Electrical and optical properties of Neodymium ions doped P2O5-ZnO-Na2O-Li2O glasses

Electrical and optical properties of Neodymium ions doped P2O5-ZnO-Na2O-Li2O glasses


  • N.F.Osman Basic Science Department, Modern Academy for Engineering and Technology in Maadi, Cairo, Egypt
  • M.E. Sayed Modern Academy for Engineering and Technology https://orcid.org/0000-0002-4566-9926
  • Mohammad Elokr Physics Department, Facultyof Science, Al-Azhar University, Cairo
  • L.I.Soliman Solid state physics department, Physics Research Institute, National Research Centre, Dokki, Giza
  • Hamdia Zayed Physics Department, Faculty of Women, Ain Shams University, Cairo, Egypt


Sodium zinc lithium phosphate glasses doped with Nd3+ were prepared by the melt-quenching method. The optical, structural, and electrical properties of the glass samples were characterized by XRD, density, FTIR and UV-VIS analysis. XRD results revealed that all the samples are amorphous. DTA analysis showed that the transition temperatures of glasses increase with Nd2O3 content. FTIR studies revealed that the glasses consist of Q3, Q2, Q1 and Q0 structural units. The effect of annealing on the absorption coefficient spectra of the samples in the UV-VIS range were studied to evaluate the optical energy gap. The dc, ac electrical conductivity (σdc and σac),and dielectric constants (ε' and ε'') of all the samples have been investigated. Temperature dependence of σdc is found to obey Arrhenius law. With increasing Nd2O3 content σdc increase while the values of the activation energies ΔE1 and ΔE2 decrease. dc conductivity (σdc),and activation energies (ΔE1, ΔE2) were found to be affected by annealing. The ac conductivity follows the power law σac(ω) = Aωs, the exponent s has values between 0.875 and 0.991, consequently, the obtained results have been analyzed by (CBH) model. Conductivity mechanisms for grain resistance at room temperature were discussed using the Cole-Cole plot.

Author Biography

M.E. Sayed, Modern Academy for Engineering and Technology


Specialization: Solid State Physics
Awarded by: Faculty of Science, Ain Shams University, 2020.
Specialization: Applied Nuclear Physics
Awarded by: Faculty of Science, Ain Shams University, 2014.
Specialization: Special Physics
Awarded by: Faculty of Science, Ain Shams University, 2006.

Positions Occupied and work experience

1- Working as a lecturer of Math and Physics for two years at EL-Sherouk Academy.[2006-2008]
2- Working and still as teaching assistant of Physics and Mechanics at Modern Academy for Engineering and technology. [2008 - 2014]
3- Working and still as a teacher assistant of Physics and Mechanics at Modern Academy for Engineering and technology. [2014 - 2020]
Training Courses:
 Course title:
1- Chemical Separation of Uranium to be measured by Laser Flourimetry
2- Gamma-Ray Spectroscopy with NaI (Ti ( and Ge (Li) Detectors
3- Efficiency Calibration for low Background Gamma-Ray Spectrometers
4- Natural Radioactivity and Natural Radiation Sources
5- Dose Assessment
6- Scintillation Counter
Location: Atomic Energy Authority, National Center For Nuclear Safety And Radiation Control
Date: 20/9/2004
 ICDL Certificate 2008.
 TOEFL, 2009.
 Training of Trainer (TOT), 2014.
 Use of Technology in Education, 2015.
 Advanced Arduino and Raspberry PI Course, 2015.
 Egyptian Engineering Day, 2015.
 American society for mechanical engineering « Student Professional Development Conference », 2016.
 International publication course for scientific research, 2017.
 Introduction to Elsevier’s engineering solutions, 2020.


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