Title :
Microwave permeability measurement of unsaturated hexaferrites of Y-type
Author :
Obol, M. ; Vittoria, C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA
Abstract :
We have investigated the zero field permeability behavior of Y-type hexaferrites. The measured permeability from 0.045 to 10 GHz was theoretically explained in term of zero magnetic field multi-domain and domain wall resonance. The basal plane anisotropy field, H/sub /spl phi///sup A/, domain wall thickness /spl delta/ and length L of the domain wall were estimated from resonance and permeability data.
Keywords :
ferrites; magnetic domain walls; magnetic permeability measurement; microwave materials; microwave measurement; 0.045 to 10 GHz; Y-type hexaferrites; basal plane anisotropy field; domain wall resonance; domain wall thickness; microwave permeability measurement; multi-domain resonance; oriented polycrystalline slab; zero field permeability behavior; Frequency; Magnetic anisotropy; Magnetic domain walls; Magnetic field measurement; Magnetic materials; Magnetic resonance; Magnetization; Permeability measurement; Perpendicular magnetic anisotropy; Slabs;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210968
