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.
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Abstract
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Short-nanotubes, γ-Fe2O3, Magnetic properties |
| Subjects: | Material Science > Nanofabrication processes and tools Physical Science > Nanomagnetics Material Science > Nanostructured materials |
| ID Code: | 9535 |
| Deposited By: | SPI |
| Deposited On: | 21 Oct 2010 09:20 |
| Last Modified: | 21 Oct 2010 09:20 |
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