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Terahertz spectroscopy of antiferromagnetic resonances in YFe1-xMnxO3(0 ≤ x ≤ 0:4) across a spin reorientation transition

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Title
Terahertz spectroscopy of antiferromagnetic resonances in YFe1-xMnxO3(0 ≤ x ≤ 0:4) across a spin reorientation transition
Author(s)
Lee, Howon; Jung, Taek Sun; Shin, Hyun Jun; Oh, Sang Hyup; Kyung Ik Sim; Taewoo Ha; Choi, Young Jai; Kim, Jae Hoon
Publication Date
2021-11-08
Journal
Applied Physics Letters, v.119, no.19
Publisher
American Institute of Physics Inc.
Abstract
© 2022 AIP Publishing LLC. We have conducted a terahertz spectroscopic study of antiferromagnetic resonances in bulk orthoferrite YFe1-xMnxO3 0 ≤ x ≤ 0.4. Both the quasi-ferromagnetic resonance mode and the quasi-antiferromagnetic resonance mode in the weak ferromagnetic Γ4 phase disappear near the spin reorientation temperature, TSR, for the onset of the collinear antiferromagnetic Γ1 phase (x ≥ 0.1). Below TSR, an antiferromagnetic resonance mode emerges and exhibits a large blueshift with decreasing temperature. However, below 50 K, this mode softens considerably, and this tendency becomes stronger with Mn doping. We provide a deeper understanding of such behaviors of the antiferromagnetic resonance modes in terms of the influence of the Mn3+ ions on the magnetocrystalline anisotropy. Our results show that terahertz time-domain spectroscopy is a useful, complementary tool in tracking magnetic transitions and probing the interaction between disparate magnetic subsystems in antiferromagnetic materials with multiple ionic species.
URI
https://pr.ibs.re.kr/handle/8788114/10990
DOI
10.1063/5.0070952
ISSN
0003-6951
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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