Results 131 to 140 of about 260 (165)

Two-photon absorption spectrum of gadolinium elpasolite

Chemical Physics Letters, 1991
Abstract Observations on parity-allowed direct two-photon transitions within the 4f 7 configuration of Gd 3+ ion in a centrosymmetric Cl − environment are presented. The observed spectrum allows identification of the 00 bands and determination of crystal field splittings.
Liudmila Kundu, Asok K. Banerjee, Mihir Chowdhury   +2 more
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Raman spectra and phase transitions in Rb2KInF6 elpasolite

Crystallography Reports, 2011
The Raman spectra of Rb2KInF6 elpasolite crystal have been studied in a wide temperature range, including two phase transitions: from the cubic phase to the tetragonal phase and then to the monoclinic phase. Several anomalies of internal modes of InF6 octahedra and low-frequency lattice vibrations, which are related to the structural changes at the ...
A. S. Krylov, S. N. Krylova, A. N. Vtyurin, N. V. Surovtsev, S. V. Adishev, V. N. Voronov, A. S. Oreshonkov   +6 more
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Luminescence of the uranyl-ion-doped elpasolite lattice

Journal of Physics: Condensed Matter, 2000
Distinct species U(III), U(IV), U(V) and U(VI) have been identified when U(VI) or U(IV) species are doped into the cubic elpasolite lattice. The band intensities, and derived vibrational frequencies, in the luminescence and absorption spectra of the uranyl ion situated in this lattice are compared with those of Cs2UO2Cl4.
Peter A Tanner, Chris S K Mak, Zhi-Wu Pei, Yu-Long Liu, Lin Jun   +4 more
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Low-temperature specific heat of the Rb2KScF6 elpasolite

Physics of the Solid State, 2003
The specific heat of single-crystal Rb2KScF6 is measured using ac calorimetry in the range 4–280 K. The results are discussed in the context of a group-theoretical analysis of possible distortions of the elpasolite structure and of experimental data obtained earlier with an adiabatic calorimeter in a narrower temperature region.
I. N. Flerov, R. Burriel, M. V. Gorev, P. Isla, V. N. Voronov   +4 more
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Luminescence of the new elpasolite Rb2KGaF6 doped with Cr3+

Journal of Luminescence, 1991
Abstract Photoluminescence, lifetime, optical absorption and EPR measurements on Rb 2 KGaF 6 :Cr 3+ have been carried out in the 10–300 K temperature range. The emission spectrum at 10 K shows a very rich vibrational structure which can be mainly explained through the vibrational modes of the CrF 6 3− complex.
C.Marco de Lucas, F. Rodríguez, J.M. Dance, M. Moreno, A. Tressaud   +4 more
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Electronic structure engineering of elpasolites: Case of Cs2AgYCl6

Journal of Luminescence, 2013
Abstract Electronic structure engineering of elpasolite-based scintillators is explored for improving light yield and scintillation response. First-principles calculations of electronic structure, polarons, and Ce activator in Cs 2 AgYCl 6 show that the electronegativity of constituent elements of a quaternary elpasolite compound can be manipulated ...
Mao-Hua Du, Koushik Biswas
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Elpasolite-type superstructures in inverse perovskite nitrides

Progress in Solid State Chemistry
Progress in solid state chemistry 74, 100444 (2024).
Link, Lukas, Wang, Haichen, Hansen, Thomas C., Baran, Volodymyr, Niewa, Rainer   +4 more
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Distinction between alloyed Perovskite and elpasolite nanocrystals

2023
In the previous decade, a lot of research has been done in the area of halide perovskite materials which has led them to be used in all different typed of photonic applications. The low dimension crystals of this structure have also shown a lot of promise in quantum photonic devices.
Mishra, Pritish, Zhang, Mengyuan, Chen, Andy Paul, Sum, Tze Chien, Duchamp, Martial, Lam, Yeng Ming, Hippalgaonkar, Kedar   +6 more
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Luminescence properties of U3+ doped chloride elpasolite

Journal of Molecular Structure, 1994
Abstract Absorption and luminescence spectra of U3+ in Cs2NaYCl6 single crystals are reported. An efficient luminescence is observed in the visible (centered at about 12282 cm−1 and 12903 cm−1) and near infrared (at 6321 cm−1 and 6940 cm−1) regions.
P.J. Dereń, W. Stręk, J. Drożdżyński   +2 more
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Development of Elpasolite and Monoclinic Thermal Neutron Scintillators

IEEE Nuclear Science Symposium Conference Record, 2005, 2006
Scintillation properties of Ce doped Cs/sub 2/LiYBr/sub 6/, Rb/sub 2/LiScBr/sub 6/, Rb/sub 2/LiYBr/sub 6/, Rb/sub 2/LiLaBr/sub 6/, Rb/sub 2/LiYI/sub 6/ elpasolite, and Li/sub 3/YBr/sub 6/ monoclinic inorganic thermal-neutron scintillator crystals were investigated. Light yields and decay times were studied.
C.W.E. van Eijk, J.T.M. de Haas, P. Dorenbos, K.W. Kraemer, H.U. Guedel   +4 more
openaire   +1 more source