Search results for "Samarium"
showing 10 items of 72 documents
Luminescence and vacuum ultraviolet excitation spectroscopy of samarium doped SrB4O7
2020
Abstract Sm2+ and Sm3+ co-doped SrB4O7 could be utilized in several high-level optical devices and fundamental knowledge about the optical behavior of these materials benefits the development of luminescent applications. Herein, we report luminescence and its vacuum ultraviolet (VUV) excitation spectra in samarium doped SrB4O7. Both, Sm2+ and Sm3+ luminescence centers have been examined and distinguished in the emission and the excitation spectra investigated under synchrotron radiation. The contribution of either Sm2+ or Sm3+ emission lines into the emission spectra heavily depended on the excitation energy, and strong f-f transitions of both Sm2+ and Sm3+ were detected. At 10 K, a broad i…
New synthetic strategies for the enhancement of the ionic conductivity in Ce0.8Sm0.2O2-x
2013
Introduction Samarium-doped ceria has been widely investigat-ed for electrochemistry applications as full density elec-trolyte for intermediate temperature solid oxide fuel cells (IT-SOFC), between 500°C and 800°C [1]. One of the main challenges for the ceria-based electrolytes is to decrease the resistivity at the grain boundary zone, especially in this low temperature range. Microstructure and morphology of the powder play a fundamental role on the densification behaviour and grain boundary properties, thus affecting the overall conductivity of electrolytes [2]. In this light, solution combustion syn-thesis (SCS) represents a flexible method to produce ultra fine powders with suitable mic…
Thermal and spectroscopic investigation of europium and samarium sulphates hydrates by TG-FTIR and ICP-MS techniques.
2005
The investigation of europium(III) sulphate hydrate and samarium(III) sulphate hydrate was performed by thermal analysis (TG-DTG) and simultaneous infrared evolved gas analysis-Fourier transformed infrared (EGA-FTIR) spectroscopy. The TG, DTG and DTA curves were recorded at the 25-1400 degrees C in the dynamic air atmosphere by TG/DTA analyser. The infrared evolved gas analysis was obtained on the FTIR spectrometer. Eu(2)(SO(4))(3).nH(2)O (n=3.97) and Sm(2)(SO(4))(3).nH(2)O (n=8.11) were analysed, the dehydration and decomposition steps were investigated and the water content was calculated. The formation of different oxysulphates was studied. The trace rare earth elements in Eu and Sm sulp…
The gas-phase chemiionization reaction between samarium and oxygen atoms: A theoretical study
2004
The Sm + O chemiionization reaction has been investigated theoretically using a method that allows for correlation and relativistic effects. Potential energy curves have been calculated for several electronic states of SmO and SmO+. Comparison with available spectroscopic and thermodynamic values for these species is reported and a mechanism for the chemiionization reaction Sm + O is proposed. The importance of spin–orbit coupling in the excited states of SmO, in allowing this chemiionization reaction to take place, has been revealed by these calculations. This paper shows the metal-plus-oxidant chemiionization reaction.
CCDC 801160: Experimental Crystal Structure Determination
2011
Related Article: A.Jana, S.Majumder, L.Carrella, M.Nayak, T.Weyhermueller, S.Dutta, D.Schollmeyer, E.Rentschler, R.Koner, S.Mohanta|2010|Inorg.Chem.|49|9012|doi:10.1021/ic101445n
CCDC 973930: Experimental Crystal Structure Determination
2014
Related Article: Partha Pratim Chakrabarty, Sandip Saha, Kamalika Sen, Atish Dipankar Jana, Debarati Dey, Dieter Schollmeyer, Santiago García-Granda|2014|RSC Advances|4|40794|doi:10.1039/C4RA04531A
CCDC 801154: Experimental Crystal Structure Determination
2011
Related Article: A.Jana, S.Majumder, L.Carrella, M.Nayak, T.Weyhermueller, S.Dutta, D.Schollmeyer, E.Rentschler, R.Koner, S.Mohanta|2010|Inorg.Chem.|49|9012|doi:10.1021/ic101445n
CCDC 1833437: Experimental Crystal Structure Determination
2019
Related Article: Antti Tiihonen, Manu Lahtinen|2019|CrystEngComm|21|2286|doi:10.1039/C8CE01015C
CCDC 696702: Experimental Crystal Structure Determination
2009
Related Article: D.Visinescu, L.M.Toma, O.Fabelo, C.Ruiz-Perez, F.Lloret, M.Julve|2009|Polyhedron|28|851|doi:10.1016/j.poly.2008.12.032
CCDC 696695: Experimental Crystal Structure Determination
2009
Related Article: D.Visinescu, L.M.Toma, O.Fabelo, C.Ruiz-Perez, F.Lloret, M.Julve|2009|Polyhedron|28|851|doi:10.1016/j.poly.2008.12.032