Pregled bibliografske jedinice broj: 225595
Non-vibrational features in NIR FT-Raman spectra of lanthanide sesquioxides
Non-vibrational features in NIR FT-Raman spectra of lanthanide sesquioxides // MATH/CHEM/COMP'05 : Book of Abstracts
Dubrovnik, Hrvatska, 2005. str. - (pozvano predavanje, nije recenziran, sažetak, znanstveni)
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Naslov
Non-vibrational features in NIR FT-Raman spectra of
lanthanide sesquioxides
Autori
Meić, Zlatko ; Biljan, Tomislav
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
MATH/CHEM/COMP'05 : Book of Abstracts
/ - , 2005
Skup
MATH/CHEM/COMP'05
Mjesto i datum
Dubrovnik, Hrvatska, 20.06.2005. - 25.06.2005
Vrsta sudjelovanja
Pozvano predavanje
Vrsta recenzije
Nije recenziran
Ključne riječi
NIR FT-Raman spectra ; lanthanides
Sažetak
The majority of lanthanide sesquioxides and yttrium sesquioxide show additional bands in FT- Raman spectra1 (after the excitation with the 1064 nm line of a Nd:YAG laser) that cannot be explained by vibrational origin. Additional bands in the FT-Raman spectra of heavy lanthanide sesquioxides appear in the Stokes region of the spectrum, but there are also some very strong unexpected bands in the anti-Stokes region of some light lanthanide sesquioxides and in yttrium sesquioxide, notably around 800 and 1100 cm-1. The non-vibrational bands observed in FT-Raman spectra of lanthanide sesquioxides and yttrium sesquioxide are not seen in Raman spectra excited in the visible region. A possible origin of these additional bands is in luminescence of lanthanide ions. Strong anti-Stokes bands observed in FT- Raman spectra of Y2O3, La2O3, Gd2O3 and Lu2O3 are explained by NIR luminescence of Yb3+ impurities present in sesquioxides after the excitation with the 1064 nm line of a Nd:YAG laser.
Izvorni jezik
Hrvatski
Znanstvena područja
Kemija
