O. Kalantaryan, S. Kononenko, E. Barannik, V. Zhurenko, V. Chishkala
{"title":"Influence of Prolonged Annealing on Properties of Y2O3 Nanosized Ceramics","authors":"O. Kalantaryan, S. Kononenko, E. Barannik, V. Zhurenko, V. Chishkala","doi":"10.1109/NAP51885.2021.9568608","DOIUrl":null,"url":null,"abstract":"The paper deals with the influence of sintering and annealing on the luminescence spectra of yttrium oxide nanosized ceramics. We pressed commercial yttrium oxide nanopowder to pellets with subsequent sintering at 1500 °C for 1 hour in air. Some samples were additionally annealed at 1000°C for 10 hours. XRD and SEM analysis of the ceramics pointed out that both types of the samples did not differ in crystal structure. A comparison of the luminescence spectra showed some differences in the first (maximum near 350 nm) and the third wavelength bands (maximum near 455 nm). The phonon energies increasing in the ground exciton state caused by stiffening of the lattice may be responsible for the annealing dependent properties at the first spectral band.","PeriodicalId":6735,"journal":{"name":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","volume":"73 1","pages":"1-4"},"PeriodicalIF":0.0000,"publicationDate":"2021-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NAP51885.2021.9568608","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The paper deals with the influence of sintering and annealing on the luminescence spectra of yttrium oxide nanosized ceramics. We pressed commercial yttrium oxide nanopowder to pellets with subsequent sintering at 1500 °C for 1 hour in air. Some samples were additionally annealed at 1000°C for 10 hours. XRD and SEM analysis of the ceramics pointed out that both types of the samples did not differ in crystal structure. A comparison of the luminescence spectra showed some differences in the first (maximum near 350 nm) and the third wavelength bands (maximum near 455 nm). The phonon energies increasing in the ground exciton state caused by stiffening of the lattice may be responsible for the annealing dependent properties at the first spectral band.
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