Results 51 to 60 of about 276 (171)

Modified theory of f-f transition intensities and crystal field for systems with anomalously strong configuration interaction [PDF]

, 2008
A new theory explaining the intensity of f-f transitions and the crystal field using an approximation of a strong configuration interaction is proposed.
Dunina, E. V., Fomicheva, L. A., Kornienko, A. A.   +2 more
core   +1 more source

Thermoluminescence Properties of Elpasolite Scintillation Single Crystal

Journal of the Korea Academia-Industrial cooperation Society, 2012
Abstract In this paper, we determined the scintillation and thermoluminescence properties of Cs 2 NaCeBr 6 elpasolitescintillation crystal. The emission spectrum of Cs 2 NaCeBr 6 is located in the range of 300 ~ 450 nm, peaking at 377nm and 400 nm. And, the fluorescence decay time of the crystal is composed two components.
openaire   +2 more sources

Structural and Vibrational Properties of Crystals with a Rare-Earth Sublattice: <i>Ab Initio</i> Calculations

, 2018
We investigated the crystal structure, vibrational and elastic properties of crystals with a rare-earth sublattice related to different structural types at ab initio level of modeling: elpasolite Cs2NaRF6 −> pyrochlore R2Ti2O7 −> ferroborate RFe3 ...
Vladislav P. Petrov, Vladimir A. Chernyshev, Anatoly E. Nikiforov   +2 more
core   +1 more source

Machine learning of material properties: Predictive and interpretable multilinear models. [PDF]

Sci Adv, 2022
Allen AEA, Tkatchenko A.
europepmc   +1 more source

Computer Modeling of the Optical Properties of Transition-Metal Ions in Solids

, 1994
Computational methods for modeling the optical properties of substitutional transition-metal impurities in insulating solids, potentially applicable to some scintillator and phosphor materials, are reviewed.
Ralph H. Bartram
core   +1 more source

Estudio de la relación entre la temperatura y la simetría de campo eléctrico cristalino en elpasolitas del tipo Cs2NaR3+Cl6 contaminadas intencionalmente con Gd3+, por medio de la espectroscopía de resonancia paramagnética electrónica

, 1998
Las elpasolitas, sustancias cuya fórmula estructural es A2+1B+1M3+X6-1, han sido estudiadas en los últimos años. Una de las propiedades que más interés ha despertado es la de "presentar cambios de fase a temperatura menor que la temperatura ambiente ...
Roberto José Raúl Gleason Villagrán
core  

Chemical Mapping of Excitons in Halide Double Perovskites. [PDF]

Nano Lett, 2023
Biega RI, Chen Y, Filip MR, Leppert L.
europepmc   +1 more source

Variable Temperature Behaviour of the Hybrid Double Perovskite MA₂KBiCl₆. [PDF]

Molecules, 2022
Wei F, Wu Y, Sun S, Deng Z, Chew LT, Cheng B, Tan CC, White TJ, Cheetham AK.   +8 more
europepmc   +1 more source

Vibrational analysis of the elpasolites Cs{sub 2}NaAlF{sub 6} and Cs{sub 2}NaGaF{sub 6} doped with Cr{sup 3+} ions by fluorescence spectroscopy.

, 1999
Interest in 3d transition metal impurities in ionic crystals has increased due to their important role in the laser activity of these materials. Moreover, recent advances in tunable solid-state lasers and high-power semiconductor laser diode arrays have ...
Sosman, L. P., da Fonseca, R. J. M., Tavares, A. D., Jr., Bordallo, H. N.   +3 more
core  

Rb₄Ag₂BiBr₉: A Lead-Free Visible Light Absorbing Halide Semiconductor with Improved Stability

, 2019
Replacement of the toxic heavy element lead in metal halide perovskites has been attracting a great interest because the high toxicity and poor air stability are two of the major barriers for their widespread utilization.
Mao-Hua Du (2420176), Aymen Yangui (4918591), Ian R. Sellers (4566994), Bayrammurad Saparov (1363917), Manila Sharma (6341294), Vincent R. Whiteside (4566991), Shiyou Chen (1476559), Dan Han (1927951)   +7 more
core   +1 more source