Experimental Investigations of Phase Equilibria in Ternary Ag-Cu-Ga System

Jendrzejczyk-Handzlik, Dominika; Handzlik, Piotr; Fitzner, K.

doi:10.1007/s11669-018-0697-1

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…The Ga-poor compositions demonstrated superconducting transitions below 120 mK [34]. The recent studies of the phase diagram for bulk Ga−Ag specified that two crystalline phases in the Ga-rich alloys are almost pure gallium with α-Ga structure and Ag 3 Ga 2 intermetallic with space symmetry Pmmm [35,36].…”

Section: Discussionmentioning

confidence: 99%

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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Section: Discussionmentioning

confidence: 99%

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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“…The gas atmosphere was pure argon of minimum mass fraction (99.9999 mass%) obtained from Air Products. DTA measurements were carried out on Ag-Au-Ga alloys along two cross-sections, with X Ag /X Ga = 1:1 and X Au /X Ga = 1:1, and in the temperature range from 473 K to 1300 K. The experimental procedure of DTA measurements is the same as in the case of Au-Ga system [28], Ag-In-Sb system [31], and Ag-Cu-Ga system [32]. The samples of the alloys were prepared from pieces of pure silver, gold, and gallium metals.…”

Section: Methodsmentioning

confidence: 99%

DTA measurements in the ternary Ag-Au-Ga system

Jendrzejczyk-Handzlik

Handzlik

2020

J min metall B Metall

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In this work, the ternary Ag-Au-Ga system was studied experimentally by differential thermal analysis (DTA). Measurements were carried out along two chosen cross-sections determined by the ratio of mole fractions XAg/XGa=1:1 and XAu/XGa=1:1 by applying Pegasus 404 apparatus form Netzsch. Experiments were performed at three rates: 1 K min-1, 5 K min-1 and 10 K min-1. Next, the obtained experimental results were used to estimate the temperatures of liquidus by applying extrapolation to zero rate. Moreover, the temperatures of invariant reactions and other phase transformations were investigated from DTA measurements which were carried out with the rate 1 K min-1. Finally, the experimental results were compared with the isopleths obtained from prediction and calculation of the phase diagram which were done by using CALPHAD method. Experimental data obtained in this work are in good agreement with the results of calculation.

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“…The low melting point (29.76 °C) and high boiling point (2403 °C) of Ga provide a wide temperature range for this unique metal to be used in liquid state. [5] With the wide use of lead-free solders in microelectronics packaging, the low melting point of Ga-based alloys and the possibility of forming intermetallic compounds [6,7] with other metals at low DOI: 10.1002/crat.202300230 temperatures make them a promising low-temperature bonding material in microelectronics. Some researchers have observed that the shear strength of joints welded with Ga-added solder can be significantly improved.…”

Section: Introductionmentioning

confidence: 99%

Structural, Electronic, and Mechanical Properties of Ag‐Cu‐Ga Intermetallic Compounds: First‐Principles Calculations

Xu,

Liu,

Zhou

2023

Cryst. Res. Technol.

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In this paper, the mechanical properties, electronic structures, and thermodynamic properties of Ag2Ga and CuGa2 under pressure are studied using the first‐principles method based on Density functional theory (DFT). With the increase in pressure, the equilibrium lattice constants (a/a0 and c/c0) and volume ratio (V/V0) of Ag2Ga and CuGa2 continuously decrease. The elastic constants show that Ag2Ga and CuGa2 are mechanically stable under pressures of 0–20 GPa, and the increase in pressure improves their deformation resistance. The results of Young's modulus (E) show that the hardness of CuGa2 is higher than that of Ag2Ga. The results of Cauchy pressure (C12 ‐ C44) and B/G ratio show that the plasticity of Ag2Ga and CuGa2 can be maintained with the increase in pressure. By analyzing the density of states (DOS), charge density difference (CDD), and population, the influence of pressure on electronic structure is studied. The calculated Debye temperature (θD) shows that the covalent bond of CuGa2 is stronger.

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Experimental Investigations of Phase Equilibria in Ternary Ag-Cu-Ga System

Cited by 6 publications

References 22 publications

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

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

DTA measurements in the ternary Ag-Au-Ga system

Structural, Electronic, and Mechanical Properties of Ag‐Cu‐Ga Intermetallic Compounds: First‐Principles Calculations

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