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Scandium-silicon Multilayer X-ray Mirrors with CrB2 Barrier LayersScSiCrB

Authors: Pershyn, Yuriy P.; Devizenko, A.Yu.; Zubarev, Evgeniy N.; Kondratenko, Valeriy V.; Voronov, Dmitriy L.; Gullikson, E. M.;

Scandium-silicon Multilayer X-ray Mirrors with CrB2 Barrier LayersScSiCrB

Abstract

Методами рентгенівської дифракції (0,154 нм), просвічувачої електронної мікроскопії поперечних зрізів і рефлектометрії в області екстремального ультрафіолету (41-51 нм) досліджені бар'єрні властивості шарів CrB2 товщиною 0.3-1.3 нм в багатошарових рентгенівських дзеркалах (БРД) Sc/CrB2/Si, виготовлених методом прямоточного магнетронного розпилення. Показано, що бар'єрні шари товщиною ~ 0,3 нм повністю розділяють шари Sc і Si і перешкоджають утворенню перемішаних зон ScSi. Більш тонкі шари діборида хрому взаємодіють з матричними шарами, формуючи шари з переважним вмістом ScB2 на кордонах Si-on-Sc і CrSi2 на кордонах Sc-on-Si. Показано, що БРД Sc/Si з бар'єрами на обох кордонах зберігають високу відбивну здатність на довжині хвилі ~ 47 нм. Methods of X-ray reflectometry (0.154 nm), cross-sectional transmission electron microscopy and reflectometry in the EUV region (41-51 nm) were used to investigate the barrier properties of CrB2 layers 0.3-1.3 nm thick in Sc/CrB2/Si multilayer X-ray mirrors (MXMs) deposited by DC magnetron sputtering. It is shown that barrier layers of ~ 0.3 nm separate Sc and Si layers completely and prevent interacting the Sc and Si layers. Thinner chromium diboride layers interact with the matrix layers forming interlayers containing mostly ScB2 on the Si-on-Sc interfaces and CrSi2 on the Sc-on-Si ones. Scandium-silicon MXMs with barrier layers on the both interfaces are shown to retain high reflectivity at the wavelength of ~ 47 nm.

Keywords

multilayer X-ray mirror, extreme ultraviolet, екстремальний ультрафіолет, відбивна здатність, barrier layer, бар'єрні шари, interlayer, reflectivity, multilayer x-ray mirror, перемішані зони, багатошарове рентгенівське дзеркало

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Green