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|Title:||Single crystalline nickel nanorods inside carbon nanotubes: Growth behavior, structure, and magnetic properties|
|Publisher:||AMER SCIENTIFIC PUBLISHERS|
|Citation:||JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 5(4), 596-600|
|Abstract:||Nickel nanorods with diameters ranging from 5 to 10 nm, encapsulated inside the carbon nanotubes, are prepared using microwave plasma chemical vapor deposition. High-resolution transmission electron microscopy (HRTEM) studies reveal the perfect crystalline nature of the rods with of-spacing closely matching the (1111) interplanar spacing of Ni. The (1111) planes of the Ni nanorods are always aligned at 39.6&DEG; with respect to the graphite planes of the nanotubes. The cosine component of the d-spacing along the direction of the graphite planes is found to be 1.6 &ANGS;; exactly half the d-spacing between the graphite planes. The electron diffraction pattern shows clear spots corresponding to Ni structure. The field cooled and zero field cooled magnetization data reveal the reversibility of the magnetization of the Ni nanorods and show a blocking temperature of 195 K, which correspond to energy barrier of 0.4 eV/(V).|
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