Correlation between Structures and Physical Properties of Binary ZnO–P₂O₅ Glasses

Abstract

The structures and various corresponding physical parameters of non‐crystalline materials have attracted much attention owing to their wide diversity. Because solving the structure of glass is one of the most challenging issues in glass science, it is essential to combine several experimental and modeling techniques. Herein, the physical properties and structures at different length scales of binary zinc phosphate (ZP) glass are examined using different probes. The 3D structures constructed by reverse Monte Carlo modeling based on the datasets of 31P nuclear magnetic resonance, neutron and X‐ray diffraction, and Zn K‐edge X‐ray absorption fine structure indicate that the volume fraction and the connectivity of cavities in these ZP glasses vary significantly depending on the chemical composition. In addition, the compositional‐dependent modification of the network structure is examined through the diffraction peaks in X‐ray and neutron data, the boson peak of Raman scattering, and positron annihilation lifetime data. Furthermore, the correlations between structural parameters at different length scales are discussed using statistical principal component analysis. It is demonstrated that such numerical analysis based on the experimental results is important not only for simple oxide systems, but also for multicomponent glass systems.

Positron-induced Radiophotoluminescence in Ag-doped Glasses

“…(2)(3)(4) PAS can be used to evaluate both open and closed cavities in various types of material. (5)(6)(7)(8)(9)(10) Although positron annihilation measurement has conventionally been performed in quantum beam facilities or radiation-controlled areas, a commercial instrument that can be used in the laboratory has been developed to make general measurements possible. (11) PAS is sometimes considered a nondestructive measurement method.…”

Combinatorial characterization of metastable luminous silver cations

“…Reliable structures of amorphous materials can be described by reverse Monte Carlo (RMC) modelling based on a combination of experimental datasets, such as X-ray diffraction (XRD) and neutron diffraction, magic angle spinning nuclear magnetic resonance (MAS NMR), and extended XAFS (EXAFS) 32 – 34 . Because the raw data of Ag K-edge EXAFS is not suitable for fitting because of noise of signal due to the low concentration, back-Fourier transformed EXAFS data was used (Fig.…”

Densification in transparent SiO2 glasses prepared by spark plasma sintering

“…In addition, we emphasise that different probes are required for different scales of constituents in a solid-state matrix. For example, because the relationship between elastic (macroscopic) properties and spectroscopic (microscopic) approaches is not straightforward, a combination of analytical methods is necessary for complete characterisation 45 – 47 . A deeper understanding of the structure of the materials is required for more precise control of the properties.…”