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The array pitch for all the samples was fixed at 620\u2009nm, while the dot diameter varied from 300\u2009nm to 550\u2009nm. Four-fold in-plane magnetic anisotropy (FFA) was detected in the samples using ferromagnetic resonance technique. It was found that the deposition of continuous film on top of the array drastically increases the FFA of the system, with a maximum anisotropy field of 120\u2009Oe being observed for the sample with intermediate diameter. This increase is due to the appearance of a field well in the film underneath the dots with a shape that is dependent on magnetic field orientation and to the coupling of magnetization oscillations in dots and film.<\/jats:p>","DOI":"10.1063\/1.4936994","type":"journal-article","created":{"date-parts":[[2015,12,9]],"date-time":"2015-12-09T14:31:01Z","timestamp":1449671461000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":19,"title":["Large four-fold magnetic anisotropy in two-dimensional modulated Ni80Fe20 films"],"prefix":"10.1063","volume":"107","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7081-581X","authenticated-orcid":false,"given":"G. 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