【摘要】 以硫酸盐为原料,NaOH为沉淀剂制备了Mn0.4Zn0.6Fe2O4纳米粒子,对其进行了X-射线衍射分析,证实其为尖晶石锰锌铁氧体;透射电镜观察其为近似球状。图像分析系统测算其平均粒径约50nm,并进行了居里温度测定和交变磁场下的体外升温、恒温试验,结果显示所制备材料的居里温度为105.407℃,其不同浓度的磁流体在高频交变磁场下可升温至43℃~47℃并保持不变。实验结果为筛选出适合肿瘤热疗的材料及相应的的质量浓度提供了理论及实验依据。更多还原

【Abstract】 With the sulfate as the materials and NaOH as precipitator, Mn 0.4 Zn 0.6 Fe₂O₄ nanoparticles were produced,which are proved to be spinel Mn-Zn ferrite analyzed by X-ray diffraction（XRD）. Their shapes are approximately global examined by transmission electron microscopy（TEM） and their average diameter is 50 nm measured with image analysis-system.The Curie temperature was measured and in vitro heating test in a alternating magnetic field was carried out.The results show that the Curie temperature is 105.407℃, While its magnetic fluid could rise to 43℃-47℃ due to different concentration in a alternating magnetic field. The result provide theoretical and practical evidence to select an appropriate material and concentration for tumor thermotherapy.更多还原