Tunable interplay of strain and magnetism in <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>Co</mi><mo>/</mo><msub><mi>MoS</mi><mn>2</mn></msub></mrow></math> heterostructures

Qoimatul Mustaghfiroh; Su Jin Kim; Ikhwan Nur Rahman; Anabil Gayen; Fathiya Rahmani; Min Choi; Yeon Suk Choi; Seung-Young Park; Chuyang Liu; Yujing Zhang; Hyun Seok Lee; Dong-Hyun Kim

doi:10.1103/wfxb-253q

Tunable interplay of strain and magnetism in $Co / {MoS}_{2}$ heterostructures

Qoimatul Mustaghfiroh ¹, Su Jin Kim¹, Ikhwan Nur Rahman ¹, Anabil Gayen ^1,2, Fathiya Rahmani¹, Min Choi¹, Yeon Suk Choi ³, Seung-Young Park³, Chuyang Liu⁴ et al.

Yujing Zhang ⁵, Hyun Seok Lee ^1,*, and Dong-Hyun Kim^1,2,6,†

¹Department of Physics, Chungbuk National University, Cheongju 28644, South Korea
²Synchrotron Radiation Science Convergence Institute, Chungbuk National University, Cheongju 28644, South Korea
³Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, South Korea
⁴College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China
⁵School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
⁶Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia

^*Contact author: hsl@chungbuk.ac.kr
^†Contact author: donghyun@chungbuk.ac.kr

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Phys. Rev. B 113, 054440 – Published 24 February, 2026

DOI: https://doi.org/10.1103/wfxb-253q

Abstract

We report our direct investigation on a built-in strain and its effect on magnetic properties in $Co / {MoS}_{2}$ heterostructure. With variation of Co thickness, tensile strain is built in monolayer ${MoS}_{2}$ ranging from 0.7% to 1.9%. Magneto-optical Kerr microscopy reveals distinct changes in microscopic magnetic domain patterns with corresponding hysteresis loop modification by the strain from the ${MoS}_{2}$ monolayer. Our work quantitatively demonstrates a correlation between magnetic properties and built-in strain, suggesting an interfacial built-in strain as an effective tool for controlling phonon and magnetic properties in a ferromagnet/two-dimensional bilayer system.

Physical Review B

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Tunable interplay of strain and magnetism in $Co / {MoS}_{2}$ heterostructures

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Tunable interplay of strain and magnetism in Co/MoS2 heterostructures

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Tunable interplay of strain and magnetism in $Co / {MoS}_{2}$ heterostructures