Plasmon Spectroscopy of a Surface of the Transition Metal Films after Low-Energy Ion Action

Vasylyev, M. O.; Kolesnik, V.M.; Sidorenko, S. I.; Voloshko, S. М.; Yanchuk, Vitalii; Orlov, Anatolii

doi:10.15407/mfint.40.07.0919

Cited by 3 publications

(1 citation statement)

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“…Their content on the surface and in the near-surface layers can be controlled by various thermal, thermochemical and radiation treatments of the samples. Changes in the electronic state of the surface of refractory metals as a result of various types of processing can be studied by the method of plasmon spectroscopy (PS) [4][5][6]. Based on the determined excitation energies of plasmons (collective vibrations of conduction electrons), it is possible to calculate the concentration of conduction electrons, their work function, as well as the relative change of interplanar spaces depending on external influences on the state of the metal surface.…”

Section: Introductionmentioning

confidence: 99%

Effect of Deformation on the Electronic Properties of the W(110) Single Crystals Surface Before and After Different Types of Surface Treatment

Smolnik,

Makeieva,

Kolesnyk

et al. 2024

Metallofiz. Noveishie Tekhnol.

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The electronic states' changes on the surface of the W(110) single crystal strained due to plastic bending are studied by the method of plasmon spectroscopy after thermal, thermochemical and ion treatments in comparison with those of analogous unstrained tungsten single crystal. The relative changes of the interplanar spaces, the concentration of the conduction electrons involved in plasma oscillations, as well as work function for electrons are calculated based on the plasmons' energy shifts. As established, the macroscopic bending of the W(110) single crystal leads to a decrease in the work function from its convex surface, which undergoes tensile deformation. The maximal difference in the work functions for unstrained and strained single crystals is observed after all sequentially used thermal, thermochemical and ion treatments and is of 0.2 eV. The obtained results are important for the practical application of thermionic energy converters with nonplanar electrodes.

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Section: Introductionmentioning

confidence: 99%