期刊
CERAMICS INTERNATIONAL
卷 47, 期 5, 页码 7218-7223出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.11.075
关键词
Nanocrystalline h-BN; Neutron irradiation; EPR studies
Paramagnetic centers in nanocrystalline boron nitride particles were studied before and after neutron irradiation, with more paramagnetic centers observed in the range of 0.3270-0.3370 T. The formation mechanism of VB and VN vacancies through neutron transmutations was examined in detail.
Paramagnetic centers in the nanocrystalline boron nitride (h-BN) particles were comparatively studied before and after neutron irradiation. Electron Paramagnetic Resonance (EPR) spectroscopic analyzes were performed in the broad range of magnetic field from 0.05 to 0.55 T (500-5500 Gauss). The range of 0.3270-0.3370 T was additionally sweeped, where more paramagnetic centers were observed. The nature of the new paramagnetic centers formed as a result of neutron transmutation in the BN nanoparticles were examined by EPR spectra. Formation mechanism of VB and VN vacancies has been studied in detail by neutron transmutations.
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