe1-xMnxO3-δ

Jun Huang; Jiwen Yang; Yangkai Wang; Jian Zhang; Jianlin Wang; Zhengping Fu; Ranran Peng; Yalin Lu

doi:10.1063/5.0186858

Enhanced ferromagnetic properties achieved by F-doping in BaFe1-xMnxO3-δ

J Chem Phys. 2024 Jan 21;160(3):034702. doi: 10.1063/5.0186858.

Authors

Jun Huang¹, Jiwen Yang¹, Yangkai Wang¹, Jian Zhang¹, Jianlin Wang^{2

3}, Zhengping Fu^{1

2

3}, Ranran Peng^{1

2

3}, Yalin Lu^{1

2

3}

Affiliations

¹ Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
² Hefei National Laboratory of Physical Science at the Microscale, University of Science and Technology of China, Hefei 230026, China.
³ Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, China.

PMID: 38226827
DOI: 10.1063/5.0186858

Abstract

Tailoring the crystal structure, spin, and charge state of perovskite oxides through fluorine ion doping is an attractive and effective strategy, which could significantly modify the physical and chemical properties of base oxides. Here, BaFe1-xMnxO3-δ (x = 0, 0.1, 0.2, 0.3) and BaFe1-xMnxO2.9-δF0.1 (x = 0.1, 0.2, 0.3), belonging to 6H-type BaFeO3-δ, are prepared and investigated to evaluate the impact of F- doping. The distortion of crystal structure and the reduced average valence of Mn and Fe confirm the preference for F- substitution in the hexagonal layer, which are found as the key factors for the improved magnetic properties, including ferromagnetic ordering temperature, coercive force, and remanent magnetization. Moreover, the valence reduction of B-site ions and the increased resistance distinctly indicate the expense of electron hole via fluorine doping. This work describes the adjustment of crystal structure, electronic configuration, and ferromagnetic performance by simple F- doping, which provides a prospect for practical magnetic materials.