Revealing Spatial Distribution of Al-Coordinated Species in a Phase-Separated Aluminosilicate Glass by STEM-EELS
Kunyen Liao, Atsunobu Masuno, Ayako Taguchi, Hiroki Moriwake, Hiroyuki Inoue, Teruyasu Mizoguchi
Abstract
-edge at around 77 and 80 eV are attributed to 4-fold and 5,6-fold Al excitations, respectively. Mapping of the relative intensity ratio for two peaks in a phase-separated microstructure reveals a heterogeneous distribution of highly coordinated Al species in real space. The finding is in agreement with previous MD simulation that 5- and 6-fold Al species are favored to form in the Al-rich phase. This work has demonstrated that complex network structure within the phase-separated region can now be studied via STEM-EELS.
Topics & Concepts
Scanning transmission electron microscopyElectron energy loss spectroscopyAluminosilicatePhase (matter)SpectroscopyMaterials scienceTransmission electron microscopyChemical physicsAnalytical Chemistry (journal)Molecular physicsChemistryNanotechnologyPhysicsBiochemistryChromatographyCatalysisOrganic chemistryQuantum mechanicsGlass properties and applicationsX-ray Spectroscopy and Fluorescence AnalysisMaterial Dynamics and Properties