TY - JOUR

T1 - Effect of annealing on layer intermixing in nanoscale Cr/Ti multilayers depending on the period value

AU - Филатова, Елена Олеговна

AU - Каратаев, Андрей Владимирович

AU - Гайсин, Айдар Уралович

AU - Сахоненков, Сергей Сергеевич

AU - Полковников, Владимир Николаевич

AU - Чхало, Николай Иванович

PY - 2024/11/1

Y1 - 2024/11/1

N2 - The effect of annealing on the intermixing of thin Ti and Cr layers and their crystallinity in multilayer structures was studied using XPS, TEM, XRR and XRD methods. Multilayer structures with varios period values (sum thickness of the Ti and Cr layers) in the range from 1.4 nm to 4.3 nm were considered. The analysis revealed the formation of TiCrx at the interfaces of the layers. The contribution of the formed chromide relative to the base layers increases with decreasing period of the structure. The layers in the structure with thinnest period were found to be X-ray amorphous, while the structure with a thicker period exhibited the appearance of large crystallites of chromium and titanium. Annealing of the multilayer structures induced additional intermixing, leading to an increase in the extension of the chromide regions. Additionally, it resulted in a reduction of internal stresses within the structures. When the multilayer structures were annealed at a temperature of 700 °C, complete degradation occurred, with all layers intermixing with each other and with the Si substrate.

AB - The effect of annealing on the intermixing of thin Ti and Cr layers and their crystallinity in multilayer structures was studied using XPS, TEM, XRR and XRD methods. Multilayer structures with varios period values (sum thickness of the Ti and Cr layers) in the range from 1.4 nm to 4.3 nm were considered. The analysis revealed the formation of TiCrx at the interfaces of the layers. The contribution of the formed chromide relative to the base layers increases with decreasing period of the structure. The layers in the structure with thinnest period were found to be X-ray amorphous, while the structure with a thicker period exhibited the appearance of large crystallites of chromium and titanium. Annealing of the multilayer structures induced additional intermixing, leading to an increase in the extension of the chromide regions. Additionally, it resulted in a reduction of internal stresses within the structures. When the multilayer structures were annealed at a temperature of 700 °C, complete degradation occurred, with all layers intermixing with each other and with the Si substrate.

KW - Cr/Ti

KW - Intermixing

KW - Thermal stability

KW - XPS

KW - XRD

KW - multilayer X-ray mirror

KW - soft X-ray microscopy

UR - https://www.mendeley.com/catalogue/f0ec8fb3-2ee1-36ac-b5b8-d1a5c34a2f93/

U2 - 10.1016/j.apsusc.2024.160839

DO - 10.1016/j.apsusc.2024.160839

M3 - Article

VL - 672

JO - Applied Surface Science

JF - Applied Surface Science

SN - 0169-4332

M1 - 160839

ER -