Synthesis of nanocrystalline Ba(CoxZn1-x)(2)Fe16O27 by sol-gel auto-combustion method
Data(s) |
2006
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Resumo |
The synthesis of nanocrystalline W-type hexaferrites Ba(CoxZn1-x)(2)Fe16O27 powders by sol-gel auto-combustion method has been investigated. The thermal decomposition process of dried gel was studied by thermogravimetry (TG), differential thermal analysis (DTA) and infrared spectra (IR). The structural and magnetic properties of resultant particles were investigated by X-ray diffraction (XRD), transmission electron microscope (TEM), and vibrating sample magnetometer (VSM). The results reveal that the dried gel exhibits auto-combustion behavior. After combustion, pure nanocrystalline W-type hexaferrite phase starts to appear at the calcination temperature of 800 degrees C. The crystallinity and the grain size increase at higher temperature. The saturation magnetization and coercivity clearly depend on calcination temperature and Co content X. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Yan SF;Liu LJ;Zhou EL.Synthesis of nanocrystalline Ba(CoxZn1-x)(2)Fe16O27 by sol-gel auto-combustion method,JOURNAL OF ALLOYS AND COMPOUNDS,2006,415(1-2):204-208 |
Palavras-Chave | #MAGNETIC-PROPERTIES #HEXAFERRITE POWDERS #FERRITE POWDERS #PERMEABILITY |
Tipo |
期刊论文 |