Superfine powders of nano-lithium ferrite doped with different kinds and amount of rare earth element were prepared by sol-gel method. Their photograph was taken by transmission electron microscopy. From it, we can se...Superfine powders of nano-lithium ferrite doped with different kinds and amount of rare earth element were prepared by sol-gel method. Their photograph was taken by transmission electron microscopy. From it, we can see most of particles are less than 100 nm and average diameter of superfine powders is 50 nm. Then their microwave absorption properties are measured by power ratio method. The result indicates that microwave absorption properties of nano-lithium ferrite doped with rare earth element change obviously. Different kinds and amount of rare earth element make different influences. Magnetic hysteresis loop is surveyed by vibrating sample magnetometer. We find that there are some relationships between magnetism and microwave absorption properties.展开更多
文摘Superfine powders of nano-lithium ferrite doped with different kinds and amount of rare earth element were prepared by sol-gel method. Their photograph was taken by transmission electron microscopy. From it, we can see most of particles are less than 100 nm and average diameter of superfine powders is 50 nm. Then their microwave absorption properties are measured by power ratio method. The result indicates that microwave absorption properties of nano-lithium ferrite doped with rare earth element change obviously. Different kinds and amount of rare earth element make different influences. Magnetic hysteresis loop is surveyed by vibrating sample magnetometer. We find that there are some relationships between magnetism and microwave absorption properties.
