Magnetic properties of ZnFe2O4 nanoparticles

Abstract

Abstract:Fine particles of ZnFe 2 O 4 were synthesized by a wet chemical method in the (80 wt. % Fe 2 O 3 + 20 wt. % ZnO) system. The morphological and structural properties of the mixed system were investigated by scanning electron microscopy, X-ray diffraction, inductively coupled plasma atomic emission, and X-ray photoelectron spectroscopy. The major phase was determined to be the ZnFe 2 O 4 spinel with particle size of 11 nm. The magnetic properties of the material were investigated by ferromagnetic resonance (FMR) in the temperature range from liquid helium to room temperature. A very intense, asymmetric FMR signal from ZnFe 2 O 4 nanoparticles was recorded, which has been analyzed in terms of two Callen-lineshape lines.

Microstructural and magnetic characterization of Ni0.5Zn0.5Fe2O4 ferrite nanoparticles

“…Spinel ferrite nanoparticles (SF-NPs) adopting the general A 2+ Fe2 3+ O4 formula with A = Ni [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], Ni-Zn [1,2,8,, Mn [1,[60][61][62], Co [1,60,61,[63][64][65][66][67][68][69][70][71][72][73], Co-Zn [74][75][76][77][78][79], Ni-Cu [43], Zn [80][81][82][83][84][85], Mn-Zn…”

Magnetic studies of 0.7(Fe2O3)/0.3(ZnO) nanocomposites in nanopowder form and dispersed in polymer matrix

“…The 0.7(Fe 2 O 3 )/0.3(ZnO) nanocomposite has been already the subject of a few recent papers [2][3][4][5][6]. The mean crystallite size of ZnFe 2 O 4 was determined from Scherrer's formula and was equal to 12 nm.…”

Magnetic characterization of nanocrystalline iron samples with different size distributions

“…The observed FMR spectrum could be regarded as the sum of many individual lines originating from a collection of randomly oriented nanoparticles. As a very crude approximation we have tried to fit the FMR broad line with only a few simpler spectral lines that could be due to the assumed magnetic anisotropy of a nanoparticle or to a different phase present in the investigated sample [14]. In case of samples P1, P2, and P3, a satisfactory agreement with the experimental line has been achieved by its decomposition into only two components of Lorentzian line shape.…”