The effects of synthesis conditions on the magnetic properties of zinc ferrite spinel nanoparticles

3rd Euro-Mediterranean Conference on Materials and Renewable Energies

材料科学;能源学

Maalam, K. El^1,2 ; Fkhar, L.^1,2,3 ; Mahhouti, Z.^1,2 ; Mounkachi, O.^1 ; Aitali, M.^3 ; Hamedoun, M.^1 ; Benyoussef, A.^1,2,4

Materials-Nanomaterials Center, MAScIR Foundation, B.P. 10100, Rabat, Morocco^1

Magnetism and Physics of the High Energies Laboratory, URAC 12, Faculty of Science, Mohammed v University, B.P. 1014, Rabat, Morocco^2

Coordination Chemistry Laboratory, Cadi Ayyad University, Faculty of Sciences Semlalia (UCA-FSSM), B.P. 2390, Marrakech, Maroc

40000, Morocco^3

Hassan II Academy of Science and Technology, Rabat, Morocco^4

关键词: Blocking temperature;    Characterization measurement;    Chemical coprecipitation method;    Crystalline structure;    Superparamagnetic behavior;    Synthesis conditions;    Zinc ferrite nanocrystals;    Zinc ferrite spinels;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/758/1/012008/pdf
DOI  :  10.1088/1742-6596/758/1/012008

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Zinc ferrite nanocrystals were synthesized from metal chloride precursors via chemical co-precipitation method, using different synthesis conditions. Characterization measurements including X-ray diffraction (XRD), transmission electron microscopy (TEM) and super conductiong quantum device (SQUID) were used to study the influence of precursor's concentration and reaction time on the crystalline structure, average sizes and magnetic properties of zinc ferrite nanoparticles. The transmission images show spherical, homogenous shape and particle size ranging from 16 to 22 nm. DC magnetization (2-300 K) measurements reveal a superparamagnetic behavior for the ZnFe2O4samples with a blocking temperature in the range of 18-24 K. Our results demonstrate that magnetic properties of magnetic particles can be largely modified by just changing the reaction condition such as concentration and reaction time, which might be a useful way to design novel magnetic materials.