Magnetic and Electrical Properties of MnxCu1-xFe2O4 Ferrite

Abstract

In the present work, mixed manganese-copper ferrite of composition Mn x Cu 1-x Fe 2 O 4 (within x=0. 40, 0.42, 0.44, 0.46, 0.48 and 0.50) have been investigated for their electric and magnetic properties such as dc resistivity, Curie temperature, saturation magnetization. Mn x Cu 1-x Fe 2 O 4 ferrite samples were prepared by uniaxial pressing from the oxide mixture, synthesized at 1000°C during 45 hours and finally heated to 1200°C by 5h, at room atmosphere. The X-ray diffractograms show that the samples with different compositions were formed by compact structure spinel with cubic cell. The saturated magnetization of the Mn x Cu 1-x Fe 2 O 4 ferrites increased with x up to 0.46, which presented the smallest coercitive field. All samples showed hysteresis characteristic of soft magnetic materials. This electrical behavior is compatible with an insulator. The results were analyzed in the framework of grain/barrier model.

Al and PEG Effect on Structural and Physicochemical Properties of CoFe2O4

“…[18][19][20][21][22] Several researchers have reported on Ti, Y, Gd, Pr, Zn, Ni and Dy doped cobalt ferrite. [23][24][25][26][27][28] The present work is focused on the effects of Al 3+ doping on the structural, morphological and elastic properties of aluminium ion doped cobalt ferrite obtained via sol-gel method. The X-ray powder diffraction patterns, the microstructure and the elastic properties are discussed as a function of the Al 3+ doping.…”

Preparation and structural investigation of Polyethylene glycol (PEG) / nano-ferrite composites

“…34-0425) which have a single-phase cubic spinel crystal structure. The recorded peaks represent the (111), (220), (311), (400), (422), (511) and (440) planes characterizing the structure of ferrites according to published literature[17,18]. Here, we can state as a first conclusion that the used citrate precursor technique has been a successful method for preparing the nanoferrite samples.…”

“…All composite samples and the pure PEG sample have been characterized by FTIR spectroscopy and their magnetic properties have been explored by the VSM too. 220), (311), (400), ( 422), ( 511) and (440) planes characterizing the structure of ferrites according to published literature [17,18]. Here, we can state as a first conclusion that the used citrate precursor technique has been a successful method for preparing the nanoferrite samples.…”

Síntese, caracterização magnética e elétrica da ferrita de aluminato de cobre

“…Uma série de ferritas de CuAlXFe2-XO4, onde x = 0,0; 0,5; 1,0 e 1,5, foram produzidas via metalurgia do pó (Oliveira et al 2016) utilizando-se os óxidos de cobre, ferro e de alumínio de elevada de pureza (99,9%). Os pós nas estequiometrias definidas foram compactados uniaxialmente na forma de pastilhas ( = 8mm), utilizando uma pressão de 40 MPa.…”