Decoration of nitrogen vacancies by oxygen atoms in boron nitride nanotubes.
Decoration of nitrogen vacancies by oxygen atoms has been studied by near-edge X-ray absorption fine structure (NEXAFS) around B K-edge in several boron nitride (BN) structures, including bamboo-like and multi-walled BN nanotubes. Breaking of B-N bonds and formation of nitrogen vacancies under low-energy ion bombardment reduces oxidation resistance of BN structures and promotes an efficient oxygen-healing mechanism, in full agreement with some recent theoretical predictions. The formation of mixed O-B-N and B-O bonds is clearly identified by well-resolved peaks in NEXAFS spectra of excited boron atoms.
Department of Physics, University of Rijeka, 51000 Rijeka, Croatia. mpetravic@phy.uniri.hr
Mladen
M
Petravic
Robert
R
Peter
Ivna
I
Kavre
Lu Hua
LH
Li
Ying
Y
Chen
Liang-Jen
LJ
Fan
Yaw-Wen
YW
Yang