The f-f emission of Pr3+ ion as an optical probe for the structural properties of YAG nanoceramics.
Transparent Pr-doped YAG nanoceramics composed of grains with an average size of about 42 nm, were fabricated with the Low Temperature High Pressure (LTHP) sintering technique using the corresponding nanopowders as the starting materials. The structure of the nanoceramics was analyzed by X-ray diffraction (XRD). The effect of the sintering conditions on the structural properties is discussed on the basis of the changes of the spectroscopic properties of Pr3+ ions. In particular, the intensities and decays of the emission transitions originating from the (3)P0 and (1)D2 levels are investigated and correlated with structural properties of the material, such as microstrains produced by the high-pressure process.
Hreniak
Dariusz
D
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, PL-50-422 Wroclaw, Poland.
Bettinelli
Marco
M
Speghini
Adolfo
A
Łukowiak
Anna
A
Głuchowski
Paweł
P
Wiglusz
Rafał
R