Crystal structures, phase transitions and physical properties of new double perovskites as advanced energy materials

• Applicant: Dr. Asmaa Zaraq
• Subject Area: Solid State and Surface Chemistry, Material Synthesis ; Mineralogy, Petrology and Geochemistry
• Term: from 2020 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 447570761

• Final Report Year: 2023

Final Report Abstract

The motivation behind the project was primarily an interest in the implementation of a project in an interesting field of research which is the physical chemistry of materials and energy. Thus, the proposal aimed to study double perovskites compounds for their use as advanced energy materials. The main objectives were, to synthesize and characterization of different families of double perovskite, to study their structural phase transitions and to search for the influence of the phase transition behavior on the physical properties. It aims to use them in new technologies as the hydrogen production and solid-state batteries technology, at low production cost and new environmental footprint.

Publications

• Crystallographic, vibrational, and optical properties of the ordered double perovskite series Sr2(Co1-xZnx)TeO6 with x =0, 0.5, 0.5, 0.75, and 1.17th European Powder Diffraction Conference – EPDIC17, May 31 - June 03, 2022, Šibenik, Croatia.
  Asmaa Zaraq & Thorsten M. Gesing
  
• Effect of iron substitution by nickel on crystal structures, optical, and magnetic properties in double perovskite series Sr2Fe1-xNixTeO6 with x = 0, 0.25, 050, 0.75, and 1. 30th Annual Meeting of the German Crystallographic Society, March 14th -17th 2022, München, Germany.
  Asmaa Zaraq, B. Orayech, J. M. Igartua, A. el Bouari, D. H. Gregory & Th. M. Gesing
  
• Effects of iron substitution and anti-site disorder on crystal structures, vibrational, optical and magnetic properties of double perovskites Sr2(Fe1−xNix)TeO6. Dalton Transactions, 51(45), 17368-17380.
  Zaraq, Asmaa; Gregory, Duncan H.; Orayech, Brahim; Igartua, Josu M.; El Bouari, Abdeslam; Eales, James D.; Bingham, Paul A. & Gesing, Thorsten M.
  
• Crystallography at non-ambient conditions and physical properties of the synthesized double perovskites, Sr2(Co1−xFex)TeO6. Dalton Transactions, 52(13), 4086-4102.
  Zaraq, Asmaa; Orayech, Brahim; Igartua, Josu M.; El Bouari, Abdeslam; Gregory, Duncan H. & Gesing, Thorsten M.