Title :
Magnetic properties of high frequency Ni-Zn ferrites doped with CuO
Author :
Caltun, Ovidiu F. ; Spinu, Leonard ; Stancu, Alexandru
Author_Institution :
Fac. of Phys., Al. I. Cuza Univ., Iasi, Romania
fDate :
7/1/2001 12:00:00 AM
Abstract :
Cu substituted Ni-Zn ferrites, with different copper content, were prepared by a conventional ceramic technique. Structural and magnetic properties of the ferrites were characterized by X-ray diffraction, scanning electron microscopy, frequency dependent power loss, and high frequency (106-109 Hz) permeability measurements. These studies revealed that the magnetic performances increase considerably with the optimum concentration of the additions. The contribution of two magnetization mechanisms, domain wall motion and magnetization rotation, on the high frequency complex permeability, is also discussed
Keywords :
ceramics; copper compounds; crystal structure; ferrites; high-frequency effects; magnetic domain walls; magnetic leakage; magnetic permeability; magnetisation; materials preparation; nickel compounds; scanning electron microscopy; zinc compounds; 1E6 to 1E9 Hz; Cu substituted Ni-Zn ferrites; CuO; NiZnFe2O4:CuO; X-ray diffraction; ceramic technique; copper content; domain wall motion; frequency dependent power loss; high frequency Ni-Zn ferrites; high frequency complex permeability; high frequency permeability; magnetic properties; magnetization mechanisms; magnetization rotation; scanning electron microscopy; structural properties; Ceramics; Copper; Electrons; Ferrites; Frequency; Magnetic domain walls; Magnetic force microscopy; Magnetic properties; Magnetization; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
