Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/121165
Title: Pressure-induced structural transformations of the Zintl phase sodium silicide
Authors: Quesada Cabrera, Raúl 
Salamat, Ashkan
Barkalov, Oleg I.
Leynaud, Olivier
Hutchins, Peter
Daisenberger, Dominik
Machon, Denis
Sella, Andrea
Lewis, Dewi W.
McMillan, Paul F.
UNESCO Clasification: 220406 Fenómenos de alta presión
230117 Espectroscopia Ramn
221104 Cristalografía
Keywords: Sodium silicide
Zintl phase
High-pressure transition
Synchrotron X-ray diffraction
Pressure-induced amorphisation, et al
Issue Date: 2009
Journal: Journal of Solid State Chemistry 
Abstract: The high-pressure behaviour of NaSi has been studied using Raman spectroscopy and angle-dispersive synchrotron X-ray diffraction to observe the onset of structural phase transformations and potential oligomerisation into anionic Si nanoclusters with extended dimensionality. Our studies reveal a first structural transformation occurring at 8-10 GPa, followed by irreversible amorphisation above 15 GPa, suggesting the formation of Si-Si bonds with oxidation of the Si- species and reduction of Na+ to metallic sodium. We have combined our experimental studies with DFT calculations to assist in the analysis of the structural behaviour of NaSi at high pressure. © 2009 Elsevier Inc. All rights reserved.
URI: http://hdl.handle.net/10553/121165
ISSN: 0022-4596
DOI: 10.1016/j.jssc.2009.06.037
Source: Journal of Solid State Chemistry [ISSN 0022-4596], v. 182(9), p. 2535-2542
Appears in Collections:Artículos
Adobe PDF (647,98 kB)
Show full item record

SCOPUSTM   
Citations

13
checked on Mar 30, 2025

WEB OF SCIENCETM
Citations

10
checked on Mar 30, 2025

Page view(s)

20
checked on Mar 16, 2024

Download(s)

9
checked on Mar 16, 2024

Google ScholarTM

Check

Altmetric


Share



Export metadata



Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.