Structural and magnetic properties of CuO nanoneedles synthesized by hydrothermal method

The copper oxide (CuO) nanoneedles were synthesized by a simple hydrothermal method. Field emission scanning electron microscopy revealed the formation of high-density CuO nanoneedles with ultrathin nanotip at low temperature. The X-ray diffraction (XRD) results showed that the CuO nanoneedles have...

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Bibliographic Details
Published in:Applied surface science 2008-09, Vol.254 (22), p.7477-7481
Main Authors: Dar, M.A., Kim, Y.S., Kim, W.B., Sohn, J.M., Shin, H.S.
Format: Article
Language:English
Subjects:
Clusters, nanoparticles, and nanocrystalline materials
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Copper oxide
Cross-disciplinary physics: materials science
rheology
Crystal growth
Exact sciences and technology
Field emission scanning electron microscopy
Hydrothermal method
Magnetic properties and materials
Magnetic properties of nanostructures
Materials science
Nanomaterials
Nanoscale materials and structures: fabrication and characterization
Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
Other topics in nanoscale materials and structures
Physics
Single-crystal and powder diffraction
Structure of solids and liquids
crystallography
X-ray diffraction and scattering
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Summary:The copper oxide (CuO) nanoneedles were synthesized by a simple hydrothermal method. Field emission scanning electron microscopy revealed the formation of high-density CuO nanoneedles with ultrathin nanotip at low temperature. The X-ray diffraction (XRD) results showed that the CuO nanoneedles have monoclinic structure with single crystalline phase. High-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction results also assisted the products single crystalline nature. The magnetic properties of CuO nanoneedles were studied using a superconductor quantum interference device (SQUID) magnetometer, and revealing a ferromagnetic behavior of the CuO nanoneedles. The coercivity of CuO nanoneedles at 3 K was estimated to be 42 Oe. These CuO nanoneedles may be implicated to various applications such as drug delivery, magnetic resonance imaging and field emission devices.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2008.06.004