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V. VILCEANU1, M. FEDER2, L. BOUTIUC3, I. DUMITRU3, O. F. CALTUN3,*
In order to study the influence of the cations substitution on permeability of cobalt ferrites four series of samples with different chemical composition were prepared by conventional ceramic method. The calcined powders and sintered samples were characterized by X-ray diffraction and vibrating samples magnetometer. The microstructure of the samples was analyzed by surface electron microscopy. The initial permeability spectra at room temperature were plotted using the torus standard method. Chemical composition and the microstructure influence the magnetic properties and the initial permeability spectra of the cobalt ferrites samples. Small amount of manganese ions decreases the Curie temperature, increase the initial permeability and saturation magnetization and decreases the coercive magnetic field, thus improving the performances of cobalt ferrites for magnetostrictive sensors applications.
Cobalt ferrites, Cation distribution magnetic properties, Initial permeability.
V. VILCEANU, M. FEDER, L. BOUTIUC, I. DUMITRU, O. F. CALTUN, The influence of chemical composition on initial permeability frequency spectra of cobalt ferrites, Optoelectronics and Advanced Materials - Rapid Communications, 4, 6, June 2010, pp.808-811 (2010).
Submitted at: Jan. 27, 2010
Accepted at: June 16, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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