Abstract
Thin films of the perovskite and garnet structured gadolinium ferrites GdFeO3 and Gd3Fe5O12 have been synthesized by a sol–gel method, based on stoichiometric mixtures of acetyl acetone chelated Gd3+ and Fe3+ dissolved in 2-methoxy ethanol. After spin coating onto Si wafers, and heating in air at 700 °C for 20 h, neatly grown essentially single phase films were obtained. From X-ray photoelectron spectroscopy an iron deficiency is observed in the uppermost layer of both films, implying that the crystallites preferably end in planes rich in Gd and O but not in Fe. The films were also characterized by X-ray powder diffraction, scanning electron microscopy, infrared spectroscopy, and magnetic measurements.
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Acknowledgments
The authors wish to thank Andreas Gällström and Anne Henry at the Material Physics division at IFM, Linköping University, for their help with the FT-IR reflectance measurements. The present work is financed by the Swedish Foundation for Strategic Research (SSF) within the Nano-X programme (Grant No. SSF [A3 05:204]).
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Söderlind, F., Selegård, L., Nordblad, P. et al. Sol–gel synthesis and characterization of polycrystalline GdFeO3 and Gd3Fe5O12 thin films. J Sol-Gel Sci Technol 49, 253–259 (2009). https://doi.org/10.1007/s10971-008-1859-0
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DOI: https://doi.org/10.1007/s10971-008-1859-0