Anisotropy of hexagonal boron nitride core absorption spectra by xhyphen;ray Raman spectroscopy

摘要

B as well as N core excitation spectra of hexagonal boron nitride (hhyphen;BN) have been studied by means of xhyphen;ray Raman scattering (XRS) spectroscopy. Transitions from 1score to sgr;ast; and pgr;ast; states are completely distinguished by anisotropy measurements of XRS, thus making an unambiguous assignment to the symmetries of excited states and offering a sound basis to characterizehhyphen;BN with core absorption spectroscopy. copy;1996 American Institute of Physics.