Influence of Low-Energy Ion Bombardment on the Texture and Microstructure of Pt Films

R. V. Selyukov; Селюков Р. В.; V. V. Naumov; Наумов В. В.; M. O. Izyumov; Изюмов М. О.; S. V. Vasilev; Васильев С. В.; L. A. Mazaletskiy; Мазалецкий Л. А.

doi:10.31857/S1028096023020097

Influence of Low-Energy Ion Bombardment on the Texture and Microstructure of Pt Films

Authors: Selyukov R.V.¹, Naumov V.V.¹, Izyumov M.O.¹, Vasilev S.V.¹, Mazaletskiy L.A.²
Affiliations:
1. Valiev Institute of Physics and Technology RAS, Yaroslavl Branch
2. P.G. Demidov Yaroslavl State University
Issue: No 2 (2023)
Pages: 9-16
Section: Articles
URL: https://rjmseer.com/1028-0960/article/view/664605
DOI: https://doi.org/10.31857/S1028096023020097
EDN: https://elibrary.ru/DSNSPK
ID: 664605

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Abstract

The influence of low-energy ion bombardment on the texture and microstructure of an 80-nm-thick Pt film deposited at room temperature was investigated. The treatment was carried out in inductively coupled Ar plasma with a negative bias of 45–125 V applied to the specimens and an ion current density of 3.3 mA/cm². As a result of a series of treatments at each bias, the film was thinned; after each treatment, its structural parameters were determined using X-ray diffraction and compared with those of Pt films 20–60 nm thick deposited under the same conditions. Treatment at 75–125 V led to a decrease in the average size of coherent scattering regions by 10–25%; in the 45 V mode, such a decrease was not observed. These results were explained by the formation and accumulation of radiation defects, the rate of their generation was lower at bias of 45 V. Film sputtering in all modes did not worsen the sharpness of the film texture.

Keywords

thin films, platinum, magnetron sputtering, ion bombardment, inductively-coupled plasma, coherent scattering region, crystal texture, crystal phase, X-ray diffraction, rocking curve.

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