{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,5]],"date-time":"2025-10-05T12:13:45Z","timestamp":1759666425789},"reference-count":13,"publisher":"AIP Publishing","issue":"10","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2003,5,15]]},"abstract":"<jats:p>We report magnetoresistance curves of CoFe nano-oxide specular spin valves of MnIr\/CoFe\/nano-oxidized CoFe\/CoFe\/Cu\/CoFe\/nano-oxidized CoFe\/Ta at different temperatures from 300 to 20 K. We extend the Stoner\u2013Wolfarth model of a common spin valve to a specular spin valve, introducing the separation of the pinned layer into two sublayers and their magnetic coupling across the nano-oxide. We study the effect of different coupling\/exchange (between the antiferromagnetic layer and the bottom sublayer) field ratios on the magnetization and magnetoresistance, corresponding with the experimentally observed anomalous bumps in low temperature magnetoresistance curves.<\/jats:p>","DOI":"10.1063\/1.1540149","type":"journal-article","created":{"date-parts":[[2003,5,15]],"date-time":"2003-05-15T23:33:55Z","timestamp":1053041635000},"page":"7690-7692","update-policy":"http:\/\/dx.doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":18,"title":["Anomalous magnetoresistance behavior of CoFe nano-oxide spin valves at low temperatures"],"prefix":"10.1063","volume":"93","author":[{"given":"J. O.","family":"Ventura","sequence":"first","affiliation":[{"name":"IFIMUP and Physics Department, FCUP, R. Campo Alegre, 687, Porto, 4169, Portugal"}]},{"given":"J. B.","family":"Sousa","sequence":"additional","affiliation":[{"name":"IFIMUP and Physics Department, FCUP, R. Campo Alegre, 687, Porto, 4169, Portugal"}]},{"given":"M. A.","family":"Salgueiro da Silva","sequence":"additional","affiliation":[{"name":"IFIMUP and Physics Department, FCUP, R. Campo Alegre, 687, Porto, 4169, Portugal"}]},{"given":"P. P.","family":"Freitas","sequence":"additional","affiliation":[{"name":"INESC, Solid State Technical Group, R. Alves Redol, 9-1, Lisbon, 1000, Portugal"}]},{"given":"A.","family":"Veloso","sequence":"additional","affiliation":[{"name":"INESC, Solid State Technical Group, R. Alves Redol, 9-1, Lisbon, 1000, Portugal"}]}],"member":"317","reference":[{"key":"2024021015145417600_r1","doi-asserted-by":"crossref","first-page":"1297","DOI":"10.1103\/PhysRevB.43.1297","volume":"43","year":"1991","journal-title":"Phys. Rev. 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