High Energy-Resolution Electron Energy-Loss Spectroscopy Study of the Dielectric Property of Hexagonal Diamond Nanoparticles

Abstract

Electronic structure of hexagonal diamond（h-DIA）was investigated by using high energyresolution electron energy-loss spectroscopy（EELS）based on transmission electron microscopy. The dielectric function of h-DIA was derived by Kramers-Kronig analysis of the EELS spectrum. Core electron excitation spectrum of h-DIA revealed density of states in conduction band,which was different distribution from that of cubic diamond. The electronic structure of h-DIA was experimentally revealed for the first time.