Temperature-dependent magnetic damping of yttrium iron garnet spheres
Temperature-dependent magnetic damping of yttrium iron garnet spheres
We investigate the temperature dependent microwave absorption spectrum of an yttrium iron garnet sphere as a function of temperature (5 K to 300 K) and frequency (3 GHz to 43.5 GHz). At temperatures above 100 K, the magnetic resonance linewidth increases linearly with temperature and shows a Gilbert-like linear frequency …