Magnetic materials with a high self-biased ferromagnetic resonance (FMR) frequency and low electrical conductivity hold great potential for RF/microwave devices. In this work, ferrite film consisting of Fe3O4 (1.2 mu m)/photoresist (60 nm)/Fe3O4 (1.2 mu m) was deposited at 90 degrees C via spin spray deposition. Broadband impedance imaging with nanometer spatial resolution was recorded by using scanning microwave microscopy. Compared to a reference sample, it turned out that the grain boundary appeared to be more conductive than the grain.
Sun, N. X.,
& Zhuang, Y.
(2012). Excessive Grain Boundary Conductivity of Spin-Spray Deposited Ferrite/Non-Magnetic Multilayer. Journal of Applied Physics, 111 (7), 07A512.
Copyright © 2012, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in the Journal of Applied Physics 80.8, and may be found at http://jap.aip.org/resource/1/japiau/v111/i7/p07A512_s1.