Results 11 to 20 of about 2,062 (193)

Valencies of the lanthanides [PDF]

open access: yes, 2017
The valencies of the lanthanides vary more than was once thought. In addition to valencies associated with a half-full shell, there are valencies associated with a quarter- and three-quarter-full shell.
Johnson, David A., Nelson, Peter G.
core   +1 more source

Pushing the Boundary of Covalency in Lanthanoid-Tellurium Bonds: Insights from the Synthesis, Molecular and Electronic Structures of Low-Coordinate, Monomeric Europium(II) and Ytterbium(II) Tellurolates [PDF]

open access: yes, 2023
Owing to the strict hard/soft dichotomy between the lanthanoids and tellurium atoms, and the strong affinity of lanthanoid ions for high coordination numbers, low-coordinate, monomeric lanthanoid tellurolate complexes have remained elusive as compared to
Butcher, Ray J.   +7 more
core   +1 more source

Photochemical upconversion present status and prospects for its application to solar energy conversion [PDF]

open access: yes, 2015
All photovoltaic solar cells transmit photons with energies below the absorption threshold bandgap of the absorber material, which are therefore usually lost for the purpose of solar energy conversion.
Schmidt, T., Schulze, T.F.
core   +2 more sources

Use of rare earth oxides as tracers to identify sediment source areas for agricultural hillslopes [PDF]

open access: yes, 2010
Understanding sediment sources is essential to enable more effective targeting of in-field mitigation approaches to reduce diffuse pollution from agricultural land.
Deasy, C., Quinton, John
core   +1 more source

Responsible sourcing of critical metals [PDF]

open access: yes, 2017
This is the author accepted manuscript. The final version is available from Mineralogical Society of America via the DOI in this recordMost critical raw materials, such as the rare earth elements (REE), are starting products in long manufacturing supply ...
Alain Rollat   +15 more
core   +1 more source

Current rectification in a single molecule diode: the role of electrode coupling [PDF]

open access: yes, 2015
We demonstrate large rectification ratios (> 100) in single-molecule junctions based on a metal-oxide cluster (polyoxometalate), using a scanning tunneling microscope (STM) both at ambient conditions and at low temperature. These rectification ratios are
Agrait, Nicolas   +5 more
core   +1 more source

Crystal field analysis of Dy and Tm implanted silicon for photonic and quantum technologies [PDF]

open access: yes, 2014
We report the lattice site and symmetry of optically active Dy3+ and Tm3+ implanted Si. Local symmetry was determined by fitting crystal field parameters (CFPs), corresponding to various common symmetries, to the ground state splitting determined by ...
Carey, JD   +4 more
core   +2 more sources

Graph Networks as a Universal Machine Learning Framework for Molecules and Crystals [PDF]

open access: yes, 2019
Graph networks are a new machine learning (ML) paradigm that supports both relational reasoning and combinatorial generalization. Here, we develop universal MatErials Graph Network (MEGNet) models for accurate property prediction in both molecules and ...
Chen, Chi   +4 more
core   +4 more sources

Proximity to Fermi-surface topological change in superconducting LaO0.54F0.46BiS2 [PDF]

open access: yes, 2014
The electronic structure of nearly optimally-doped novel superconductor LaO$_{1-x}$F$_x$BiS$_2$ (${\it x}$ = 0.46) was investigated using angle-resolved photoemission spectroscopy (ARPES).
Kumigashira, H.   +18 more
core   +2 more sources

Muon spin spectroscopy: magnetism, soft matter and the bridge between the two [PDF]

open access: yes, 2014
LS would like to acknowledge financial support from the Swiss National Science Foundation, grant numbers PBFRP2-138632 and PBFRP2-142820. AD would like to acknowledge financial support from the UK Engineering and Physical Sciences Research Council, grant
Drew, AJ, Nuccio, L, Schulz, L
core   +1 more source

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