1706.03340v1.pdf (1.33 MB)
Magnetization spin dynamics in a (LuBi)(3)Fe5O12 (BLIG) epitaxial film
conference contribution
posted on 2019-03-26, 09:32 authored by M. Malathi, Guru Venkat, A. Arora, I.I. Syvorotka, V. Sivasubramanian, A. PrabhakarBismuth substituted lutetium iron garnet (BLIG) films exhibit larger Faraday rotation, and have a higher Curie temperature than yttrium iron garnet. We have observed magnetic stripe domains and measured domain widths of 1.4 μm using Fourier domain polarization microscopy, Faraday rotation experiments yield a coercive field of 5 Oe. These characterizations form the basis of micromagnetic simulations that allow us to estimate and compare spin wave excitations in BLIG films. We observed that these films support thermal magnons with a precessional frequency of 7 GHz with a line width of 400 MHz. Further, we studied the dependence of precessional frequency on the externally applied magnetic field. Brillouin light scattering experiments and precession frequencies predicted by simulations show similar trend with increasing field.
Funding
We would like to thank the Dept. of Science and Technology, India for financial support under Sanction No. SB/S3/EECE/011/2014(IITM).
History
School
- Science
Department
- Physics
Published in
ICMAGMA 2018 JOURNAL OF MAGNETISM AND MAGNETIC MATERIALSVolume
448Pages
159 - 164Citation
MALATHI, M. ... et al, 2017. Magnetization spin dynamics in a (LuBi)(3)Fe5O12 (BLIG) epitaxial film. Journal of Magnetism and Magnetic Materials, 448, pp.159-164.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2017-06-03Publication date
2017Notes
This paper was published in the journal Journal of Magnetism and Magnetic Materials and the definitive published version is available at https://doi.org/10.1016/j.jmmm.2017.06.011. This paper was presented at the International Conference on Magnetic Materials and Applications – ICMAGMA2017.ISSN
0304-8853Publisher version
Language
- en