Magnetic aftereffects in Si-doped YIG

Author

Torres, Carlos ; Alejos, Oscar ; Hernández-Gómez, Pablo ; Muñoz, José María ; De Francisco, Carlos

Author_Institution

Dept. de Electr. y Electron., Valladolid Univ., Spain

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

3024

Lastpage

3026

Abstract

Magnetic aftereffect processes in yttrium iron garnet with silicon substitutions are analyzed by means of magnetic disaccommodation techniques. We have recorded the time evolution of the initial magnetic permeability after sample demagnetization for polycrystalline specimens with nominal composition Y₃Fe_5-xSi_xO₁₂ (0≤x≤1) in the temperature range from 80 K to 500 K. We have found that silicon substitutions give rise to new relaxation and frequency dependent accommodation processes at high and low temperatures, respectively. The origins of both types of processes are finally discussed.

Keywords

demagnetisation; garnets; magnetic aftereffect; magnetic domain walls; magnetic permeability; silicon; yttrium compounds; 80 to 500 K; Y₃Fe_5-xSi_xO₁₂; YFe5O12:Si; YFe5O12Si5O12; YIG:Si; YIGSi₅O₁₂; demagnetization; domain wall motion; frequency dependent accommodation processes; initial magnetic permeability time evolution; magnetic aftereffects; magnetic disaccommodation techniques; polycrystalline specimens; relaxation processes; Demagnetization; Frequency dependence; Garnets; Iron; Magnetic analysis; Permeability; Silicon; Temperature dependence; Temperature distribution; Yttrium;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802137

Filename

1042445