Journal Article

PUBDB-2026-03142

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Record-high radioluminescence of glass-ceramics produced in a pure ZnO-Al$_2$O$_3$-SiO$_2$ (ZAS) system

Volf, J. ; Vařák, P. ; Jarý, V.Extern* ; Babin, V.Extern* ; Allix, M. ; Pitcher, M. ; Mrázek, J. ; Michalcová, A. ; Nekvindová, P. (Corresponding author)

2026
Ceramurgia Faenza

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Please use a persistent id in citations: doi:10.1016/j.ceramint.2026.07.432

Abstract: The photo- and radioluminescence investigation of glasses and (glass-)ceramics prepared in the ZnO-Al2O3-SiO2 (ZAS) system are presented. The ZnO content was systematically varied over a wide range from 28 to 60 mol. %. The glass and (glass-)ceramics samples were prepared by traditional melt-quenching method. The chemical, phase composition and microstructure of the samples were determined by XRF, XRD and TEM. These methods confirmed the crystallization of single-phase rhombohedral α-Zn2SiO4 when the system contains more than 50 mol% ZnO and less than 10 mol% Al2O3. Furthermore, it was found that when samples contain more than 50 mol % SiO2, glass-glass phase separation was evident. The formation of these phases corresponded very well with photoluminescence measurements, where samples containing willemite exhibited very strong characteristic photoluminescence with a maximum at 380 nm (Ex. = 250 nm), while samples containing amorphous SiO2 particles showed much weaker emission intensity with a broad peak at 486 nm (Ex. = 250 nm). Radioluminescence spectra as well luminescence kinetics were measured, revealing record-high radioluminescence intensities in the glass-ceramic samples. This radioluminescence at 380 nm (Ex. = 40 kV, X-ray) reaches up to 1680% of the emission intensity of the standard Bi4Ge3O12 scintillator. At the same time, the measured scintillation decay time can be characterized by the fastest component below 1 ns. These results bring novel information about the stability and scintillating properties of the nanocrystals formed in ZAS glass-ceramic system. The prepared materials can be used for construction of scintillators with improved sensing properties with high application potential in the field of high-energy physics and visualization screens in medicine.

Note: ISSN 0272-8842 not unique: **2 hits**. Waiting for fulltext

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20230310 EC (I-20230310-EC) (I-20230310-EC)
3. FS-Proposal: I-20231298 EC (I-20231298-EC) (I-20231298-EC)

Experiment(s):

1. PETRA Beamline P66 (PETRA III)

Appears in the scientific report 2026

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Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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