Single Crystalline Magnetite Nanotubes
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- 作者：Zuqin Liu ; Daihua Zhang ; Song Han ; Chao Li ; Bo Lei ; Weigang Lu ; Jiye Fang ; and Chongwu Zhou
- 刊名：Journal of the American Chemical Society
- 出版年：2005
- 出版时间：January 12, 2005
- 年：2005
- 卷：127
- 期：1
- 页码：6 - 7
- 全文大小：182K
- 年卷期：v.127,no.1(January 12, 2005)
- ISSN：1520-5126
文摘
We descried a method to synthesize single crystalline Fe3O4 nanotubes by wet-etching the MgO inner cores of MgO/Fe3O4 core-shell nanowires. Homogeneous Fe3O4 nanotubes with controllable length, diameter, and wall thickness have been obtained. Resistivity of the Fe3O4 nanotubes was estimated to be ~4 × 10-2 
cm at room temperature. Magnetoresistance of ~1% was observed at T = 77 K when a magnetic field of B = 0.7 T was applied. The synthetic strategy presented here may be extended to a variety of materials such as YBCO, PZT, and LCMO which should provide ideal candidates for fundamental studies of superconductivity, piezoelectricity, and ferromagnetism in nanoscale structures.
cm at room temperature. Magnetoresistance of ~1% was observed at T = 77 K when a magnetic field of B = 0.7 T was applied. The synthetic strategy presented here may be extended to a variety of materials such as YBCO, PZT, and LCMO which should provide ideal candidates for fundamental studies of superconductivity, piezoelectricity, and ferromagnetism in nanoscale structures.