{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T16:39:11Z","timestamp":1774456751457,"version":"3.50.1"},"reference-count":20,"publisher":"AIP Publishing","issue":"11","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2007,11,1]]},"abstract":"<jats:p>Magnetostatic, magnetoresonance (FMR), and magnetotransport measurements are performed in the temperature range 100\u2013360K in the granular ferromagnetic film Co0.59(Al2On)0.41 possessing isotropic (independent of the angle between the direction of the current and magnetization in the plane) positive magnetoresistance in magnetic fields \u00b1500Oe are performed. It is established that this anomaly of the magnetoresistance is due to short-range order effects in the ordering imposed on the magnetic moments of granules in the absence of an external magnetic field by their dipole\u2013dipole interaction. It is established that the blocking temperature of thermally activated re-orientations of the magnetic moments of the granules differs substantially with respect to the measurement time and the methods used for this investigation. It is about 200K for magnetization measurements and exceeds 470K for FMR and measurements of the magnetoresistance. It is shown that ferromagnetic resonance in the present system changes from the regime \u201cindependent resonance of individual clusters\u201d to the regime \u201ccollective resonance of a system of magnetic granules in a film\u201d when the direction of the magnetic field changes from in-plane to normal to the film.<\/jats:p>","DOI":"10.1063\/1.2747075","type":"journal-article","created":{"date-parts":[[2007,12,21]],"date-time":"2007-12-21T23:42:16Z","timestamp":1198280536000},"page":"974-986","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":10,"title":["Investigations of the magnetic properties of the granular system Co0.6(Al2On)0.4 possessing isotropic positive magnetoresistance"],"prefix":"10.1063","volume":"33","author":[{"given":"A. A.","family":"Timofeev","sequence":"first","affiliation":[{"name":"Institute of Physics of the National Academy of Sciences of Ukraine , pr. Nauki 46, Kiev 03028, Ukraine"}]},{"given":"S. M.","family":"Ryabchenko","sequence":"additional","affiliation":[{"name":"Institute of Physics of the National Academy of Sciences of Ukraine , pr. Nauki 46, Kiev 03028, Ukraine"}]},{"given":"A. F.","family":"Lozenko","sequence":"additional","affiliation":[{"name":"Institute of Physics of the National Academy of Sciences of Ukraine , pr. Nauki 46, Kiev 03028, Ukraine"}]},{"given":"P. A.","family":"Trotsenko","sequence":"additional","affiliation":[{"name":"Institute of Physics of the National Academy of Sciences of Ukraine , pr. Nauki 46, Kiev 03028, Ukraine"}]},{"given":"O. V.","family":"Stogne\u012d","sequence":"additional","affiliation":[{"name":"Voronezh State Technical University , Moskovski\u012d Prospekt 14, Voronezh 394026, Russia"}]},{"given":"A. V.","family":"Sitnikov","sequence":"additional","affiliation":[{"name":"Voronezh State Technical University , Moskovski\u012d Prospekt 14, Voronezh 394026, Russia"}]},{"given":"S. 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