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Photo-induced magnetism is controlled by the orientation of the film.

Sequential Assembly of Magnetic Prussian Blue Thin Films with Photo-Induced Magnetism. dark state. M. M. M. M. H D. H E // surface. S = 0. H E. Change in M ( ×10 -5 eumG). Photoinduced state. M. H E  surface. H E = 200 G < H D. M.  5. Magnetization (×10 -5 emuG).

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Photo-induced magnetism is controlled by the orientation of the film.

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  1. Sequential Assembly of Magnetic Prussian Blue Thin Films with Photo-Induced Magnetism dark state M M M M HD HE // surface S = 0 HE Change in M (×10-5 eumG) Photoinduced state M HE surface HE = 200 G < HD M 5 Magnetization (×10-5 emuG) Light on Time (min) HE = 5 kG > HD M Time (min) Ju-Hyun Park, Erik Čižmár, and Mark W. Meisel, Physics, University of Florida Photo-induced magnetism is controlled by the orientation of the film. Young D. Huh, Franz Frye, Sarah Lane, Daniel R. Talham, Chemistry, Univ. of Florida RbjCok[Fe(CN)6]l·nH2O The anisotropic photo-inducedmagnetization depends on the relative strength of dipolar field (HD) produced by primordial spins compared to the external magnetic field (HE). New thin-film magnets based on Prussian blue analogs were generated and discovered to possess unusual anisotropic photo-inducedmagnetism. Applied Physics Letters85 (2005) 3797-3799. Supported by NSF DMR-0305371, NSF DGE-0209410, and NSF DMR-0113714.

  2. Sequential Assembly of Magnetic Prussian Blue Thin Films with Photo-Induced Magnetism Ju-Hyun Park, Erik Čižmár, and Mark W. Meisel, Physics, University of Florida Young D. Huh, Franz Frye, Sarah Lane, Daniel R. Talham, Chemistry, Univ. of Florida Education This work was conducted as a close collaboration between physics and chemistry groups that are dedicated to the training of young researchers. Three graduate students (Park, Frye, and Lane) and two international scholars (Huh, South Korea, and Čižmár, Slovakia) played key roles in the research. Erik Čižmár’s participation was made possible by a NSF-NATO Postdoctoral Fellowship (DGE-0209410). The young researchers receive interdisciplinary training that includes expertise in SQUID magnetometry made possible by NSF DMR-0113714. Social Impact The combined physics/chemistry studies perform molecular-level manipulation leading to new solid-state structures. This “bottom-up” approach yielded a new nano-sized magnetic thin-film possessing unusual photo-induced magnetism. This exotic functionality is optically and orientationally controlled and provides an prototype for new magnetic devices. Applied Physics Letters85 (2005) 3797-3799. Supported by NSF DMR-0305371, NSF DGE-0209410, and NSF DMR-0113714.

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