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Updated: May 31, 2026

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
Published on: December 29, 2016
Fundamental state quantities and high-pressure phase transition in beryllium chalcogenides
1LPMD Institut de Physique Electronique et de Chimie, 1 Boulevard Dominique-François Arago CP 87811, 57078 Metz Cedex 3, France. LML Ecole Polytechnique de Lille, Université des Sciences et Technologie de Lille, Cité Scientifique, Avenue Paul Langevin, 59655 Villeneuve d'Ascq Cedex, France.
This study investigates beryllium chalcogenides (BeS, BeSe, BeTe), revealing their structural and electronic properties. Findings confirm a wide indirect band gap and significant ionic bonding in these materials.
Area of Science:
- Solid State Physics
- Materials Science
- Computational Chemistry
Background:
- Beryllium chalcogenides are compounds with potential applications.
- Understanding their structural and electronic properties is crucial for material design.
Purpose of the Study:
- To investigate the structural and electronic properties of BeS, BeSe, and BeTe.
- To determine the most stable crystal structure and phase transition behavior under pressure.
- To analyze bonding characteristics and electronic band structure.
Main Methods:
- Utilized the full-potential linear augmented-plane wave (FP-LAPW) and plane-wave pseudopotential (PPsPW) methods.
- Employed local-density approximation (LDA) and generalized-gradient approximation (GGA) for exchange-correlation effects.
- Calculated ground-state properties, elastic constants, and electronic band structure.
Main Results:
- Determined equilibrium volume, bulk modulus, and pressure derivative for BeS, BeSe, and BeTe.
- Identified the most stable crystal structure and predicted phase transitions under hydrostatic pressure.
- Observed a wide indirect band gap and analyzed charge transfer, indicating significant ionic localization.
Conclusions:
- The study provides a comprehensive understanding of beryllium chalcogenides' fundamental characteristics.
- Results align well with existing theoretical and experimental data.
- Beryllium chalcogenides exhibit properties suitable for various material applications.
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