New Gd3+ and Mn2+-Co-Doped Scheelite-Type Ceramics-Their Structural, Optical and Magnetic Properties
Hubert Fuks1, Paweł Kochmański2, Elżbieta Tomaszewicz3
1Department of Technical Physics, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, Al. Piastów 19, 70-310 Szczecin, Poland.
International Journal of Molecular Sciences
|December 23, 2022
Summary
New ceramic materials, calcium molybdato-tungstates co-doped with Gadolinium (Gd3+) and Manganese (Mn2+) ions, were synthesized. These materials exhibit a scheelite-type structure and show significant antiferromagnetic interactions.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Inorganic Chemistry
Background:
- Calcium molybdato-tungstates are versatile ceramic materials with potential applications.
- Doping with magnetic ions like Gd3+ and Mn2+ can introduce unique magnetic and optical properties.
Purpose of the Study:
- To synthesize and characterize novel Gd3+- and Mn2+-co-doped calcium molybdato-tungstates.
- To investigate the structural, morphological, optical, and magnetic properties of these new materials.
Main Methods:
- High-temperature solid-state reaction and combustion synthesis routes were employed.
- Scanning Electron Microscopy (SEM) was used for morphological analysis.
- UV-vis spectroscopy and Electron Paramagnetic Resonance (EPR) were utilized for optical and magnetic characterization.
Main Results:
- Ceramic materials with the formula Ca1−3x−yMny▯xGd2x(MoO4)1−3x(WO4)3x were successfully synthesized.
- The materials crystallize in a scheelite-type structure (space group I41/a).
- EPR studies confirmed the presence of Gd3+ and Mn2+ ions and revealed significant antiferromagnetic (AFM) interactions.
Conclusions:
- The successful synthesis of Gd3+- and Mn2+-co-doped calcium molybdato-tungstates was achieved.
- The materials possess a well-defined crystal structure and tunable magnetic properties due to AFM interactions.
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