Egyptian Journal of Chemistry 63 (2020): 3655–3668. doi:10.21608/ejchem.2020.27059.2578 info:cnr-pdr/source/autori:M.M. Ismail, H. Farouk, Lidia Zur, Alessandro Chiasera, Maurizio Ferrari, Anna Lukowiak, A.Ashery, M. A. Salem and I.K.Battisha 1National Research Centre, Solid State Physics Department, Physics Research Division,33 El Behooth St., Dokki, Giza, Egypt, (Affiliation ID: 60014618). 2 Al AZHAR University, Physics Department, Faculty of Science, Cairo, Egypt. 3IFN-CNR CSMFO Lab. and FBK Photonics Unit, Povo, Trento, Italy. 4Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi", Piazza del Viminale 1, 00184, Roma, Italy. 5Institute of Low Temperature and Structure Research, PAS, Okolna, 2, 50-422, Wroclaw, Poland./titolo:Optical and Structural Properties of Er3+ Ions Doped Al-Na-K-Ba Phosphate Glasses/doi:10.21608%2Fejchem.2020.27059.2578/rivista:Egyptian Journal of Chemistry/anno:2020/pagina_da:3655/pagina_a:3668/intervallo_pagine:3655–3668/volume:63