article published yes Muhammad Nauman author 32c21954-2022-11eb-9d5f-af9f93c24e710000-0002-2111-4846 Tayyaba Hussain author Joonyoung Choi author Nara Lee author Young Jai Choi author Woun Kang author Younjung Jo author KiMo department Magnetic anisotropy in strontium iridate (Sr2IrO4) is essential because of its strong spin–orbit coupling and crystal field effect. In this paper, we present a detailed mapping of the out-of-plane (OOP) magnetic anisotropy in Sr2IrO4 for different sample orientations using torque magnetometry measurements in the low-magnetic-field region before the isospins are completely ordered. Dominant in-plane anisotropy was identified at low fields, confirming the b axis as an easy magnetization axis. Based on the fitting analysis of the strong uniaxial magnetic anisotropy, we observed that the main anisotropic effect arises from a spin–orbit-coupled magnetic exchange interaction affecting the OOP interaction. The effect of interlayer exchange interaction results in additional anisotropic terms owing to the tilting of the isospins. The results are relevant for understanding OOP magnetic anisotropy and provide a new way to analyze the effects of spin–orbit-coupling and interlayer magnetic exchange interactions. This study provides insight into the understanding of bulk magnetic, magnetotransport, and spintronic behavior on Sr2IrO4 for future studies. https://research-explorer.ista.ac.at/download/10735/10741/2022_JPhysCondensMatter_Nauman.pdf application/pdfno https://creativecommons.org/licenses/by/4.0/ IOP Publishing2022 eng 1361-648X 34986467 00077519180000110.1088/1361-648X/ac484d 3413 M. Nauman <i>et al.</i>, “Low-field magnetic anisotropy of Sr2IrO4,” <i>Journal of physics: Condensed matter</i>, vol. 34, no. 13. IOP Publishing, 2022. Nauman M, Hussain T, Choi J, et al. Low-field magnetic anisotropy of Sr2IrO4. <i>Journal of physics: Condensed matter</i>. 2022;34(13). doi:<a href="https://doi.org/10.1088/1361-648X/ac484d">10.1088/1361-648X/ac484d</a> Nauman, Muhammad, Tayyaba Hussain, Joonyoung Choi, Nara Lee, Young Jai Choi, Woun Kang, and Younjung Jo. “Low-Field Magnetic Anisotropy of Sr2IrO4.” <i>Journal of Physics: Condensed Matter</i>. IOP Publishing, 2022. <a href="https://doi.org/10.1088/1361-648X/ac484d">https://doi.org/10.1088/1361-648X/ac484d</a>. Nauman, M., Hussain, T., Choi, J., Lee, N., Choi, Y. J., Kang, W., &#38; Jo, Y. (2022). Low-field magnetic anisotropy of Sr2IrO4. <i>Journal of Physics: Condensed Matter</i>. IOP Publishing. <a href="https://doi.org/10.1088/1361-648X/ac484d">https://doi.org/10.1088/1361-648X/ac484d</a> M. Nauman, T. Hussain, J. Choi, N. Lee, Y.J. Choi, W. Kang, Y. Jo, Journal of Physics: Condensed Matter 34 (2022). Nauman M, Hussain T, Choi J, Lee N, Choi YJ, Kang W, Jo Y. 2022. Low-field magnetic anisotropy of Sr2IrO4. Journal of physics: Condensed matter. 34(13), 135802. Nauman, Muhammad, et al. “Low-Field Magnetic Anisotropy of Sr2IrO4.” <i>Journal of Physics: Condensed Matter</i>, vol. 34, no. 13, 135802, IOP Publishing, 2022, doi:<a href="https://doi.org/10.1088/1361-648X/ac484d">10.1088/1361-648X/ac484d</a>. 107352022-02-06T23:01:31Z2023-08-02T14:12:01Z