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Here we provide the first unambiguous and direct evidence of unconventional magnetism in epitaxial, fully strained RuO\n                    <jats:sub>2<\/jats:sub>\n                    \/TiO\n                    <jats:sub>2<\/jats:sub>\n                    superlattices on a TiO\n                    <jats:sub>2<\/jats:sub>\n                    (110) substrate by using hybrid molecular beam epitaxy. Polarized neutron reflectometry reveals a finite magnetic moment localized within the compressively strained RuO\n                    <jats:sub>2<\/jats:sub>\n                    layers, consistent with predictions obtained from first\u2010principles calculations. Complementary density functional theory calculations and x\u2010ray photoemission spectroscopy measurements show that epitaxial strain drives the Ru 4\n                    <jats:italic>d<\/jats:italic>\n                    states toward the Fermi level, triggering a Stoner\u2010type instability that stabilizes uncompensated magnetic order. These unique results reveal that RuO\n                    <jats:sub>2<\/jats:sub>\n                    exhibits unconventional magnetic states under epitaxial strain, which are not accessible in bulk RuO\n                    <jats:sub>2<\/jats:sub>\n                    , and establish strain engineering as a powerful route to uncover and control magnetic phases in RuO\n                    <jats:sub>2<\/jats:sub>\n                    and related oxides.\n                  <\/jats:p>","DOI":"10.1002\/advs.77914","type":"journal-article","created":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T18:00:31Z","timestamp":1790532031000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Emergence of Unconventional Magnetic Order in Strain\u2010Engineered RuO\n                    <sub>2<\/sub>\n                    \/TiO\n                    <sub>2<\/sub>\n                    Superlattices"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2504-3571","authenticated-orcid":false,"given":"Seung Gyo","family":"Jeong","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering and Materials Science University of Minnesota\u2212Twin Cities  Minneapolis Minnesota USA"},{"name":"Now at Department of Physics Hankuk University of Foreign Studies  Yongin Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8197-1287","authenticated-orcid":false,"given":"Seungjun","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering University of Minnesota\u2212Twin Cities  Minneapolis Minnesota USA"},{"name":"Now at Department of Applied Physics Kyung Hee University  Yongin Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-1556-3272","authenticated-orcid":false,"given":"Jin Young","family":"Oh","sequence":"additional","affiliation":[{"name":"Department of Physics Sungkyunkwan University  Suwon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bonnie Y. 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