Order within disorder

  title={Order within disorder},
  author={Philip Stephen Salmon},
  journal={Nature Materials},
  • P. Salmon
  • Published 1 October 2002
  • Materials Science
  • Nature Materials
The structure of glass is not as untidy as one would think. It has some degree of order intermediate between a liquid and a crystal. A new method allows control of this intermediate range order and improves our understanding of glass structures. 

Transformations in the medium-range order of fused silica under high pressure.

It is demonstrated that shock waves modify the medium-range order of this amorphous system, producing changes that are only clearly revealed by its ring size distribution.

Structure of glasses and melts

Wilding, M. C., Benmore, C. J. (2006). Structure and Glasses and Melts. reviews in Mineralogy and Geochemistry, 63 (1), 275-311 RAE2008

Topological versus chemical ordering in network glasses at intermediate and extended length scales

Investigating topological and chemical ordering in structurally disordered AX2 systems by applying the method of isotopic substitution in neutron diffraction to glassy ZnCl2 offers structural insight into those length scales that determine many important aspects of supercooled liquid and glass phenomenology.

The β-relaxation in metallic glasses

Focusing on metallic glasses as model systems, we review the features and mechanisms of the β-relaxations, which are intrinsic and universal to supercooled liquids and glasses, and demonstrate their

Identifying and characterising the different structural length scales in liquids and glasses: an experimental approach.

The structure of several network-forming liquids and glasses is considered, where a focus is placed on the detailed information made available by using the method of neutron diffraction with isotope substitution (NDIS) to measure the detailed structure of aerodynamically-levitated laser-heated droplets of "fragile" glass-forming liquid oxides and hydrogen-bonded network of water.

Impact of pressure on the structure of glass and its material properties

High pressures have a significant impact on the structure-related properties of glass, and are encountered in scenarios that range from fracture mechanics, where stress in the gigapascal regime is

Topological Model for the Viscosity of Multicomponent Glass-Forming Liquids

Topological constraint theory holds the key to understanding the temperature and composition dependence of the dynamics of glass-forming liquids. Unfortunately, existing analytical models currently

The Atomic-Scale Structure of Network Glass-Forming Materials

A prerequisite for understanding the physico-chemical properties of network glass-forming materials is knowledge about their atomic-scale structure. The desired information is not, however, easy to

Structural studies and polymorphism in amorphous solids and liquids at high pressure.

The background to polyamorphism is discussed, incorporating the experimental observations, simulation studies and the two-state models, and the potential occurrence of first-order transitions between supercooled liquids is identified as a critical-like phenomenon.

Decay of the pair correlations and small-angle scattering for binary liquids and glasses

The origin of extended-range ordering in binary liquids and glasses is investigated. The starting point is a simple model pair potential which includes both Coulomb and dispersion forces. For this



Medium-range structural order in covalent amorphous solids

Despite their lack of long-range translational and orientational order, covalent amorphous solids can exhibit structural order over both short and medium length scales, the latter reaching to 20 Å or

Defects in a disordered world: the structure of glassy GeSe2

The full set of partial structure factors for the prototypical network glass GeSe2 was measured using the method of isotopic substitution in neutron diffraction to measure the intrinsic chemical order of the glass.

Real space manifestation of the first sharp diffraction peak in the structure factor of liquid and glassy materials

  • P. Salmon
  • Materials Science
    Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences
  • 1994
The problem of those discernible features of the intermediate range order (IRO) which can be attributed to the first sharp diffraction peak (FSDP) observed in the structure factor of many liquid and

Random Packing of Structural Units and the First Sharp Diffraction Peak in Glasses

Diffraction studies of glasses often yield a structure factor S(Q) with a pronounced first sharp diffraction peak (FSDP) at low Q values in the vicinity of Q ≅ 1.0-1.5 A-1. This feature, while often

Metal Halide Analogues of Chalcogenides: A Building Block Approach to the Rational Synthesis of Solid-State Materials

Principles of solid-state structure and bonding that relate metal-halide and metal-chalcogenide materials are described through a comparison of binary AXn salts. Structural variation is rationalized

Designing intermediate-range order in amorphous materials

Using crystalline models, principles of crystal engineering are employed to design specific patterns of intermediate-range order within amorphous zinc-chloride networks to provide the structure/property relationships necessary to tailor specific optical, electronic and mechanical properties.