Wu, W. and Xiao, X. H. and Zhang, S. F. and Peng, T. C. and Zhou, J. and Ren, F. and Jiang, C. Z. (2010) Synthesis and Magnetic Properties of Maghemite (γ-Fe2O3) Short-Nanotubes. Nanoscale Research Letters, 5 (9). pp. 1474-1479.
We report a rational synthesis of maghemite (γ-Fe2O3) short-nanotubes (SNTs) by a convenient hydrothermal method and subsequent annealing process. The structure, shape, and magnetic properties of the SNTs were investigated. Room-temperature and low-temperature magnetic measurements show that the as-fabricated γ-Fe2O3 SNTs are ferromagnetic, and its coercivity is nonzero when the temperature above blocking temperature (TB). The hysteresis loop was operated to show that the magnetic properties of γ-Fe2O3 SNTs are strongly influenced by the morphology of the crystal. The unique magnetic behaviors were interpreted by the competition of the demagnetization energy of quasi-one-dimensional nanostructures and the magnetocrystalline anisotropy energy of particles in SNTs.
|Uncontrolled Keywords:||Short-nanotubes, γ-Fe2O3, Magnetic properties|
|Subjects:||Material Science > Nanofabrication processes and tools|
Physical Science > Nanomagnetics
Material Science > Nanostructured materials
|Deposited On:||21 Oct 2010 09:20|
|Last Modified:||21 Oct 2010 09:20|
Repository Staff Only: item control page