Spin-flip-driven reversal of the angle-dependent magnetic torque in layered antiferromagnetic Ca0.9Sr0.1Co2As2
- Authors
- 김종혁; 김미경; 정기원; 신현준; 홍재민; 김진석; Kyungsun Moon; Nara Lee; Young Jai Choi
- Issue Date
- Jul-2022
- Publisher
- NATURE PUBLISHING GROUP
- Keywords
- Magnetic torques; Spin-flip transition; Antiferromagnetic spintronics; Magnetocrystalline anisotropy; Layered antiferromagnet
- Citation
- SCIENTIFIC REPORTS, v.12, no.1, pp 12866-1 - 12866-9
- Journal Title
- SCIENTIFIC REPORTS
- Volume
- 12
- Number
- 1
- Start Page
- 12866-1
- End Page
- 12866-9
- URI
- https://yscholarhub.yonsei.ac.kr/handle/2021.sw.yonsei/6474
- DOI
- 10.1038/s41598-022-17206-y
- ISSN
- 2045-2322
- Abstract
- Spin-flip transition can occur in antiferromagnets with strong magnetocrystalline anisotropy, inducing a significant modification of the anisotropic magnetic properties through phase conversion. In contrast to ferromagnets, antiferromagnets have not been thoroughly examined in terms of their anisotropic characteristics. We investigated the magnetic-field and angle-dependent magnetic properties of Ising-type antiferromagnetic Ca0.9Sr0.1Co2As2 using magnetic torque measurements. An A-type antiferromagnetic order emerges below TN = 97 K aligned along the magnetically easy c-axis. The reversal of the angle-dependent torque across the spin-flip transition was observed, revealing the strong influence of the magnetocrystalline anisotropy on the magnetic properties. Based on the easy-axis anisotropic spin model, we theoretically generated torque data and identified specific spin configurations associated with the magnetic torque variation in the presence of a rotating magnetic field. Our results enrich fundamental and applied research on diverse antiferromagnetic compounds by shedding new light on the distinct magnetic features of the Ising-type antiferromagnet.
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Collections - College of Science > Physics > 1. Journal Articles
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