Optical Properties of Terbium, Gadolinium, and Samarium Extracted from Reflection Electron Energy Loss Spectroscopy Spectra
The frequency-dependent energy loss function and the related optical constants [refractive index n(ω) and extinction coefficient k(ω)] and dielectric functions [ε1(ω) and ε2(ω)] for three rare earth metals, i.e., terbium (Tb), gadolinium (Gd), and samarium (Sm), were derived in a wide range of energy loss up to around 200 eV from reflection electron energy loss spectroscopy (REELS) spectra. The latest reverse Monte Carlo analysis method was employed to subtract ELFs from REELS spectra, based on physical modeling of the electron transport in the surface region of a sample. The high accuracy of the subtracted ELFs was verified by applying the Thomas-Ritchie-Kuhn and the perfect-screening sum rules.
Authors
- Attila Sulyok (ORCID: https://orcid.org/0000-0001-9467-365X)
- Bo Da (ORCID: https://orcid.org/0000-0002-0785-8662)
- K. Tőkési (ORCID: https://orcid.org/0000-0001-8772-8472)
- Rongguang Zeng (ORCID: https://orcid.org/0009-0005-1153-0634)
- X. H. Zhou (ORCID: https://orcid.org/0009-0002-7087-2421)
- M. Menyhárd (ORCID: https://orcid.org/0000-0003-4581-5337)
- Zejun Ding (ORCID: https://orcid.org/0000-0001-5767-1145)
- Y. Harada (ORCID: https://orcid.org/0000-0001-9380-2106)
- Ziyuan Li (ORCID: https://orcid.org/0000-0001-9400-6902)
- Jianmin Gong (ORCID: https://orcid.org/0009-0002-4394-8822)
Institutions
- University of Science and Technology of China (CN)
- HUN-REN Institute for Nuclear Research (HU)
- National Institute for Materials Science (JP)
- China Academy of Engineering Physics (CN)
- Instituto de Ciencia de Materiales de Sevilla (ES)
- Hefei National Center for Physical Sciences at Nanoscale (CN)
- Microscale (United States) (US)
- HUN-REN Centre for Energy Research (HU)
Publication Details
- Journal
- The Journal of Physical Chemistry C
- Published
- 2025-03-19
- DOI
- https://doi.org/10.1021/acs.jpcc.5c00770
- Citations
- 1
- Primary Topic
- Electron and X-Ray Spectroscopy Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.66
Funders
- European Cooperation in Science and Technology
- Iketani Science and Technology Foundation
- Hitachi Global Foundation
- Japan Society for the Promotion of Science
- Science and Technology on Surface Physics and Chemistry Laboratory