Communication: Investigation of the electron momentum density distribution of nanodiamonds by electron energy-loss spectroscopy

被引：7

作者：

Feng, Zhenbao ^{[1
]}

Yang, Bing ^{[1
]}

Lin, Yangming ^{[1
]}

Su, Dangsheng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China

来源：

JOURNAL OF CHEMICAL PHYSICS | 2015年 / 143卷 / 21期

关键词：

COMPTON-SCATTERING; DETONATION NANODIAMOND; 1ST PRINCIPLE; IONIZATION; PROFILES; PROGRESS; SILICON;

D O I：

10.1063/1.4935886

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electron momentum distribution of detonation nanodiamonds (DND) was investigated by recording electron energy-loss spectra at large momentum transfer in the transmission electron microscope (TEM), which is known as electron Compton scattering from solid (ECOSS). Compton profile of diamond film obtained by ECOSS was found in good agreement with prior photon experimental measurement and theoretical calculation that for bulk diamond. Compared to the diamond film, the valence Compton profile of DND was found to be narrower, which indicates a more delocalization of the ground-state charge density for the latter. Combining with other TEM characterizations such as high-resolution transmission electron spectroscopy, diffraction, and energy dispersive X-ray spectroscopy measurements, ECOSS was shown to be a great potential technique to study ground-state electronic properties of nanomaterials. (C) 2015 AIP Publishing LLC.

引用

页数：5

共 40 条

[1] Ab initio calculation of the structure factors and Compton profiles of cubic silicon carbide [J].