Complex permeability of Fe-deficient Ni–Cu–Zn ferrites

Abstract

1-x , where x = 0.00, 0.02, 0.04, 0.06 and 0.08 were prepared by the double sintering ceramic technique. Real part of the initial permeability µ', Curie temperature T c , imaginary part of the initial permeability µ", relative quality factor (Q-factor) of the samples were elaborately discussed as a function of frequency and temperature with increase of Fe-deficiency during the heating and cooling cycles.The temperature dependence of the imaginary part of the complex permeability curves are very interesting to note that there is a peak value of µ" at particular temperature which corresponds to the T c because at this temperature the samples might be in complete spin disorder. This reflects that at T c , a ferrimagnetically ordered state over comes K B T and becomes comparable with µ 0 H where the loss becomes maximum. Results of heating and cooling cycles were found to be very close to each other. The small difference during heating and cooling process might arise due to the thermal hysteresis which is accumulated in this work. In our study, it was noticed that the resonant frequency and T c increases first with the increase in iron deficiency and decreases after it takes a maximum at x = 0.06.

Complex Permeability and Dielectric Behaviors of Eu3+ Doped Ni-Zn Ferrites

“…The most popular combinations are Ni-Zn [3] Ni-Cu-Zn [4][5][6] Mg-Zn [7] and Mg-Cu-Zn [8,9] ferrites.…”

Magnetization dynamics of FeCuNbSiB soft magnetic ribbons and derived powder cores

“…One of the most widely used methods to get a comprehensive insight into the behaviour of magnetization mechanisms under the influence of AC magnetic field is the application of complex permeability formalism [1][2][3][4].…”

“…The complex permeability spectroscopy [2] is a very useful method for systematic study of AC magnetization behaviour of ferromagnets, which was used for a wide variety of traditional and modern materials, e.g. electric steels [1,5], magnetic wires [6][7][8], ferrites [3,[9][10][11][12], amorphous and nanocrystalline alloys [2,[13][14][15][16][17][18][19][20][21] with a lot of various compositions. Many efforts of scientists have been made to describe the different effects of the various thermal annealing treatment conditions [13][14][15], the changes in nominal compositions [16,17], neutron irradiation [20], surface corrosion [21] and many others on the magnetization mechanisms in soft magnetic alloys by using the complex permeability.…”

Study of the variation of resistivity, permeability and curie temperature of rare earth metal Yttrium (Y) substitution on Ni0.60Zn0.40−xYxFe2O4 (x=0.05, 0.10, 0.15) ferrites

“…The most well-liked combination are Ni-Zn [4], Ni-CuZn [5][6][7], Mg-Zn [8] and Mg-Cu-Zn [9] a ferrites. Ferrite crystallizes with two magnetic sub-lattices i.e.…”