Microscopic properties of degradation-free capped GdN thin films studied by electron spin resonance
authors Shimokawa, T; Fukuoka, Y; Fujisawa, M; Zhang, WM; Okubo, S; Sakurai, T; Ohta, H; Vidyasagar, R; Yoshitomi, H; Kitayama, S; Kita, T
journal JOURNAL OF APPLIED PHYSICS
keywords MAGNETIC-PROPERTIES; MULTILAYERS; GDN1-XOX
abstract The microscopic magnetic properties of high-quality GdN thin films have been investigated by electron spin resonance (ESR) and ferromagnetic resonance (FMR) measurements. Detailed temperature dependence ESR measurements have shown the existence of two ferromagnetic components at lower temperatures, which was not clear from the previous magnetization measurements. The temperature, where the resonance shift occurs for the major ferromagnetic component, seems to be consistent with the Curie temperature obtained from the previous magnetization measurement. On the other hand, the divergence of line width is observed around 57K for the minor ferromagnetic component. The magnetic anisotropies of GdN thin films have been obtained by the analysis of FMR angular dependence observed at 4.2K. Combining the X-ray diffraction results, the correlation between the magnetic anisotropies and the lattice constants is discussed. (C) 2015 AIP Publishing LLC.
publisher AMER INST PHYSICS
issn 0021-8979
year published 2015
volume 117
issue 4
digital object identifier (doi) 10.1063/1.4906436
web of science category Physics, Applied
subject category Physics
unique article identifier WOS:000348998200020
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