TY - JOUR

T1 - Formation of intermetallic phases and texture evolution in Ni0.95Mo0.05/ Ti multilayer

AU - Конашук, Алексей Сергеевич

AU - Филатова, Елена Олеговна

AU - Гайсин, Айдар Уралович

AU - Каратаев, Андрей Владимирович

AU - Данилов, Денис Васильевич

AU - Сахоненков, Сергей Сергеевич

AU - Матвеев, Василий

PY - 2025/12/1

Y1 - 2025/12/1

N2 - This study presents a comprehensive investigation of the chemical and structural properties, particularly the texture, of glass/[Ni0.95Mo0.05/Ti]N multilayer systems with period thicknesses ranging from 4 to 20 nm. A combination of X-ray diffraction (XRD), X-ray reflectometry (XRR), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and X-ray photoelectron spectroscopy (XPS) was employed for the analysis. A gradual change in the preferred orientation of hexagonal α-Ti crystallites from (002) to (100) with increasing period thickness was revealed, which potentially explains the growth of layer waviness from the substrate to the surface with increase of period thickness. Crystallization of Ni0.95Mo0.05 in the form of solid solution was established. The formation of Ni1-xTix intermetallic compounds at the interfaces was shown, with an average stoichiometry of x ≈ 0.5. These presumably comprise a mixture of Ni-rich and Ti-rich intermetallics. As the period thickness increases, crystallization of the intermetallics in the form of mixture of Ni3Ti and Ti2Ni as well as refinement (fragmentation) of the grains of the intermetallic compounds was revealed. The results obtained provide insights into the problem of creating sharp interfaces in multilayered systems, which is essential for the development of high-efficient reflective elements for neutron optics as well as for X-ray microscopy in the spectral range of the “water window".

AB - This study presents a comprehensive investigation of the chemical and structural properties, particularly the texture, of glass/[Ni0.95Mo0.05/Ti]N multilayer systems with period thicknesses ranging from 4 to 20 nm. A combination of X-ray diffraction (XRD), X-ray reflectometry (XRR), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and X-ray photoelectron spectroscopy (XPS) was employed for the analysis. A gradual change in the preferred orientation of hexagonal α-Ti crystallites from (002) to (100) with increasing period thickness was revealed, which potentially explains the growth of layer waviness from the substrate to the surface with increase of period thickness. Crystallization of Ni0.95Mo0.05 in the form of solid solution was established. The formation of Ni1-xTix intermetallic compounds at the interfaces was shown, with an average stoichiometry of x ≈ 0.5. These presumably comprise a mixture of Ni-rich and Ti-rich intermetallics. As the period thickness increases, crystallization of the intermetallics in the form of mixture of Ni3Ti and Ti2Ni as well as refinement (fragmentation) of the grains of the intermetallic compounds was revealed. The results obtained provide insights into the problem of creating sharp interfaces in multilayered systems, which is essential for the development of high-efficient reflective elements for neutron optics as well as for X-ray microscopy in the spectral range of the “water window".

KW - Cumulative waviness

KW - Interfaces

KW - Layer texture

KW - Multilayer structure

KW - NiMo/Ti

KW - Solid solution

UR - https://www.mendeley.com/catalogue/2a853fc7-0751-3ae8-900c-245220128b49/

U2 - 10.1016/j.jpcs.2025.112927

DO - 10.1016/j.jpcs.2025.112927

M3 - Article

VL - 207

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

SN - 0022-3697

M1 - 112927-11

ER -