[G] Magnetic Materials

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)

[138] Broadband Microwave Absorption of a Co–GdO_x Superparamagnetic Alloy Film

○Hitoshi Saito¹, Ishu Saito¹, Ryota Abe¹, Bourai Chin¹, Toru Matsumura¹, Hiroshi Sonobe¹ (1. Akita Univ.)

Keywords:

superparamagnetic film,microwave absorption

Broadband microwave absorption of a superparamagnetic Co–GdO_x granular alloy thin film was evaluated using a waveguide and a vector network analyzer (VNA). Complex impedance trajectory analysis was used to evaluate the effective resistance of the sample and investigate its relationship with magnetic relaxation-induced microwave absorption.