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High-pressure induced phase transitions of Y2O3 and Y2O3:Eu3+

Appl. Phys. Lett. 94, 061921 (2009); doi:10.1063/1.3082082

Published 13 February 2009

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Lin Wang,1 Yuexiao Pan,2 Yang Ding,1 Wenge Yang,3 Wendy L. Mao,4,5 Stanislav V. Sinogeikin,3 Yue Meng,3 Guoyin Shen,1,3 and Ho-kwang Mao1,3,6
1HPSynC, Carnegie Institution of Washington, 9700 South Cass Avenue, Argonne, Illinois 60439, USA
2College of Chemistry, South China University of Technology, Guangzhou 510641, People's Republic of China
3HPCAT, Carnegie Institution of Washington, 9700 South Cass Avenue, Argonne, Illinois 60439, USA
4Geological and Environmental Sciences, Stanford University, 450 Serra Mall, Stanford, California 94305-2115, USA
5Photon Science, Stanford Linear Accelerator Center, 2575 Sand Hill Road, Menlo Park, California 94025, USA
6Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, DC 20015, USA
We investigated high-pressure induced phase transitions in Y2O3 and Eu-doped Y2O3 (Y2O:Eu3+) using angular dispersive synchrotron x-ray diffraction, Raman spectroscopy, and photoluminescence (PL). With increasing pressure, we observed a series of phase transformations in Y2O3:Eu3+, which followed a structure sequence of cubic-->monoclinic-->hexagonal, while Y2O3 followed a sequence of cubic-->hexagonal. During decompression, both hexagonal structured Y2O3 and Y2O3:Eu3+ transformed into monoclinic phases which were quenchable back to ambient pressure. Raman and PL measurements shed additional light on the different phase transition behavior in these two samples. ©2009 American Institute of Physics
History: Received 13 October 2008; accepted 21 January 2009; published 13 February 2009
Permalink: http://link.aip.org/link/?APPLAB/94/061921/1
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KEYWORDS and PACS

Keywords
PACS
  • 62.50.-p
    High-pressure effects in solids and liquids
  • 64.70.K-
    Solid-solid transitions
  • 78.30.Hv
    Infrared and Raman spectra in nonmetallic inorganics
  • 78.55.Hx
    Photoluminescence in solid inorganic materials
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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