Journal
MATERIALS RESEARCH EXPRESS
Volume 1, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/1/2/025013
Keywords
Y2O3/Eu3+; high pressure; nanomaterials
Categories
Funding
- NSFC [51320105007, 11374120, 11104105, 11304380, 51102277]
- National Basic Research Program of China [2011CB808200]
- Cheung Kong Scholars Programme of China
- Tianjin Reasearch Program of Application Foundation and Advanced Technology [11JCYBJC26900, 13JCQNJC07100, 14JCQNJC03700]
- Scientific Research Foundation of Civil Aviation University of China [2011QD23X]
- Fundamental Research Funds for the Central Universities [3122013D008, ZXH2012D016]
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In situ angle-dispersive x-ray diffraction (ADXD) measurement by synchrotron beam under high pressure was performed and pressure-induced amorphization (PIA) and YO6 octahedral changes were investigated for both Y2O3/Eu3+ nanotubes and the bulk sample. The cubic structure of Y2O3/Eu3+ nanotubes transforms into an amorphous phase at a pressure of 21.9 GPa. Differential nano-effects in the radial and axial directions of nanotubes causes distinct compression behaviors for Y-O bonds. The variation in Y-O bonds of nanotubes exhibits disorder with pressure unlike that of bulk sample, which instead exhibits linear decreases. The YO6 octahedra of Y2O3/Eu3+ nanotubes are deformed in disorder under high pressure which abrogates the ordered long-distance octahedral arrangement, thus resulting in the amorphous transition.
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