{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:52:20Z","timestamp":1753872740521,"version":"3.41.2"},"reference-count":23,"publisher":"AIP Publishing","issue":"7","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2009,4,1]]},"abstract":"<jats:p>Longitudinal magneto-optical Kerr effect (MOKE) magnetometry and microscopy have been performed on a superferromagnetic (SFM) metal-insulator multilayer of [Co80Fe20(tn=1.3\u2002nm)\/Al2O3(3\u2002nm)]10 to understand the dynamic behavior of the SFM domains. Frequency dependent hysteresis loops measured by MOKE show that the coercive field Hc increases as the rate (frequency) of magnetization reversal is increased similar to dynamic hysteresis loops observed on conventional ferromagnetic ultrathin films. This dynamic hysteresis behavior arises due to SFM friction-controlled domain wall motion which is observed by MOKE microscopy. We see that the nucleation field for SFM domains increases for hysteresis loops with higher frequency as expected for a ferroic system.<\/jats:p>","DOI":"10.1063\/1.3070645","type":"journal-article","created":{"date-parts":[[2009,3,6]],"date-time":"2009-03-06T02:30:09Z","timestamp":1236306609000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":8,"title":["Dynamic magnetization properties of a superferromagnetic metal-insulator multilayer observed by magneto-optic Kerr microscopy"],"prefix":"10.1063","volume":"105","author":[{"given":"S.","family":"Bedanta","sequence":"first","affiliation":[{"name":"Universit\u00e4t Duisburg-Essen 1 Angewandte Physik, , Duisburg 47048, Germany"}]},{"given":"J.","family":"Rhensius","sequence":"additional","affiliation":[{"name":"Universit\u00e4t Duisburg-Essen 1 Angewandte Physik, , Duisburg 47048, Germany"},{"name":"Universit\u00e4t Konstanz 2 Fachbereich Physik, , Universit\u00e4tstrasse 10, Konstanz 78457, Germany"}]},{"given":"W.","family":"Kleemann","sequence":"additional","affiliation":[{"name":"Universit\u00e4t Duisburg-Essen 1 Angewandte Physik, , Duisburg 47048, Germany"}]},{"given":"P.","family":"Parashar","sequence":"additional","affiliation":[{"name":"Universit\u00e4t Duisburg-Essen 1 Angewandte Physik, , Duisburg 47048, Germany"},{"name":"Indian Institute of Technology 3 Department of Materials and Metallurgical Engineering, , Kanpur, India"}]},{"given":"S.","family":"Cardoso","sequence":"additional","affiliation":[{"name":"INESC 4 , Rua Alves Redol 9-1, Lisbon 1000, 208016 Portugal"}]},{"given":"P. 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