{"_id":"20453","file":[{"access_level":"open_access","date_created":"2025-10-13T06:34:15Z","file_size":1709516,"success":1,"checksum":"b182856a5a655496e149afa49ec464f3","date_updated":"2025-10-13T06:34:15Z","relation":"main_file","file_id":"20458","file_name":"2025_JourPhysicsCondMatter_Farooq.pdf","content_type":"application/pdf","creator":"dernst"}],"year":"2025","publication_identifier":{"issn":["0953-8984"],"eissn":["1361-648X"]},"department":[{"_id":"KiMo"}],"article_processing_charge":"Yes (via OA deal)","abstract":[{"lang":"eng","text":"Magnetotropic susceptibility is the thermodynamic coefficient that maps the curvature of free energy with respect to an applied magnetic field orientation, providing a means to quantify the magnetic anisotropy of a crystal. In this context, non-linear magnetic torque behavior has been reported in FePS3, motivating the investigation of similar non-linear characteristics in its magnetotropic susceptibility. In this work, we derive the non-linear magnetotropic susceptibility expressions for FePS3 in both ac*-and bc*-planes using complementary approaches: by taking the first derivative of torque and through the formal calculation of the magnetotropic susceptibility. Higher-order terms in the magnetization are included, and the final equations are obtained by applying symmetry constraints imposed by the C2h point group of the material. We analyze the behavior of the resulting non-linear expressions and identify the contributions of each parameter. Our theoretical results show good agreement with preliminary, unpublished experimental data, offering meaningful guidance for ongoing and future experimental work."}],"publication":"Journal of Physics Condensed Matter","oa_version":"Published Version","external_id":{"pmid":["40967257"]},"intvolume":"        37","ddc":["530"],"month":"10","issue":"40","language":[{"iso":"eng"}],"citation":{"ieee":"H. Farooq and M. Nauman, “Non-linear magnetotropic susceptibility in FePS3,” <i>Journal of Physics Condensed Matter</i>, vol. 37, no. 40. IOP Publishing, 2025.","apa":"Farooq, H., &#38; Nauman, M. (2025). Non-linear magnetotropic susceptibility in FePS3. <i>Journal of Physics Condensed Matter</i>. IOP Publishing. <a href=\"https://doi.org/10.1088/1361-648X/ae0913\">https://doi.org/10.1088/1361-648X/ae0913</a>","chicago":"Farooq, Hamza, and Muhammad Nauman. “Non-Linear Magnetotropic Susceptibility in FePS3.” <i>Journal of Physics Condensed Matter</i>. IOP Publishing, 2025. <a href=\"https://doi.org/10.1088/1361-648X/ae0913\">https://doi.org/10.1088/1361-648X/ae0913</a>.","mla":"Farooq, Hamza, and Muhammad Nauman. “Non-Linear Magnetotropic Susceptibility in FePS3.” <i>Journal of Physics Condensed Matter</i>, vol. 37, no. 40, 405801, IOP Publishing, 2025, doi:<a href=\"https://doi.org/10.1088/1361-648X/ae0913\">10.1088/1361-648X/ae0913</a>.","short":"H. Farooq, M. Nauman, Journal of Physics Condensed Matter 37 (2025).","ama":"Farooq H, Nauman M. Non-linear magnetotropic susceptibility in FePS3. <i>Journal of Physics Condensed Matter</i>. 2025;37(40). doi:<a href=\"https://doi.org/10.1088/1361-648X/ae0913\">10.1088/1361-648X/ae0913</a>","ista":"Farooq H, Nauman M. 2025. Non-linear magnetotropic susceptibility in FePS3. Journal of Physics Condensed Matter. 37(40), 405801."},"PlanS_conform":"1","file_date_updated":"2025-10-13T06:34:15Z","pmid":1,"oa":1,"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"status":"public","title":"Non-linear magnetotropic susceptibility in FePS3","OA_type":"hybrid","has_accepted_license":"1","corr_author":"1","type":"journal_article","scopus_import":"1","quality_controlled":"1","acknowledgement":"We thank Kimberly A. Modic for her support and discussions regarding the technique in the context of a project indirectly related to, but distinct from, the present work. We also thank Brad J. Ramshaw and Arkady Shekhter for scientific discussions not directly related to this study, but whose insights proved helpful. We are grateful to Valeska Zambra, Amit Nathwani, Hamza Nasir, and Tayyaba Hussain for informal discussions on various aspects of the technique, and to Naoya Iwahara for his thoughtful and constructive feedback. The experimental curve shown in figures 3(b) and 6, from the Thermodynamics of Quantum Materials (TQM) group at ISTA, was measured by Muhammad Nauman for an unrelated project. We thank Kimberly Modic for granting access to the laboratory facilities. Je Geun Park provided the crystal used for that measurement via Younjung Jo, whose contribution we gratefully acknowledge. Institutional support from the Institute of Science and Technology Austria (ISTA) is also gratefully acknowledged.","article_type":"original","date_published":"2025-10-06T00:00:00Z","date_created":"2025-10-12T22:01:26Z","publisher":"IOP Publishing","doi":"10.1088/1361-648X/ae0913","publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"06","OA_place":"publisher","volume":37,"author":[{"last_name":"Farooq","first_name":"Hamza","full_name":"Farooq, Hamza"},{"id":"32c21954-2022-11eb-9d5f-af9f93c24e71","full_name":"Nauman, Muhammad","first_name":"Muhammad","orcid":"0000-0002-2111-4846","last_name":"Nauman"}],"article_number":"405801","date_updated":"2025-10-13T06:44:15Z"}