CAJ | 학술논문

采用溶胶-凝胶自燃法制备 Ni0.35Zn0.65Fe2O4粉末，研究引燃温度对燃烧产物性能的影响。用 X 射线衍射仪（XRD）和振动样品磁强计（VSM）对粉末的物相和磁性能进行了表征。结果表明，凝胶自燃后的粉体具有单一的尖晶石型 NiZn 铁氧体相，粉末颗粒尺寸约20nm，样品的比饱和磁化强度随自燃温度的升高而提高。引燃温度为400℃时比饱和磁化强度达70.2A·m2/kg，说明凝胶自燃法可直接制备出纳米铁氧体粉末。
채용용효-응효자연법제비 Ni0.35Zn0.65Fe2O4분말，연구인연온도대연소산물성능적영향。용 X 사선연사의（XRD）화진동양품자강계（VSM）대분말적물상화자성능진행료표정。결과표명，응효자연후적분체구유단일적첨정석형 NiZn 철양체상，분말과립척촌약20nm，양품적비포화자화강도수자연온도적승고이제고。인연온도위400℃시비포화자화강도체70.2A·m2/kg，설명응효자연법가직접제비출납미철양체분말。
Nickel-zinc ferrite Ni0.35Zn0.65Fe2O4 powders were synthesized by sol-gel auto-combustion synthesis. The effects of ignition temperature on the phase and magnetic properties of ferrite powders were investigated. The structure and magnetic properties were characterized by means of XRD and VSM. The results showed that the spinel nickel-zinc ferrite powders can be successfully prepared when gel were ignited, with mean particle size of approximately 20nm. The specific saturation magnetization of nickel-zinc ferrite sample increases with increasing gel ignition temperature. The specific saturation magnetization is up to 70.2 A·m2/kg for 400℃ ignited sample. Nickel-zinc ferrite powder can be prepared directly by sol-gel auto-combustion.