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

Howon Lee; Taek Sun Jung; Hyun Jun Shin; Sang Hyup Oh; Kyung Ik Sim; Taewoo Ha; Young Jai Choi; Jae Hoon Kim

doi:10.1063/5.0070952

Terahertz spectroscopy of antiferromagnetic resonances in YFe_1-xMn_xO₃(0 ≤ x ≤ 0:4) across a spin reorientation transition

Howon Lee, Taek Sun Jung, Hyun Jun Shin, Sang Hyup Oh, Kyung Ik Sim, Taewoo Ha, Young Jai Choi, Jae Hoon Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	192903
Journal	Applied Physics Letters
Volume	119
Issue number	19
DOIs	https://doi.org/10.1063/5.0070952
Publication status	Published - 2021 Nov 8

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation (NRF) of Korea grants funded by the Korea government (MIST) (Nos. NRF-2021R1A2C3004989, NRF-2017R1A5A1014862, and NRF-2019R1A2C2002601) and by the Institute for Basic Science (No. IBS-R011-D1).

Publisher Copyright:
© 2021 Author(s).

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/5.0070952

Cite this

@article{2c65c51609174bc5aa87d9e7d8543008,

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

abstract = "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.",

author = "Howon Lee and Jung, {Taek Sun} and Shin, {Hyun Jun} and Oh, {Sang Hyup} and Sim, {Kyung Ik} and Taewoo Ha and Choi, {Young Jai} and Kim, {Jae Hoon}",

note = "Funding Information: This research was supported by the National Research Foundation (NRF) of Korea grants funded by the Korea government (MIST) (Nos. NRF-2021R1A2C3004989, NRF-2017R1A5A1014862, and NRF-2019R1A2C2002601) and by the Institute for Basic Science (No. IBS-R011-D1). Publisher Copyright: {\textcopyright} 2021 Author(s).",

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AU - Lee, Howon

AU - Jung, Taek Sun

AU - Shin, Hyun Jun

AU - Oh, Sang Hyup

AU - Sim, Kyung Ik

AU - Ha, Taewoo

AU - Choi, Young Jai

AU - Kim, Jae Hoon

N1 - Funding Information: This research was supported by the National Research Foundation (NRF) of Korea grants funded by the Korea government (MIST) (Nos. NRF-2021R1A2C3004989, NRF-2017R1A5A1014862, and NRF-2019R1A2C2002601) and by the Institute for Basic Science (No. IBS-R011-D1). Publisher Copyright: © 2021 Author(s).

PY - 2021/11/8

Y1 - 2021/11/8

N2 - 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.

AB - 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.

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