RT Journal Article
T1 Laser irradiation-induced alpha to delta phase transformation in Bi_2O_3 ceramics and nanowires
A1 Vila, Mercedes
A1 Díaz-Guerra Viejo, Carlos
A1 Piqueras de Noriega, Javier
AB The α-Bi_2O_3 to σ- Bi_2O_3  phase transformation has been locally induced by laser irradiation in ceramic samples and single-crystal nanowires of this oxide. The threshold power densities necessary to induce this transformation, as well as the corresponding transformation kinetics and its temporal stability, have been investigated in both kinds of samples by micro-Raman spectroscopy. The appearance of the delta phase was also monitored by spatially resolved photoluminescence spectroscopy. An emission band peaked near 1.67 eV, not observed in α-Bi_2O_3, is tentatively attributed to to σ- Bi_2O_3  near band gap transitions.
PB Amer Inst Physics
SN 0003-6951
YR 2012
FD 2012-08-13
LK https://hdl.handle.net/20.500.14352/44214
UL https://hdl.handle.net/20.500.14352/44214
LA eng
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NO © 2012 American Institute of Physics.This work was supported by MICNN through projects MAT2009-07882 and CSD2009-0013.
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