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Optical properties upon vacuum ultraviolet excitation of sol-gel based , powders
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10.1063/1.2784998
/content/aip/journal/jap/102/7/10.1063/1.2784998
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/7/10.1063/1.2784998

Figures

Image of FIG. 1.
FIG. 1.

XRD patterns of undoped YAG powders sintered at (a) and (b) for 4 h, (c) , and (d) powders heated at for 4 h. Patterns are compared with the YAG ASTM file 33-0040 represented in dotted lines.

Image of FIG. 2.
FIG. 2.

(a) Temperature dependence of mean crystallite diameters for powders; (b) SEM micrograph recorded at magnification from annealed at for 4h.

Image of FIG. 3.
FIG. 3.

Room temperature excitation spectra of crystallized powders [(a) and (b) ] in VUV range monitored at 544 nm.

Image of FIG. 4.
FIG. 4.

Room temperature emission spectra of crystallized powders [(a) and (b) ] and (c) concentration dependence of emission intensity of transition upon 180 nm excitation.

Image of FIG. 5.
FIG. 5.

Room temperature excitation spectra of crystallized powders [(a) and (b) ] in VUV range monitored at 559.5 nm.

Image of FIG. 6.
FIG. 6.

Emission spectra of crystallized powders recorded upon 173 nm excitation at (a) room temperature and (b) 8.2 K (solid line) associated with corresponding fitted Gaussian curves (dot lines).

Image of FIG. 7.
FIG. 7.

Concentration dependence of emission intensity of transitions upon 173 nm excitation.

Image of FIG. 8.
FIG. 8.

(Color online) Luminescence decay traces of the emissions of in at (a) RT and (b), (c) 8.2 K upon 173 nm excitation associated with corresponding fitted double exponential curves (dashed lines).

Image of FIG. 9.
FIG. 9.

Room temperature excitation and emission spectra of crystallized (a) , (b) , and (c) , powders.

Tables

Generic image for table
Table I.

Parameters describing the Gaussian fit of the emissions of in recorded at 8.2 K.

Generic image for table
Table II.

Parameters describing shape of decay traces of the emissions of in fitting by a double exponential curve.

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/content/aip/journal/jap/102/7/10.1063/1.2784998
2007-10-12
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical properties upon vacuum ultraviolet excitation of sol-gel based Y3Al5O12:Tb3+, Ce3+ powders
http://aip.metastore.ingenta.com/content/aip/journal/jap/102/7/10.1063/1.2784998
10.1063/1.2784998
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