Journal ArticleDOI
Superconductivity and spin fluctuations in M − Z r metallic glasses ( M = C u , N i , C o , a n d F e )
Z. Altounian,J. O. Strom-Olsen +1 more
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In this article, the superconducting transition temperature, upper critical field, and magnetic susceptibility have been measured in four binary metallic glass systems: Co-Zr, Co-CoZr and FeZr.Abstract:
The superconducting transition temperature, upper critical field, and magnetic susceptibility have been measured in four binary metallic glass systems: Cu-Zr, Ni-Zr, Co-Zr, and Fe-Zr For each alloy system, a full and continuous range of Zr-rich compositions accessible by melt spinning has been examined For Cu-Zr, the range is $075gxg030$; for Ni-Zr, $080gxg030$; for Co-Zr, $080gxg048$, and for Fe-Zr, $080gxg055$ ($x$ being the concentration of Zr in at%) The results show clearly the influence of spin fluctuations in reducing the superconducting transition temperature The data have been successfully analyzed using a modified form of the McMillan equation together with expressions for the Stoner enhanced magnetic susceptibility and the Ginsburg-Landau-Abrikosov-Gor'kov expression for the upper critical fieldread more
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Atomic-level structure and structure–property relationship in metallic glasses
Yongqiang Cheng,Evan Ma +1 more
TL;DR: In this article, the authors review the tremendous efforts over the past 50 years devoted to unraveling the atomic-level structure of MGs and the structural origin of their unique behaviors.
Journal ArticleDOI
Power-law scaling and fractal nature of medium-range order in metallic glasses.
TL;DR: A new packing scheme-self-similar packing of atomic clusters is proposed that has the characteristics of a fractal network with a dimension of 2.31, and is described by a power-law correlation function over the medium-range length scale.
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Matching glass-forming ability with the density of the amorphous phase.
TL;DR: In this paper, systematic deflection measurements using microcantilevers and a combinatorial deposition method show a correlation between glass-forming ability and the density change upon crystallization over a broad compositional range in the copper-zirconium binary system.
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Glass-forming range in mechanically alloyed Ni-Zr and the influence of the milling intensity
TL;DR: In this article, the effect of milling intensity on the glass formation has been studied for the first time, showing that deep eutectics do not play any role, contrary to amorphization by melt spinning.
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Formation of amorphous metals by mechanical alloying
TL;DR: In this paper, the glass-forming range of 3D transition metal powders with zirconium and titanium was determined in detail for Fe, Ni, and Co. The results lead to the conclusion that amorphization by mechanical alloying is based on a solid-state reaction and occurs under a metastable thermodynamic equilibrium neglecting the existence of intermetallic phases.