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Laser irradiation-induced α to δ phase transformation in Bi2O3 ceramics and nanowires
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10.1063/1.4747198
/content/aip/journal/apl/101/7/10.1063/1.4747198
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/7/10.1063/1.4747198
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Figures

Image of FIG. 1.
FIG. 1.

SEM images of α-Bi2O3 ceramics (a) and nanowires (b) prior to laser irradiation.

Image of FIG. 2.
FIG. 2.

Raman spectra, shifted for clarity, of Bi2O3 ceramics (a) and nanowires (b) as a function of laser power density. Spectra shown in (a) were recorded at a grain interior unless otherwise indicated.

Image of FIG. 3.
FIG. 3.

(a) Raman spectra of Bi2O3 ceramics after different irradiation times. (b) Temporal intensity evolution of the 625 cm−1 Raman peak in ceramic samples and nanowires. Dots correspond to experimental data while solid lines correspond to fits to the JMA model. Data correspond to power densities of 8 × 104 W/cm2 (ceramics) and 4 × 104 W/cm2 (nanowires).

Image of FIG. 4.
FIG. 4.

Raman spectra of ceramics and nanowires before and 2 h after laser irradiation. Nanowires were irradiated during 90 s and ceramics during 20 min by using a power density of 8 × 104 W/cm2 in both cases. Spectra were recorded by using a laser power density of 8 × 103 W/cm2.

Image of FIG. 5.
FIG. 5.

PL spectra of ceramics and nanowires before and 2 h after laser irradiation. Irradiation was carried out by using a power density of 8 × 104 W/cm2. Spectra shown in this figure were recorded by using a laser power density of 8 × 103 W/cm2.

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/content/aip/journal/apl/101/7/10.1063/1.4747198
2012-08-16
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Laser irradiation-induced α to δ phase transformation in Bi2O3 ceramics and nanowires
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/7/10.1063/1.4747198
10.1063/1.4747198
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