%0 Journal Article
%A Stadler, Daniel
%A Mueller, David N.
%A Brede, Thomas
%A Duchoň, Tomáš
%A Fischer, Thomas
%A Sarkar, Anirban
%A Giesen, Margret
%A Schneider, Claus M.
%A Volkert, Cynthia A.
%A Mathur, Sanjay
%T Magnetic Field-Assisted Chemical Vapor Deposition of Iron Oxide Thin Films: Influence of Field–Matter Interactions on Phase Composition and Morphology
%J The journal of physical chemistry letters
%V 10
%N 20
%@ 1948-7185
%C Washington, DC
%I ACS
%M FZJ-2019-05565
%P 6253 - 6259
%D 2019
%X Magnetic field-assisted CVD offers a direct pathway to manipulate the evolution of microstructure, phase composition, and magnetic properties of the as-prepared film. We report on the role of applied magnetic fields (0.5 T) during a cold-wall CVD deposition of iron oxide from [FeIII(OtBu)3]2 leading to higher crystallinity, larger particulates, and better out-of-plane magnetic anisotropy, if compared with zero-field depositions. Whereas selective formation of homogeneous magnetite films was observed for the field-assisted process, coexistence of hematite and amorphous iron(III) oxide was confirmed under zero-field conditions. Comparison of the coercive field (11 vs 60 mT) indicated lower defect concentration for the field-assisted process with nearly superparamagnetic behavior. X-ray photoemission electron microscopy (X-PEEM) in absorption mode at the O-K and Fe-L3,2 edges confirmed the selective formation of magnetite (field-assisted) and hematite (zero-field) with coexisting amorphous phases, respectively, emphasizing the importance of field–matter interactions in the phase-selective synthesis of magnetic thin films.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:31500420
%U <Go to ISI:>//WOS:000492425100040
%R 10.1021/acs.jpclett.9b02381
%U https://juser.fz-juelich.de/record/866412