Effect of scattering angle on energy loss near-edge structure of h-BN

Yoon Soo Lee, Yasukazu Murakami, Daisuke Shindo, Tetsuo Oikawa

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Abstract

Angular dependence of the B-K edge in hexagonal BN (h-BN) has been quantitatively characterized using transmission electron microscopy (TEM) and electron energy-loss spectroscopy (EELS) in terms of the ratio of π* and σ* peaks. The dependence of the peak ratio on the scattering angle has been observed with two different values of the collection angle, 0.78 and 4.2 mrad. Under these conditions, the peak ratio of π*/σ* decreases with the increase of the scattering angle up to as much as the Bragg angle. As the angle approaches the fundamental reflection, the peak ratio re-increases, which may be attributable to the elastic scattering effect on the Bragg reflection. A change of the peak ratio in energy-loss spectra has been confirmed by the calculated peak ratio estimated by DV-Xα method.

Original languageEnglish
Pages (from-to)555-558
Number of pages4
JournalMaterials Transactions, JIM
Volume41
Issue number5
DOIs
Publication statusPublished - May 2000
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

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