Polymorphism of Ga-In alloys in nanoconfinement conditions

Латышева, Е. Н.; Pirozerskiĭ, A. L.; Charnaya, E. V.; Kumzerov, Yu. A.; Фокин, А. В.; Nedbai, A. I.; Бугаев, А. С.

doi:10.1134/s1063783415010187

Cited by 12 publications

(9 citation statements)

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“…The melting point broadening in nanosystems was also observed in [16], where it was explained by the variety of particle sizes in the sample. A similar effect for composite materials in which particles of In-Ga eutectic alloy have been embedded into the solid nanoporous matrix by the acoustic method, was observed in [23]. Further analysis of a number of works leads to the conclusion that the size effects which occur in composite materials, may differ to a large extent from those that are characteristic of free particles.…”

Section: Introductionmentioning

confidence: 62%

“…Further analysis of a number of works leads to the conclusion that the size effects which occur in composite materials, may differ to a large extent from those that are characteristic of free particles. For example, in [23,24] it is shown that the presence of a solid matrix may lead to the sta-bilization of the crystal modifications that are unstable in the bulk state. In Ref.…”

Section: Introductionmentioning

confidence: 99%

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Inner Size Effect in Layered Films with Eutectic Interaction of Components

et al. 2018

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The results of the study of melting of Bi-Sn and Pb-Sn polycrystalline layered film systems with the thickness of 200-400 nm on a substrate with temperature gradient are given. Multilayer (each layer is of 10-20 nm) and bilayer films (layers are of 100-200 nm) of the same total thickness have been investigated. Broadening of the melting range in all films and lowering of melting point in multilayer samples compared to the bilayer ones have been observed. The observed phenomena are discussed within existing thermodynamic concepts in consideration of interfacial energy of contacting layers of components and energy of grain boundaries in polycrystalline films.

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Section: Introductionmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Inner Size Effect in Layered Films with Eutectic Interaction of Components

et al. 2018

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“…The liquidus line was also shown to deform along with decreasing the melting temperature for the Au−Si nanoscale alloy [18]. Phase and symmetry changes were observed in the Ge−Sn and Ga−In confined nanoparticles [19,20].…”

Section: Introductionmentioning

confidence: 95%

Superconductivity and Phase Diagram in the Nanostructured Eutectic Ga-Ag Alloy

Smetanin

Likholetova

Charnaya

et al. 2022

Physics of the Solid State

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Here, we present a study of superconductivity in the Ga-Ag alloy embedded into porous template with pore diameter of 10 nm. The composition was close to the eutectic point in the gallium-rich range. We measured DC and AC magnetizations for temperatures from 1.8 to 10 K and magnetic fields up to 6 T. Three superconducting transitions were found at temperatures 7.05, 6.08, and 2.65 K in contrast to the bulk counterpart. Upper critical field lines were obtained. Activation barriers were evaluated from the AC data. The temperatures of the superconducting transitions were ascribed to emergence of β- and iota-Ga and of an intermetallic different from bulk Ag3Ga2. Keywords: nanostructured Ga-Ag eutectic alloy, superconducting transitions, segregated phases, DC and AC susceptibility.

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“…For gallium, which has several polymorphs in bulk, new crystalline modifications were observed and metastable crystalline phases were found to stabilize under nanoconfinement . Stabilization of metastable phases was also observed for frozen Ga–In eutectic alloys . While many other metals along with gallium can occur in different polymorph phases, it is unknown what happens with this polymorphism in confinement.…”

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confidence: 99%

“…8 Stabilization of metastable phases was also observed for frozen Ga−In eutectic alloys. 9 While many other metals along with gallium can occur in different polymorph phases, it is unknown what happens with this polymorphism in confinement.…”

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confidence: 99%