Quantitative study of ion bombardment induced phase transformation of cubic boron nitride by reflective electron energy-loss spectroscopy

2002 ◽  
Vol 20 (5) ◽  
pp. 1774-1778 ◽  
Author(s):  
Y. Y. Hui ◽  
K. W. Wong ◽  
W. M. Lau
Keyword(s):  
Phase Transformation ◽  
Boron Nitride ◽  
Energy Loss ◽  
Electron Energy ◽  
Quantitative Study ◽  
Electron Energy Loss Spectroscopy ◽  
Cubic Boron Nitride ◽  
Ion Bombardment ◽  
Electron Energy Loss

Formations of rhombohedral boron nitride, as revealed by TEM-electron energy loss spectroscopy

1981 ◽  
Vol 16 (4) ◽  
pp. 1114-1116 ◽  
Author(s):  
Y. Matsui ◽  
Y. Sekikawa ◽  
T. Sato ◽  
T. Ishii ◽  
S. Isakosawa ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Electron Energy Loss ◽  
Rhombohedral Boron

Optical Gap Measurements on Individual Boron Nitride Nanotubes by Electron Energy Loss Spectroscopy

2008 ◽  
Vol 14 (3) ◽  
pp. 274-282 ◽  
Author(s):  
Raul Arenal ◽  
Odile Stéphan ◽  
Mathieu Kociak ◽  
Dario Taverna ◽  
Annick Loiseau ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Hexagonal Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
Electromagnetic Response ◽  
Optical Gap ◽  
Spatially Resolved ◽  
Electron Energy Loss

AbstractElectromagnetic response of individual boron nitride nanotubes (BNNTs) has been studied by spatially resolved electron energy loss spectroscopy (EELS). We demonstrate how dedicated EELS methods using subnanometer electron probes permit the analysis of local dielectric properties of a material on a nanometer scale. The continuum dielectric model has been used to analyze the low-loss EEL spectra recorded from these tubes. Using this model, we demonstrate the weak influence of the out-of-plane contribution to the dielectric response of BNNTs. The optical gap, which can be deduced from the measurements, is found to be equal to 5.8 ± 0.2 eV, which is close to that of the hexagonal boron nitride. This value is found to be independent of the nanotubes configuration (diameter, helicity, number of walls, and interaction between the different walls).

Study of boron nitride by electron energy-loss spectroscopy

1982 ◽  
Vol 27 (3) ◽  
pp. 243-254 ◽  
Author(s):  
Jun Hosoi ◽  
Tetsuo Oikawa ◽  
Masao Inoue ◽  
Yoshio Matsui ◽  
Tadashi Endo
Keyword(s):  
Boron Nitride ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Electron Energy Loss

HIGH RESOLUTION ELECTRON ENERGY LOSS SPECTROSCOPY APPLIED TO A GRAPHITE SURFACE MODIFIED BY ION BOMBARDMENT

2000 ◽  
Vol 07 (04) ◽  
pp. 463-473 ◽  
Author(s):  
DENIS ROY ◽  
MARC PORTAIL ◽  
JEAN-MARC LAYET
Keyword(s):  
High Resolution ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Ion Bombardment ◽  
Low Energy ◽  
Graphite Surface ◽  
Inelastic Electron ◽  
Resolution Electron ◽  
Electron Energy Loss

This work presents the application of the technique known as high resolution electron energy loss spectroscopy (HREELS) to the study of a modern technological surface. First the physics of the interaction of low energy electrons with surfaces is briefly reviewed. The dielectric theory of inelastic electron scattering is outlined, with its application to surfaces and the excitation of phonons, polaritons and plasmons. Then a study of the modification of a graphite surface by Ar and H ion bombardment is presented, in relation with graphite surfaces modified by plasma wall interactions in fusion reactors. The observations of phonons and low energy plasmons are reported, with the C–H stretching vibrations as well following the H + bombardment. These observations are related to structural and chemical modifications induced by the ion bombardment.

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