1988/04/16 by M. Guyot, T. Merceron, V. Cagan +1
Engineering · Materials Science · #Magnetic Properties and Applications #Magnetic Properties and Synthesis of Ferrites #Magneto-Optical Properties and Applications
paper · doi:10.1002/pssa.2211060232
crossref issued 1988/04/16 · crossref published 1988/04/16 · crossref published-print 1988/04/16 · openalex publication_date 1988/04/16 · crossref created 2007/01/12 · crossref deposited 2021/07/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23 · crossref indexed 2026/07/30
The domain wall mobility of ferrimagnets is determined by using an original permeability spectrometer, which operates over a very broad frequency range (1 Hz to 1 GHz) from 77 to 600 K. Using such spectrometer permits to separate the diffusion relaxation and the domain wall relaxation. Three series of samples are investigated (YIG and Ni-Zn ferrites with various contents of diffusants and Gd-Y mixed garnets) in order to test the present theories of the domain wall damping: the diffusion damping theory and the spin damping theory. In fact, neither the diffusion damping nor the spin damping can account for the experimental mobility values.