Title :
Ferromagnetic Resonance Study of
Thin Film
Author :
Lin, Jauyn Grace ; Song, Ming Yuan ; Lin, J.W. ; Samant, Mahesh G. ; Parkin, Stuart Stephen Papworth
Author_Institution :
Center for Condensed Matter Sci., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Ferromagnetic resonance (FMR) was used to study the magnetic properties of Fe3O4 films to characterize the Verwey transition. Epitaxial, smooth films were deposited by molecular beam epitaxy. FMR spectra were recorded using a 9.49 GHz Brucker EMX system from room temperature to 80 K with a magnetic field applied perpendicular to the film surface. A single resonance feature was observed above the Verwey transition temperature (Tv~ 105 K). However below Tv additional features were observed indicating the presence of complex magnetic interactions below Tv.
Keywords :
exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; iron compounds; magnetic epitaxial layers; metal-insulator transition; molecular beam epitaxial growth; Brucker EMX system; FMR spectra; Fe3O4; Verwey transition temperature; epitaxial thin film; ferromagnetic resonance; frequency 9.49 GHz; magnetic field; magnetic interactions; magnetic properties; molecular beam epitaxy; temperature 293 K to 80 K; Ions; Iron; Magnetic resonance; Magnetometers; Perpendicular magnetic anisotropy; Temperature dependence; ${hbox {Fe}}_{3}{hbox {O}}_{4}$ film; Charge ordering; Verwey transition; ferromagnetic resonance;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2243713