Synthesis of the NaGa(S1−xSex)2 Solid Solution from Mechanically Activated Precursors

Author

• Louisiane Verger
• Julien Trébosc
• Santhoshkumar Sundaramoorthy
• Amitava Choudhury, Missouri University of Science and TechnologyFollow
• Olivier Hernandez
• Eric Furet
• Sébastien Chenu
• David Le Coq
• Laurent Calvez
• Olivier Lafon

Abstract

NaGaS₂ and NaGaSe₂ are two recently discovered compounds that crystallize in the same structure type. In this work, NaGa(S_1−xSe_x)₂ (x = 0.5, 0.75 and 1) are prepared using an alternative synthesis route, mechanochemistry followed by heat treatment. Na₂S, Na₂Se, Ga₂S₃ and Ga₂Se₃ are milled in stoichiometric proportions. Differential scanning calorimetry, X-ray diffraction and solid-state nuclear magnetic resonance (²³Na and ⁷¹Ga) show that the compounds after milling are composed of crystalline NaGa(S_1−xSe_x)₂ with an amorphous part. Annealing promotes the formation of crystalline NaGa(S_1−xSe_x)₂. A linear variation in the lattice parameters is observed, indicating that a solid solution is formed and that Se substitutes for S.

Recommended Citation

L. Verger and J. Trébosc and S. Sundaramoorthy and A. Choudhury and O. Hernandez and E. Furet and S. Chenu and D. Le Coq and L. Calvez and O. Lafon, "Synthesis of the NaGa(S1−xSex)2 Solid Solution from Mechanically Activated Precursors," Dalton Transactions, Royal Society of Chemistry, Jan 2026.

The definitive version is available at https://doi.org/10.1039/d6dt00232c

Department(s)

Chemistry

Comments

Ministère de l'Enseignement supérieur et de la Recherche, Grant None

International Standard Serial Number (ISSN)

1477-9234; 1477-9226

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026 Royal Society of Chemistry, All rights reserved.

Publication Date

01 Jan 2026