Improved reverse Monte Carlo analysis of optical property of Fe and Ni from reflection electron energy loss spectroscopy spectra

被引：8
|
作者：
Li, Z. [1 ]
Gong, J. M. [1 ]
Da, B. [2 ]
Toth, J. [3 ]
Tokesi, K. [3 ]
Zeng, R. G. [4 ]
Ding, Z. J. [1 ,5 ]
机构：
[1] Univ Sci & Technol China, Dept Phys, Hefei, Anhui 230026, Peoples R China
[2] Natl Inst Mat Sci, Ctr Basic Res Mat, Tsukuba, Ibaraki 3050044, Japan
[3] Inst Nucl Res, POB 51, Debrecen, Hungary
[4] China Acad Engn Phys, Inst Mat, POB 9071, Jiangyou 621907, Sichuan, Peoples R China
[5] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
来源：
SCIENTIFIC REPORTS | 2023年 / 13卷 / 01期
关键词：
QUANTITATIVE-ANALYSIS; SELF-ENERGY; EXCITATION; SCATTERING; SURFACE; MODEL;
D O I：
10.1038/s41598-023-38769-4
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The energy loss functions (ELFs) of Fe and Ni have been derived from measured reflection electron energy loss spectroscopy (REELS) spectra by a reverse Monte Carlo analysis in our previous work. In this work, we present further improvements of ELFs for these metals. For Fe, we have updated ELFs at primary electron energies of 2 keV and 3 keV in a wider photon energy region (0-180 eV) with a better accuracy, which is verified by sum rules. Regarding to Ni, we supplement the ELF at primary energy of 5 keV and we also improve the data accuracy at 3 keV. Applying these new and more accurate ELFs we present the optical constants and dielectric functions for the two metals. The improvements were highlighted by comparing our present results with the previous data.
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页数：11
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