Journal ArticleDOI
Structural investigations of amorphous transition element films I. Scanning electron diffraction study of cobalt
P. K. Leung,J. G. Wright +1 more
Reads0
Chats0
TLDR
In this paper, thin films of cobalt, prepared in ultra high-vacuum at 4 K and examined in situ by scanning electron diffraction, are shown to be amorphous with a radial distribution function similar to that obtained theoretically by serial deposition of atoms in the computer-simulated model developed by Bennett.Abstract:
Thin films of cobalt, prepared in ultra-high-vacuum at 4 K and examined in situ by scanning electron diffraction, are shown to be amorphous with a radial distribution function similar to that obtained theoretically by serial deposition of atoms in the computer-simulated model developed by Bennett. The effects of removal of lossy electrons (by velocity filtering), subtraction of substrate background, and multiple scattering on the diffraction profile are investigated and discussed.read more
Citations
More filters
Journal ArticleDOI
Models of the glass transition
TL;DR: A general survey of glass transition phenomena and concepts is presented in an introductory section as discussed by the authors, and the physical significance of computer simulations of glass transitions in simple liquids and the question of a hidden phase transition underlying an observed glass transition are examined critically.
Journal ArticleDOI
Modelling the structures of amorphous metals and alloys
TL;DR: In this paper, the application of random packing models to amorphous metals and metal-metalloid alloys is discussed, with particular reference to the effects of soft potentials, boundary conditions, and density.
Journal ArticleDOI
Formation of monatomic metallic glasses through ultrafast liquid quenching
TL;DR: The ultrahigh cooling rate, approaching the highest liquid-quenching rate attainable in the experiment, makes it possible to explore the fast kinetics and structural behaviour of supercooled metallic liquids within the nanosecond to picosecond regimes.
Book ChapterDOI
Structure of Metallic Alloy Glasses
TL;DR: In this paper, the current status of research on structure of metallic glasses is reviewed in this chapter, which is largely limited to metallic glasses which can be retained at room temperature, but their metastability depends critically on impurity content.
Journal ArticleDOI
Noncrystalline structure of argon clusters. I. Polyicosahedral structure of ArN clusters, 20<N<50
TL;DR: In this paper, a comparison between theoretical and experimental diffraction functions leads to an estimate of the cluster temperature 27±3 K and of the proportion of monomers in the beam, and the similarity in the radial distribution functions of both PIC models and bulk amorphous materials, and give arguments for the stability of the clusters.
References
More filters
Journal ArticleDOI
Random packings and the structure of simple liquids. I. The geometry of random close packing
TL;DR: In this article, a set of polyhedral subunits essentially inverse to the packing in real space is derived, and several possible descriptive parameters are proposed to characterize an irregular array in formal mathematical terms.
Journal ArticleDOI
Serially Deposited Amorphous Aggregates of Hard Spheres
TL;DR: In this paper, a large aggregate of several thousand equal hard spheres was constructed by depositing additional spheres, one at a time, at surface sites on a small seed cluster, placing each new sphere in contact with three already present and not moving it afterward.
Journal ArticleDOI
Structural Investigation of Noncrystalline Nickel‐Phosphorus Alloys
TL;DR: The structure of noncrystalline electrodeposited Ni-P alloys, 73.8-81.4 at.% Ni, has been investigated by x-ray scattering and by physical density measurements as discussed by the authors.
Journal ArticleDOI
Theoretical calculation of dense random packings of equal and non-equal sized hard spheres applications to amorphous metallic alloys☆
TL;DR: In this article, a model describing the structure of amorphous metallic alloys is proposed using a packing of non-equal-sized hard spheres, and the radial distribution function and the interference function are calculated for each model and the variations of these curves with the number of spheres are studied.