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This review systematically summarizes the synergistic strategies of SC CO\u2082, including defect engineering, chemical doping, lattice strain, and interface control, to effectively induce and enhance room\u2010temperature ferromagnetism (RT FM) in 2D materials. Research indicates that SC CO\u2082 treatment significantly enhances magnetic performance by breaking chemical bonds (e.g., introducing unpaired electrons in B\u2010doped graphene oxide with a saturation magnetization (Ms) of 1.71\u00a0emu\u00a0g\u207b\u00b9) or regulating oxygen vacancies (e.g., achieving Ms = 0.3492\u00a0emu\u00a0g\u207b\u00b9 in SrTiO\n                    <jats:sub>3<\/jats:sub>\n                    perovskite). Furthermore, SC CO\u2082 optimizes spin configurations via phase transitions (e.g., rhombohedral\u2010to\u2010cubic transformation in BiFeO\n                    <jats:sub>3<\/jats:sub>\n                    ) and lattice strain, thereby strengthening superexchange interactions. Despite breakthroughs in graphene derivatives, transition metal oxides (e.g., VO\u2082 nanosheets), and perovskite systems, challenges remain in understanding microscopic mechanisms, ensuring material stability, and enabling scalable production. Future efforts should integrate advanced characterization and computational modeling to unravel SC CO\u2082\u2010material interactions, advancing applications in spintronics and quantum devices.\n                  <\/jats:p>","DOI":"10.1002\/smll.202504839","type":"journal-article","created":{"date-parts":[[2025,6,16]],"date-time":"2025-06-16T10:12:19Z","timestamp":1750068739000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Supercritical CO\n                    <sub>2<\/sub>\n                    \u2010Regulation on 2D Magnetic Materials"],"prefix":"10.1002","volume":"21","author":[{"given":"Wei","family":"Lu","sequence":"first","affiliation":[{"name":"Henan Institute of Advanced Technology Zhengzhou University  Zhengzhou 450003 P. R. 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