Recently, a novel method for synthesizing ferromagnetic γ-Fe2O3 nanotubes by a template process with the aid of high magnetic field was reported by the key laboratory of superconductivity in IEE. This work which was supported by the National Science Foundation of China (NSFC) and the “Bairen” program of CAS was published inChemistry of Materials(Chem. Mater., 2008, 20, 20), which suggests that new progress in magnetic field processing is made.
It is found that the well crystalline γ-Fe2O3 nanotubes, ranging from ~300 nm in diameter and up to ~30 µm in length, exhibit room-temperature typical ferromagnetic behavior. Such a novel approach to preparing magnetic nanotubes with the advantages of a simple, yet very efficient, and contact-free method may be very usefulfor technological applications. After applying the patent, the detailed results about this work was published in Chemistry of Materials.
Materials synthesis or processing in high magnetic field is a new and useful method for creating new types of materials. Espcially, with recent development of cryogen-free superconducting magnets, people are paying more and more attention to the “control of materils” for material science by means of a magnetic field. Thus, American National High Magnetic Field Laboratory called this “Science, Engineering & Technology of the 21th Century”.