Preparing polymer films doped with magnetic nanoparticles by spin-coating and melt-processing can induce an in-plane magnetic anisotropy

Jelle Wouters, Oleg I. Lebedev, Gustaaf Van Tendeloo, Hitoshi Yamada, Norio Sato, Johan Vanacken, Victor V. Moshchalkov, Thierry Verbiest, Ventsislav K. Valev

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Faraday rotation has been used to investigate a series of polymer films doped with magnetic iron oxide nanoparticles. The films have been prepared by spin-coating and melt-processing. In each case, upon varying the angle of optical incidence on the films, an in-plane magnetic anisotropy is observed. The effect of such an anisotropy on the Faraday rotation as a function of the angle of optical incidence is verified by comparison with magnetically poled films. These results demonstrate that care should be taken upon analyzing the magnetic behavior of such films on account of the sample preparation techniques themselves being able to affect the magnetization.

Original languageEnglish
Article number076105
JournalJournal of Applied Physics
Volume109
Issue number7
DOIs
Publication statusPublished - 1 Apr 2011

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