2024
DOI: 10.1021/acs.nanolett.4c01285
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Compressibility Studies of Copper Selenides Obtained by Cation Exchange Reaction Revealing the New CsCl Phase

Progna Banerjee,
Vitali B. Prakapenka,
Stella Chariton
et al.

Abstract: In this study, we conducted a high-pressure investigation of Cu 2−x Se nanostructures with pyramid-and plate-like morphologies, created through cation exchange from zinc-blende CdSe nanocrystals and wurtzite CdSe nanoplatelets respectively. Using a diamond anvil cell setup at the APS synchrotron, we observed the phase transitions in the Cu 2−x Se nanostructures up to 40 GPa, identifying a novel CsCl-type lattice with Pm3̅ m symmetry above 4 GPa. This CsCl-type structure, previously unreported in copper selenid… Show more

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