期刊
APPLIED PHYSICS LETTERS
卷 121, 期 9, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0099618
关键词
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资金
- Japan Society for the Promotion of Science (JSPS) [19H05816, 19H05823, 20H00337, 20H00349, 20H05665, 20K15161, 20K15162, 21H01810, 21H04562, 21J10136, 21K18145]
- Cooperative Research Project Program of the Research Institute of Electrical Communication, Tohoku University
- Collaborative Research Program of the Institute for Chemical Research, Kyoto University
In this study, the temperature dependence of the ferrimagnetic resonance and damping constant of Gd3Fe5O12 films were investigated. The results show that the damping constant is an order of magnitude smaller than those of other ferrimagnetic metals reported so far, highlighting the potential of Gd3Fe5O12 films in ultralow-power spintronic applications.
The magnetic damping constant is a proportionality constant for energy dissipation upon the precession of the magnetic moment, and it characterizes magnetization dynamics. In this study, ferrimagnetic Gd3Fe5O12 (111) epitaxial films are grown using pulsed laser deposition, and the temperature dependence of the ferrimagnetic resonance and damping constant (alpha(FiM)) is investigated. The results reveal that alpha(FiM) is approximately an order of magnitude smaller than those of other ferrimagnetic metals reported to date. Our results emphasize the potential of Gd3Fe5O12 films in ultralow-power spintronic applications.
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