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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Nanocrystalline Ni
0.8
Zn
0.2
Fe
2
O
4
films prepared by spray deposition from polyol-mediated sol: Microstructural and magnetic characterization
Thin Solid Films, Volume 518, No. 10, Year 2010
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Description
Nanocrystalline films were directly prepared by spray deposition of a preformed polyol-based Ni0.8Zn0.2Fe2O4 sol on a moderately heated glass substrate. The microstructural and magnetic properties of these films are investigated by X-ray diffraction, scanning electron microscopy and magnetic measurements on a Super Quanducting Interference Devices magnetometer. They are compared with those of nanoparticles precipitated from the sol, and with those of film subsequently annealed in air at 400 °C. The films and the powder exhibit superparamagnetic behaviour with a blocking temperature which increases from the powder to the as-produced film to the annealed film, in agreement with increasing stress and/or crystal size. They are ferrimagnetic at low temperature with a hysteresis feature strongly dependent on the synthesis conditions. The stresses induced in the film upon deposition undoubtedly correlate with a large grain boundaries volume which contributes to the Hc, the coercitive field, increase and Msat, the saturation magnetization, decrease. © 2009 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Beji, Zyed
France, Paris
Interfaces Traitements Organisation et Dynamique Des Systèmes – Itodys
Tunisia, Tunis
University of Carthage
Smiri, Leila Samia
Tunisia, Tunis
University of Carthage
Vaulay, M. J.
France, Paris
Interfaces Traitements Organisation et Dynamique Des Systèmes – Itodys
Herbst, Fréd́eric
France, Paris
Interfaces Traitements Organisation et Dynamique Des Systèmes – Itodys
Ammar-Merah, Souad
France, Paris
Interfaces Traitements Organisation et Dynamique Des Systèmes – Itodys
Fiévet, F.
France, Paris
Interfaces Traitements Organisation et Dynamique Des Systèmes – Itodys
Statistics
Citations: 17
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1016/j.tsf.2009.07.188
Research Areas
Environmental
Study Approach
Qualitative