Phys. Rev. B 67, 092202 (2003) [4 pages]Anelastic compression of nanometer-sized silica particles under high pressure: A high-energy x-ray diffraction measurementReceived 5 September 2002; revised 9 December 2002; published 13 March 2003 We compressed nanometer-sized silica particles, fumed silica, using a cubic-anvil-type apparatus up to pressures of 8 GPa at room temperature. The high-energy (61.7 keV) x-ray diffraction measurements of the recovered samples were carried out to determine the x-ray structure factor and in the real space correlation functions. These results indicate that anelastic compression occurs in silica nanoparticles in the pressure range from 4 to 8 GPa, which is well below the pressure regime of the anelastic compression (∼10 to ∼20 GPa) observed for bulk amorphous silica. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.67.092202
DOI:
10.1103/PhysRevB.67.092202
PACS:
61.43.-j, 61.10.-i
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