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Your search keyword '"Rasha Ghunaim"' showing total 2 results
Start Over Author "Rasha Ghunaim" Publisher beilstein-institut
2 results on '"Rasha Ghunaim"'

1. Single-crystalline FeCo nanoparticle-filled carbon nanotubes: synthesis, structural characterization and magnetic properties

Author

Rasha Ghunaim, Maik Scholz, Christine Damm, Bernd Rellinghaus, Rüdiger Klingeler, Bernd Büchner, Michael Mertig, and Silke Hampel

Subjects
carbon nanotubes, crystal structure, encapsulation, Fe–Co binary nanoparticles, magnetic nanoparticles, Technology, Chemical technology, TP1-1185, Science, Physics, QC1-999
Abstract

In the present work, we demonstrate different synthesis procedures for filling carbon nanotubes (CNTs) with equimolar binary nanoparticles of the type Fe–Co. The CNTs act as templates for the encapsulation of magnetic nanoparticles and provide a protective shield against oxidation as well as prevent nanoparticle agglomeration. By variation of the reaction parameters, we were able to tailor the sample purity, degree of filling, the composition and size of the filling particles, and therefore, the magnetic properties. The samples were analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), superconducting quantum interference device (SQUID) and thermogravimetric analysis (TGA). The Fe–Co-filled CNTs show significant enhancement in the coercive field as compared to the corresponding bulk material, which make them excellent candidates for several applications such as magnetic storage devices.

Published
2018
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2. Single-crystalline FeCo nanoparticle-filled carbon nanotubes: synthesis, structural characterization and magnetic properties

Author

Rüdiger Klingeler, Rasha Ghunaim, Bernd Rellinghaus, Bernd Büchner, Maik Scholz, Silke Hampel, Christine Damm, and Michael Mertig

Subjects
Thermogravimetric analysis, crystal structure, magnetic nanoparticles, Materials science, Scanning electron microscope, General Physics and Astronomy, Nanoparticle, 02 engineering and technology, Carbon nanotube, 010402 general chemistry, lcsh:Chemical technology, 01 natural sciences, lcsh:Technology, Full Research Paper, law.invention, law, Nanotechnology, General Materials Science, lcsh:TP1-1185, Electrical and Electronic Engineering, lcsh:Science, Fe–Co binary nanoparticles, carbon nanotubes, lcsh:T, Coercivity, 021001 nanoscience & nanotechnology, lcsh:QC1-999, 0104 chemical sciences, SQUID, Nanoscience, Chemical engineering, Transmission electron microscopy, Magnetic nanoparticles, encapsulation, lcsh:Q, 0210 nano-technology, lcsh:Physics
Abstract

In the present work, we demonstrate different synthesis procedures for filling carbon nanotubes (CNTs) with equimolar binary nanoparticles of the type Fe–Co. The CNTs act as templates for the encapsulation of magnetic nanoparticles and provide a protective shield against oxidation as well as prevent nanoparticle agglomeration. By variation of the reaction parameters, we were able to tailor the sample purity, degree of filling, the composition and size of the filling particles, and therefore, the magnetic properties. The samples were analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), superconducting quantum interference device (SQUID) and thermogravimetric analysis (TGA). The Fe–Co-filled CNTs show significant enhancement in the coercive field as compared to the corresponding bulk material, which make them excellent candidates for several applications such as magnetic storage devices.

Published
2018

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